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Conserved domains on  [gi|1814354|gb|AAC31783|]
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citrate synthase, partial [Bartonella sp. pm7772nc]

Protein Classification

type II citrate synthase( domain architecture ID 1000108)

type II citrate synthase catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA) in the first step of the citric acid cycle (TCA or Krebs cycle)

CATH:  1.10.580.10|2.20.28.60|1.10.230.10
EC:  2.3.3.16
Gene Ontology:  GO:0006099|GO:0004108
PubMed:  3013232
SCOP:  3001050

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
gltA super family cl29033
citrate synthase;
1-112 3.26e-88

citrate synthase;


The actual alignment was detected with superfamily member PRK05614:

Pssm-ID: 180164  Cd Length: 419  Bit Score: 261.35  E-value: 3.26e-88
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIqDDPLLDIAIELEKI 80
Cdd:PRK05614 270 ANEAVLKMLEEIGSVDNIPEFIARAKDKNDGFRLMGFGHRVYKNYDPRAKIMRETCHEVLKELGL-NDPLLEVAMELEEI 348

                         90       100       110
                 ....*....|....*....|....*....|..
gi 1814354    81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:PRK05614 349 ALNDEYFIERKLYPNVDFYSGIILKALGIPTS 380
 
Name Accession Description Interval E-value
gltA PRK05614
citrate synthase;
1-112 3.26e-88

citrate synthase;


Pssm-ID: 180164  Cd Length: 419  Bit Score: 261.35  E-value: 3.26e-88
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIqDDPLLDIAIELEKI 80
Cdd:PRK05614 270 ANEAVLKMLEEIGSVDNIPEFIARAKDKNDGFRLMGFGHRVYKNYDPRAKIMRETCHEVLKELGL-NDPLLEVAMELEEI 348

                         90       100       110
                 ....*....|....*....|....*....|..
gi 1814354    81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:PRK05614 349 ALNDEYFIERKLYPNVDFYSGIILKALGIPTS 380
EcCS_like cd06114
Escherichia coli (Ec) citrate synthase (CS) GltA_like. CS catalyzes the condensation of acetyl ...
 1-112 1.38e-80

Escherichia coli (Ec) citrate synthase (CS) GltA_like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). Some type II CSs including EcCS are strongly and specifically inhibited by NADH through an allosteric mechanism. Included in this group is an NADH-insensitive type II Acetobacter acetii CS which has retained many of the residues used by EcCS for NADH binding.


Pssm-ID: 99867  Cd Length: 400  Bit Score: 241.33  E-value: 1.38e-80
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIqDDPLLDIAIELEKI 80
Cdd:cd06114 252 ANEAVLEMLEEIGSVGNVDKYIAKAKDKNDPFRLMGFGHRVYKNYDPRAKILKKTCDEVLAELGK-DDPLLEIAMELEEI 330

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06114 331 ALKDDYFIERKLYPNVDFYSGIILRALGIPTE 362
cit_synth_I TIGR01798
citrate synthase I (hexameric type); This model describes one of several distinct but closely ...
 1-112 7.04e-76

citrate synthase I (hexameric type); This model describes one of several distinct but closely homologous classes of citrate synthase, the protein that brings carbon (from acetyl-CoA) into the TCA cycle. This form, class I, is known to be hexameric and allosterically inhibited by NADH in Escherichia coli, Acinetobacter anitratum, Azotobacter vinelandii, Pseudomonas aeruginosa, etc. In most species with a class I citrate synthase, a dimeric class II isozyme is found. The class II enzyme may act primarily on propionyl-CoA to make 2-methylcitrate or be bifunctional, may be found among propionate utilization enzymes, and may be constitutive or induced by propionate. Some members of this model group as class I enzymes, and may be hexameric, but have shown regulatory properties more like class II enzymes. [Energy metabolism, TCA cycle]


Pssm-ID: 273811  Cd Length: 412  Bit Score: 229.67  E-value: 7.04e-76
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354      1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIQDDPLLDIAIELEKI 80
Cdd:TIGR01798 257 ANEAALKMLEEIGSVKNIDEFIKKVKDKNDPFRLMGFGHRVYKNYDPRAKVMRETCHEVLKELGLHDDPLFKLAMELEKI 336

                          90       100       110
                  ....*....|....*....|....*....|..
gi 1814354     81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:TIGR01798 337 ALNDPYFIERKLYPNVDFYSGIILKAMGIPTS 368
GltA COG0372
Citrate synthase [Energy production and conversion]; Citrate synthase is part of the Pathway ...
 1-112 1.14e-66

Citrate synthase [Energy production and conversion]; Citrate synthase is part of the Pathway/BioSystem: TCA cycle


Pssm-ID: 440141 [Multi-domain]  Cd Length: 387  Bit Score: 205.33  E-value: 1.14e-66
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKndPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:COG0372 232 ANEAVLEMLEEIGSPDNVEEYIRKALDK--KERIMGFGHRVYKNYDPRAKILKEAAEELLEELG--DDPLLEIAEELEEV 307

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:COG0372 308 ALEDEYFIEKKLYPNVDFYSGIVYHALGIPTD 339
Citrate_synt pfam00285
Citrate synthase, C-terminal domain; This is the long, C-terminal part of the enzyme.
 1-112 1.77e-58

Citrate synthase, C-terminal domain; This is the long, C-terminal part of the enzyme.


Pssm-ID: 459747 [Multi-domain]  Cd Length: 357  Bit Score: 183.48  E-value: 1.77e-58
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354      1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:pfam00285 218 ANEAVLEMLEEIGSPDEVEEYIRKVLNKGK-ERIMGFGHRVYKNYDPRAKILKEFAEELAEEGG--DDPLLELAEELEEV 294

                          90       100       110
                  ....*....|....*....|....*....|..
gi 1814354     81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:pfam00285 295 APEDLYFVEKNLYPNVDFYSGVLYHALGIPTD 326
Cit_synThplmales NF041157
citrate synthase;
1-110 1.53e-29

citrate synthase;


Pssm-ID: 469069  Cd Length: 376  Bit Score: 108.56  E-value: 1.53e-29
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARaKDKNDPFRLMGFGHRVYKNYDPRAKIMqKTCHEVLKELNIQDDpLLDIAIELEKI 80
Cdd:NF041157 220 AAEAAFKQFLEIGSPDNVEKWFNE-NIINGKKRLMGFGHRVYKTYDPRAKIF-KEYAEKLASTNEAKK-YLEIAEKLEEL 296

                         90       100       110
                 ....*....|....*....|....*....|
gi 1814354    81 ALndEYFVEKKLYPNVDFYSGITLKALGFP 110
Cdd:NF041157 297 GI--KHFGSKGIYPNTDFYSGIVFYSLGFP 324
 
Name Accession Description Interval E-value
gltA PRK05614
citrate synthase;
1-112 3.26e-88

citrate synthase;


Pssm-ID: 180164  Cd Length: 419  Bit Score: 261.35  E-value: 3.26e-88
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIqDDPLLDIAIELEKI 80
Cdd:PRK05614 270 ANEAVLKMLEEIGSVDNIPEFIARAKDKNDGFRLMGFGHRVYKNYDPRAKIMRETCHEVLKELGL-NDPLLEVAMELEEI 348

                         90       100       110
                 ....*....|....*....|....*....|..
gi 1814354    81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:PRK05614 349 ALNDEYFIERKLYPNVDFYSGIILKALGIPTS 380
EcCS_like cd06114
Escherichia coli (Ec) citrate synthase (CS) GltA_like. CS catalyzes the condensation of acetyl ...
 1-112 1.38e-80

Escherichia coli (Ec) citrate synthase (CS) GltA_like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). Some type II CSs including EcCS are strongly and specifically inhibited by NADH through an allosteric mechanism. Included in this group is an NADH-insensitive type II Acetobacter acetii CS which has retained many of the residues used by EcCS for NADH binding.


Pssm-ID: 99867  Cd Length: 400  Bit Score: 241.33  E-value: 1.38e-80
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIqDDPLLDIAIELEKI 80
Cdd:cd06114 252 ANEAVLEMLEEIGSVGNVDKYIAKAKDKNDPFRLMGFGHRVYKNYDPRAKILKKTCDEVLAELGK-DDPLLEIAMELEEI 330

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06114 331 ALKDDYFIERKLYPNVDFYSGIILRALGIPTE 362
cit_synth_I TIGR01798
citrate synthase I (hexameric type); This model describes one of several distinct but closely ...
 1-112 7.04e-76

citrate synthase I (hexameric type); This model describes one of several distinct but closely homologous classes of citrate synthase, the protein that brings carbon (from acetyl-CoA) into the TCA cycle. This form, class I, is known to be hexameric and allosterically inhibited by NADH in Escherichia coli, Acinetobacter anitratum, Azotobacter vinelandii, Pseudomonas aeruginosa, etc. In most species with a class I citrate synthase, a dimeric class II isozyme is found. The class II enzyme may act primarily on propionyl-CoA to make 2-methylcitrate or be bifunctional, may be found among propionate utilization enzymes, and may be constitutive or induced by propionate. Some members of this model group as class I enzymes, and may be hexameric, but have shown regulatory properties more like class II enzymes. [Energy metabolism, TCA cycle]


Pssm-ID: 273811  Cd Length: 412  Bit Score: 229.67  E-value: 7.04e-76
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354      1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIQDDPLLDIAIELEKI 80
Cdd:TIGR01798 257 ANEAALKMLEEIGSVKNIDEFIKKVKDKNDPFRLMGFGHRVYKNYDPRAKVMRETCHEVLKELGLHDDPLFKLAMELEKI 336

                          90       100       110
                  ....*....|....*....|....*....|..
gi 1814354     81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:TIGR01798 337 ALNDPYFIERKLYPNVDFYSGIILKAMGIPTS 368
GltA COG0372
Citrate synthase [Energy production and conversion]; Citrate synthase is part of the Pathway ...
 1-112 1.14e-66

Citrate synthase [Energy production and conversion]; Citrate synthase is part of the Pathway/BioSystem: TCA cycle


Pssm-ID: 440141 [Multi-domain]  Cd Length: 387  Bit Score: 205.33  E-value: 1.14e-66
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKndPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:COG0372 232 ANEAVLEMLEEIGSPDNVEEYIRKALDK--KERIMGFGHRVYKNYDPRAKILKEAAEELLEELG--DDPLLEIAEELEEV 307

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:COG0372 308 ALEDEYFIEKKLYPNVDFYSGIVYHALGIPTD 339
EcCS_AthCS-per_like cd06107
Escherichia coli (Ec) citrate synthase (CS) gltA and Arabidopsis thaliana (Ath) peroxisomal ...
 1-112 1.43e-63

Escherichia coli (Ec) citrate synthase (CS) gltA and Arabidopsis thaliana (Ath) peroxisomal (Per) CS_like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). Some type II CSs, including EcCS, are strongly and specifically inhibited by NADH through an allosteric mechanism. Included in this group is an NADH-insensitive type II Acetobacter acetii CS which has retained many of the residues used by EcCS for NADH binding. C. aurantiacus is a gram-negative thermophilic green gliding bacterium; its CS belonging to this group may be a type I CS. It is not inhibited by NADH or 2-oxoglutarate and is inhibited by ATP. Both gram-positive and gram-negative bacteria are found in this group. This group also contains three Arabidopsis peroxisomal CS proteins, CYS-1, -2, and -3 which participate in the glyoxylate cycle. AthCYS1, in addition to a peroxisomal targeting sequence, has a predicted secretory signal peptide; it may be targeted to both the secretory pathway and the peroxisomes and perhaps is located in the extracellular matrix. AthCSY1 is expressed only in siliques and specifically in developing seeds. AthCSY2 and 3 are active during seed germination and seedling development and are thought to participate in the beta-oxidation of fatty acids.


Pssm-ID: 99860  Cd Length: 382  Bit Score: 197.27  E-value: 1.43e-63
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNdpFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELniQDDPLLDIAIELEKI 80
Cdd:cd06107 237 ANEAALKMLREIGTPENVPAFIERVKNGK--RRLMGFGHRVYKNYDPRAKVIREILHEVLTEV--EKDPLLKVAMELERI 312

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06107 313 ALEDEYFVSRKLYPNVDFYSGFIYKALGFPPE 344
Citrate_synt pfam00285
Citrate synthase, C-terminal domain; This is the long, C-terminal part of the enzyme.
 1-112 1.77e-58

Citrate synthase, C-terminal domain; This is the long, C-terminal part of the enzyme.


Pssm-ID: 459747 [Multi-domain]  Cd Length: 357  Bit Score: 183.48  E-value: 1.77e-58
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354      1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:pfam00285 218 ANEAVLEMLEEIGSPDEVEEYIRKVLNKGK-ERIMGFGHRVYKNYDPRAKILKEFAEELAEEGG--DDPLLELAEELEEV 294

                          90       100       110
                  ....*....|....*....|....*....|..
gi 1814354     81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:pfam00285 295 APEDLYFVEKNLYPNVDFYSGVLYHALGIPTD 326
PLN02456 PLN02456
citrate synthase
 1-112 4.02e-57

citrate synthase


Pssm-ID: 215250 [Multi-domain]  Cd Length: 455  Bit Score: 182.53  E-value: 4.02e-57
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:PLN02456 297 ANEAVLKMLKEIGTVENIPEYVEGVKNSKK--VLPGFGHRVYKNYDPRAKCIREFALEVFKHVG--DDPLFKVASALEEV 372

                         90       100       110
                 ....*....|....*....|....*....|..
gi 1814354    81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:PLN02456 373 ALLDEYFKVRKLYPNVDFYSGVLLRALGFPEE 404
CaCS_like cd06116
Chloroflexus aurantiacus (Ca) citrate synthase (CS)_like. CS catalyzes the condensation of ...
 1-112 9.60e-51

Chloroflexus aurantiacus (Ca) citrate synthase (CS)_like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). This group is similar to gram-negative Escherichia coli (Ec) CS (type II, gltA) and Arabidopsis thaliana (Ath) peroxisomal (Per) CS. However EcCS and AthPerCS are not found in this group. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). Some type II CSs are strongly and specifically inhibited by NADH through an allosteric mechanism. C. aurantiacus is a gram-negative thermophilic green gliding bacterium, its CS belonging to this group may be a type I CS; it is not inhibited by NADH or 2-oxoglutarate and is inhibited by ATP. Both gram-positive and gram-negative bacteria are found in this group.


Pssm-ID: 99869  Cd Length: 384  Bit Score: 164.23  E-value: 9.60e-51
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:cd06116 230 ANEAVLRMLQQIGSPKNIPDFIETVKQGKE--RLMGFGHRVYKNYDPRARIIKKIADEVFEATG--RNPLLDIAVELEKI 305

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06116 306 ALEDEYFISRKLYPNVDFYSGLIYQALGFPTE 337
citrate_synt cd06101
Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate ...
 1-112 1.73e-50

Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the oxidative citric acid cycle (TCA or Krebs cycle). Peroxisomal CS is involved in the glyoxylate cycle. This group also includes CS proteins which functions as a 2-methylcitrate synthase (2MCS). 2MCS catalyzes the condensation of propionyl-CoA (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and form homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). Some type II CSs are strongly and specifically inhibited by NADH through an allosteric mechanism. This subgroup includes both gram-positive and gram-negative bacteria.


Pssm-ID: 99855 [Multi-domain]  Cd Length: 265  Bit Score: 160.17  E-value: 1.73e-50
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:cd06101 123 ANEAVLKMLEEIGTPKNEPAEAYIRKKLNSKRVLMGFGHRVYKKYDPRATVLKKFAEKLLKEKG--LDPMFELAAELEKI 200

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFveKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06101 201 APEVLYE--KKLYPNVDFYSGVLYKAMGFPTE 230
AthCS_per_like cd06115
Arabidopsis thaliana (Ath) peroxisomal (Per) CS_like. CS catalyzes the condensation of acetyl ...
 1-112 2.43e-50

Arabidopsis thaliana (Ath) peroxisomal (Per) CS_like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. This group contains three Arabidopsis peroxisomal CS proteins, CYS1, -2, and -3 which are involved in the glyoxylate cycle. AthCYS1, in addition to a peroxisomal targeting sequence, has a predicted secretory signal peptide; it may be targeted to both the secretory pathway and the peroxisomes and is thought to be located in the extracellular matrix. AthCSY1 is expressed only in siliques and specifically in developing seeds. AthCSY2 and 3 are active during seed germination and seedling development and are thought to participate in the beta-oxidation of fatty acids.


Pssm-ID: 99868  Cd Length: 410  Bit Score: 163.77  E-value: 2.43e-50
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIqdDPLLDIAIELEKI 80
Cdd:cd06115 257 ANEAVLRMLAEIGTVENIPAFIEGVKNRKR--KLSGFGHRVYKNYDPRAKIIKKLADEVFEIVGK--DPLIEIAVALEKA 332

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06115 333 ALSDEYFVKRKLYPNVDFYSGLIYRAMGFPTD 364
CS_ACL-C_CCL cd06099
Citrate synthase (CS), citryl-CoA lyase (CCL), the C-terminal portion of the single-subunit ...
 1-112 3.04e-50

Citrate synthase (CS), citryl-CoA lyase (CCL), the C-terminal portion of the single-subunit type ATP-citrate lyase (ACL) and the C-terminal portion of the large subunit of the two-subunit type ACL. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) from citrate and coenzyme A (CoA), the first step in the oxidative citric acid cycle (TCA or Krebs cycle). Peroxisomal CS is involved in the glyoxylate cycle. Some CS proteins function as a 2-methylcitrate synthase (2MCS). 2MCS catalyzes the condensation of propionyl-CoA (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. CCL cleaves citryl-CoA (CiCoA) to AcCoA and OAA. ACLs catalyze an ATP- and a CoA- dependant cleavage of citrate to form AcCoA and OAA; they do this in a multistep reaction, the final step of which is likely to involve the cleavage of CiCoA to generate AcCoA and OAA. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate CiCoA, and c) the hydrolysis of CiCoA to produce citrate and CoA. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). Some type II CSs are strongly and specifically inhibited by NADH through an allosteric mechanism. In fungi, yeast, plants, and animals ACL is cytosolic and generates AcCoA for lipogenesis. In several groups of autotrophic prokaryotes and archaea, ACL carries out the citrate-cleavage reaction of the reductive tricarboxylic acid (rTCA) cycle. In the family Aquificaceae this latter reaction in the rTCA cycle is carried out via a two enzyme system the second enzyme of which is CCL.


Pssm-ID: 99853 [Multi-domain]  Cd Length: 213  Bit Score: 157.88  E-value: 3.04e-50
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:cd06099  71 ANEAVLKMLEEIGTPKNEPAEAYIRKKLESKRVIMGFGHRVYKKYDPRATVLKKFAEELLKEDG--DDPMFELAAELEKI 148

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFveKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06099 149 AEEVLYE--KKLYPNVDFYSGVLYKAMGFPTE 178
citrate_synt_like_1 cd06118
Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate ...
 1-112 1.09e-47

Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the oxidative citric acid cycle (TCA or Krebs cycle). Peroxisomal CS is involved in the glyoxylate cycle. This group also includes CS proteins which functions as a 2-methylcitrate synthase (2MCS). 2MCS catalyzes the condensation of propionyl-CoA (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). Some type II CSs are strongly and specifically inhibited by NADH through an allosteric mechanism.


Pssm-ID: 99871 [Multi-domain]  Cd Length: 358  Bit Score: 155.84  E-value: 1.09e-47
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVkrIPEFIARAKDKNDPFRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:cd06118 218 ANEAVLKMLLEIGTP--ENVEAYIWKKLANKRRIMGFGHRVYKTYDPRAKILKELAEELAEEKG--DDKLFEIAEELEEI 293

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNDEYFveKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06118 294 ALEVLGE--KGIYPNVDFYSGVVYKALGFPTE 323
PRK14036 PRK14036
citrate synthase; Provisional
 1-111 4.61e-33

citrate synthase; Provisional


Pssm-ID: 237591 [Multi-domain]  Cd Length: 377  Bit Score: 118.14  E-value: 4.61e-33
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIqdDPLLDIAIELEKI 80
Cdd:PRK14036 223 ANEDVLAMLEEIGSVENVRPYLDERLANKQ--KIMGFGHREYKVKDPRATILQKLAEELFARFGH--DEYYEIALELERV 298

                         90       100       110
                 ....*....|....*....|....*....|.
gi 1814354    81 AlnDEYFVEKKLYPNVDFYSGITLKALGFPT 111
Cdd:PRK14036 299 A--EERLGPKGIYPNVDFYSGLVYRKLGIPR 327
citrate_synt_like_1_1 cd06112
Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate ...
 1-112 6.77e-33

Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the oxidative citric acid cycle (TCA or Krebs cycle). Peroxisomal CS is involved in the glyoxylate cycle. This group also includes CS proteins which functions as a 2-methylcitrate synthase (2MCS). 2MCS catalyzes the condensation of propionyl-CoA (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). Some type II CSs are strongly and specifically inhibited by NADH through an allosteric mechanism.


Pssm-ID: 99865  Cd Length: 373  Bit Score: 117.52  E-value: 6.77e-33
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiQDDPLLDIAIELEKI 80
Cdd:cd06112 222 ANEDVLEMLEEIGSPENVKAYLDKKLANKQ--KIWGFGHRVYKTKDPRATILQKLAEDLFAKMG-ELSKLYEIALEVERL 298

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALndEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06112 299 CE--ELLGHKGVYPNVDFYSGIVYKELGIPAD 328
Cit_synThplmales NF041157
citrate synthase;
1-110 1.53e-29

citrate synthase;


Pssm-ID: 469069  Cd Length: 376  Bit Score: 108.56  E-value: 1.53e-29
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARaKDKNDPFRLMGFGHRVYKNYDPRAKIMqKTCHEVLKELNIQDDpLLDIAIELEKI 80
Cdd:NF041157 220 AAEAAFKQFLEIGSPDNVEKWFNE-NIINGKKRLMGFGHRVYKTYDPRAKIF-KEYAEKLASTNEAKK-YLEIAEKLEEL 296

                         90       100       110
                 ....*....|....*....|....*....|
gi 1814354    81 ALndEYFVEKKLYPNVDFYSGITLKALGFP 110
Cdd:NF041157 297 GI--KHFGSKGIYPNTDFYSGIVFYSLGFP 324
cit_synth_II TIGR01800
2-methylcitrate synthase/citrate synthase II; Members of this family are dimeric enzymes with ...
 1-112 1.87e-28

2-methylcitrate synthase/citrate synthase II; Members of this family are dimeric enzymes with activity as 2-methylcitrate synthase, citrate synthase, or both. Many Gram-negative species have a hexameric citrate synthase, termed citrate synthase I (TIGR01798). Members of this family (TIGR01800) appear as a second citrate synthase isozyme but typically are associated with propionate metabolism and synthesize 2-methylcitrate from propionyl-CoA; citrate synthase activity may be incidental. A number of species, including Thermoplasma acidophilum, Pyrococcus furiosus, and the Antarctic bacterium DS2-3R have a bifunctional member of this family as the only citrate synthase isozyme.


Pssm-ID: 130859  Cd Length: 368  Bit Score: 105.52  E-value: 1.87e-28
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354      1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQktchEVLKELN--IQDDPLLDIAIELE 78
Cdd:TIGR01800 218 ANEAVMAMLDEIGDPDKAEAWIRKALENKE--RIMGFGHRVYKTYDPRAKILK----EYAKKLSakEGSSKWYEIAERLE 291

                          90       100       110
                  ....*....|....*....|....*....|....
gi 1814354     79 KIALNdeyfvEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:TIGR01800 292 DVMEE-----EKGIYPNVDFFSASVYYMMGIPTD 320
BSuCS-II_like cd06110
Bacillus subtilis (Bs) citrate synthase (CS)-II_like. CS catalyzes the condensation of acetyl ...
 1-111 2.15e-28

Bacillus subtilis (Bs) citrate synthase (CS)-II_like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). 2MCS catalyzes the condensation of propionyl-coenzyme A (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. The overall CS reaction is thought to proceed through three partial reactions: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. This group contains proteins similar to BsCS-II, the major CS of the gram-positive bacterium Bacillus subtilis. A mutation in the gene which encodes BsCS-II (citZ gene) has been described which resulted in a significant loss of CS activity, partial glutamate auxotrophy, and a sporulation deficiency, all of which are characteristic of strains defective in the Krebs cycle. Streptococcus mutans CS, found in this group, may participate in a pathway for the anaerobic biosynthesis of glutamate. This group also contains functionally uncharacterized CSs of various gram-negative bacteria. Some of the gram-negative species represented in this group have a second CS isozyme found in another group. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS.


Pssm-ID: 99863 [Multi-domain]  Cd Length: 356  Bit Score: 105.43  E-value: 2.15e-28
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:cd06110 218 ANERVMKMLLEIGSVDNVAAYVKDKLANKE--KIMGFGHRVYKTGDPRAKHLREMSRRLGKETG--EPKWYEMSEAIEQA 293

                        90       100       110
                ....*....|....*....|....*....|.
gi 1814354   81 ALNdeyfvEKKLYPNVDFYSGITLKALGFPT 111
Cdd:cd06110 294 MRD-----EKGLNPNVDFYSASVYYMLGIPV 319
PRK14037 PRK14037
citrate synthase; Provisional
 1-110 8.02e-27

citrate synthase; Provisional


Pssm-ID: 184470  Cd Length: 377  Bit Score: 101.36  E-value: 8.02e-27
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIaraKDK--NDPFRLMGFGHRVYKNYDPRAKIMqKTCHEVLKELNIQDDPLLDIAIELE 78
Cdd:PRK14037 221 AAEEAFKQFVEIGDPNNVEMWF---NDKiiNGKKRLMGFGHRVYKTYDPRAKIF-KELAETLIERNSEAKKYFEIAQKLE 296

                         90       100       110
                 ....*....|....*....|....*....|..
gi 1814354    79 KIALndEYFVEKKLYPNVDFYSGITLKALGFP 110
Cdd:PRK14037 297 ELGI--KQFGSKGIYPNTDFYSGIVFYALGFP 326
BsCS-I_like cd06109
Bacillus subtilis (Bs) citrate synthase CS-I_like. CS catalyzes the condensation of acetyl ...
 6-112 3.72e-24

Bacillus subtilis (Bs) citrate synthase CS-I_like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). 2MCS catalyzes the condensation of propionyl-coenzyme A (PrCoA) and OAA to form 2-methylcitrate and coenzyme A (CoA) during propionate metabolism. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. This group contains proteins similar to BsCS-I, one of two CS isozymes in the gram-positive B. subtilis. The majority of CS activity in B. subtilis is provided by the other isozyme, BsCS-II (not included in this group). BsCS-I has a lower catalytic activity than BsCS-II, and has a Glu in place of a key catalytic Asp residue. This change is conserved in other members of this group. For E. coli CS (not included in this group), site directed mutagenesis of the key Asp residue to a Glu converts the enzyme into citryl-CoA lyase which cleaves citryl-CoA to AcCoA and OAA. A null mutation in the gene encoding BsCS-I (citA) had little effect on B. subtilis CS activity or on sporulation. However, disruption of the citA gene in a strain null for the gene encoding BsCS-II resulted in a sporulation deficiency, a characteristic of strains defective in the Krebs cycle. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS. Many of the gram-negative species represented in this group have a second CS isozyme which is in another group.


Pssm-ID: 99862 [Multi-domain]  Cd Length: 349  Bit Score: 93.91  E-value: 3.72e-24
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    6 LKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQktchEVLKELNiQDDPLLDIAIELEKIALN-- 83
Cdd:cd06109 212 LDMLDAIGTPENAEAWLREALARGE--RLMGFGHRVYRVRDPRADVLK----AAAERLG-APDERLEFAEAVEQAALAll 284

                        90       100
                ....*....|....*....|....*....
gi 1814354   84 DEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06109 285 REYKPGRPLETNVEFYTALLLEALGLPRE 313
Ec2MCS_like cd06108
Escherichia coli (Ec) 2-methylcitrate synthase (2MCS)_like. 2MCS catalyzes the condensation of ...
 1-112 1.11e-21

Escherichia coli (Ec) 2-methylcitrate synthase (2MCS)_like. 2MCS catalyzes the condensation of propionyl-coenzyme A (PrCoA) and oxalacetate (OAA) to form 2-methylcitrate and coenzyme A (CoA) during propionate metabolism. Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and OAA to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). This group contains proteins similar to the E. coli 2MCS, EcPrpC. EcPrpC is one of two CS isozymes in the gram-negative E. coli. EcPrpC is a dimeric (type I ) CS; it is induced during growth on propionate and prefers PrCoA as a substrate though it has partial CS activity with AcCoA. This group also includes Salmonella typhimurium PrpC and Ralstonia eutropha (Re) 2-MCS1 which are also induced during growth on propionate and prefer PrCoA as substrate, but can also use AcCoA. Re 2-MCS1 can use butyryl-CoA and valeryl-CoA at a lower rate. A second Ralstonia eutropha 2MCS, Re 2-MCS2, which is induced on propionate is also found in this group. This group may include proteins which may function exclusively as a CS, those which may function exclusively as a 2MCS, or those with dual specificity which functions as both a CS and a 2MCS.


Pssm-ID: 99861 [Multi-domain]  Cd Length: 363  Bit Score: 87.36  E-value: 1.11e-21
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:cd06108 216 ANEAAMELIERFKSPEEAEQGLLEKLERKE--LIMGFGHRVYKEGDPRSDIIKKWSKKLSEEGG--DPLLYQISERIEEV 291

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 ALNdeyfvEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06108 292 MWE-----EKKLFPNLDFYSASAYHFCGIPTE 318
PRK14034 PRK14034
citrate synthase; Provisional
 1-108 1.68e-20

citrate synthase; Provisional


Pssm-ID: 184467 [Multi-domain]  Cd Length: 372  Bit Score: 84.43  E-value: 1.68e-20
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKI 80
Cdd:PRK14034 221 ANENVMKMLTEIGEEENVESYIHNKLQNKE--KIMGFGHRVYRQGDPRAKHLREMSKRLTVLLG--EEKWYNMSIKIEEI 296

                         90       100
                 ....*....|....*....|....*...
gi 1814354    81 ALNdeyfvEKKLYPNVDFYSGITLKALG 108
Cdd:PRK14034 297 VTK-----EKGLPPNVDFYSASVYHCLG 319
DsCS_like cd06111
Cold-active citrate synthase (CS) from an Antarctic bacterial strain DS2-3R (Ds)-like. CS ...
 1-112 3.57e-19

Cold-active citrate synthase (CS) from an Antarctic bacterial strain DS2-3R (Ds)-like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). 2-methylcitrate synthase (2MCS) catalyzes the condensation of propionyl-coenzyme A (PrCoA) and OAA to form 2-methylcitrate and coenzyme A (CoA) during propionate metabolism. The overall CS reaction is thought to proceed through three partial reactions: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. DsCS, compared with CS from the hyperthermophile Pyrococcus furiosus (not included in this group), has an increase in the size of surface loops, a higher proline content in the loop regions, a more accessible active site, and a higher number of intramolecular ion pairs. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS. For example, included in this group are Corynebacterium glutamicum (Cg) PrpC1 and -2, which are only synthesized during growth on propionate-containing medium, can use PrCoA, AcCoA and butyryl-CoA as substrates, and have comparable catalytic activity with AcCoA as the major CgCS (GltA, not included in this group).


Pssm-ID: 99864 [Multi-domain]  Cd Length: 362  Bit Score: 80.53  E-value: 3.57e-19
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIQDdpLLDIAIELEKI 80
Cdd:cd06111 218 ANEAVMHMMLEIDDPEKAAQWMLDALARKE--KVMGFGHRVYKSGDSRVPTMEKALRRVAAVHDGQK--WLAMYDALEDA 293

                        90       100       110
                ....*....|....*....|....*....|..
gi 1814354   81 AlndeyFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06111 294 M-----VAAKGIKPNLDFPAGPAYYLMGFDID 320
PRK12350 PRK12350
citrate synthase 2; Provisional
 6-112 4.91e-19

citrate synthase 2; Provisional


Pssm-ID: 237070 [Multi-domain]  Cd Length: 353  Bit Score: 80.01  E-value: 4.91e-19
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     6 LKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTChevlKELniqDDPLLDIAIELEKIALndE 85
Cdd:PRK12350 211 LPMLDAVERTGDARGWVKGALDRGE--RLMGFGHRVYRAEDPRARVLRATA----KRL---GAPRYEVAEAVEQAAL--A 279

                         90       100       110
                 ....*....|....*....|....*....|.
gi 1814354    86 YFVEKK----LYPNVDFYSGITLKALGFPTE 112
Cdd:PRK12350 280 ELRERRpdrpLETNVEFWAAVLLDFAGVPAH 310
PRK14033 PRK14033
bifunctional 2-methylcitrate synthase/citrate synthase;
1-112 1.70e-18

bifunctional 2-methylcitrate synthase/citrate synthase;


Pssm-ID: 237590 [Multi-domain]  Cd Length: 375  Bit Score: 78.84  E-value: 1.70e-18
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNIQDdpLLDIAIELEKi 80
Cdd:PRK14033 228 ANEAVMHTMLEIGDPARAAEWLRDALARKE--KVMGFGHRVYKHGDSRVPTMKAALRRVAAVRDGQR--WLDIYEALEK- 302

                         90       100       110
                 ....*....|....*....|....*....|..
gi 1814354    81 alndEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:PRK14033 303 ----AMAEATGIKPNLDFPAGPAYYLMGFDID 330
PRK14035 PRK14035
citrate synthase; Provisional
 1-110 2.46e-18

citrate synthase; Provisional


Pssm-ID: 184468 [Multi-domain]  Cd Length: 371  Bit Score: 78.26  E-value: 2.46e-18
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIARAKDKNDpfRLMGFGHRVYKNYDPRAKIMQKTCHEVLKElnIQDDPLLDIAIELEKI 80
Cdd:PRK14035 221 ANERVMDMLSEIRSIGDVDAYLDEKFANKE--KIMGFGHRVYKDGDPRAKYLREMSRKITKG--TGREELFEMSVKIEKR 296

                         90       100       110
                 ....*....|....*....|....*....|
gi 1814354    81 ALNdeyfvEKKLYPNVDFYSGITLKALGFP 110
Cdd:PRK14035 297 MKE-----EKGLIPNVDFYSATVYHVMGIP 321
PRK12349 PRK12349
citrate synthase;
1-112 2.38e-17

citrate synthase;


Pssm-ID: 237069 [Multi-domain]  Cd Length: 369  Bit Score: 75.53  E-value: 2.38e-17
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIAR---AKDKndpfrLMGFGHRVY-KNYDPRAKIMQktchEVLKELNIQ--DDPLLDIA 74
Cdd:PRK12349 224 ANEAVMYMLLEAGTVEKFEELLQKklyNKEK-----IMGFGHRVYmKKMDPRALMMK----EALKQLCDVkgDYTLYEMC 294

                         90       100       110
                 ....*....|....*....|....*....|....*...
gi 1814354    75 IELEKIALNdeyfvEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:PRK12349 295 EAGEKIMEK-----EKGLYPNLDYYAAPVYWMLGIPIQ 327
PRK12351 PRK12351
methylcitrate synthase; Provisional
 1-112 8.28e-13

methylcitrate synthase; Provisional


Pssm-ID: 183463 [Multi-domain]  Cd Length: 378  Bit Score: 62.63  E-value: 8.28e-13
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEIGSVKRIPEFIAR---AKDKndpfrLMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIEL 77
Cdd:PRK12351 228 ANEVAFEIQQRYDTPDEAEADIRRrveNKEV-----VIGFGHPVYTISDPRNKVIKEVAKKLSKEAG--DTKLYDIAERL 300

                         90       100       110
                 ....*....|....*....|....*....|....*
gi 1814354    78 EKIALNdeyfvEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:PRK12351 301 ETVMWE-----EKKMFPNLDWFSAVSYHMMGVPTA 330
CCL_ACL-C cd06100
Citryl-CoA lyase (CCL), the C-terminal portion of the single-subunit type ATP-citrate lyase ...
 1-112 1.35e-12

Citryl-CoA lyase (CCL), the C-terminal portion of the single-subunit type ATP-citrate lyase (ACL) and the C-terminal portion of the large subunit of the two-subunit type ACL. CCL cleaves citryl-CoA (CiCoA) to acetyl-CoA (AcCoA) and oxaloacetate (OAA). ACL catalyzes an ATP- and a CoA- dependant cleavage of citrate to form AcCoA and OAA in a multistep reaction, the final step of which is likely to involve the cleavage of CiCoA to generate AcCoA and OAA. In fungi, yeast, plants, and animals ACL is cytosolic and generates AcCoA for lipogenesis. ACL may be required for fruiting body maturation in the filamentous fungus Sordaria macrospore. In several groups of autotrophic prokaryotes and archaea, ACL carries out the citrate-cleavage reaction of the reductive tricarboxylic acid (rTCA) cycle. In the family Aquificaceae this latter reaction in the rTCA cycle is carried out via a two enzyme system the second enzyme of which is CCL; the first enzyme is citryl-CoA synthetase (CCS) which is not included in this group. Chlorobium limicola ACL is an example of a two-subunit type ACL. It is comprised of a large and a small subunit; it has been speculated that the large subunit arose from a fusion of the small subunit of the two subunit CCS with CCL. The small ACL subunit is a homolog of the larger CCS subunit. Mammalian ACL is of the single-subunit type and may have arisen from the two-subunit ACL by another gene fusion. Mammalian ACLs are homotetramers; the ACLs of C. limicola and Arabidopsis are a heterooctomers (alpha4beta4). In cancer cells there is a shift in energy metabolism to aerobic glycolysis, the glycolytic end product pyruvate enters a truncated TCA cycle generating citrate which is cleaved in the cytosol by ACL. Inhibiting ACL limits the in-vitro proliferation and survival of these cancer cells, reduces in vivo tumor growth, and induces differentiation.


Pssm-ID: 99854 [Multi-domain]  Cd Length: 227  Bit Score: 61.04  E-value: 1.35e-12
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    1 ANEACLKMLQEI----GSVKRIP-EFIARAKDKNdpFRLMGFGHRVYKNYDPRAKIMqktcHEVLKELNIqDDPLLDIAI 75
Cdd:cd06100  83 AGEGAARLFKEAvdsgDALDAAAaEFVAEYRAAK--KRIPGFGHPVHKNPDPRVPRL----LELARELGP-AGPHLDYAL 155

                        90       100       110
                ....*....|....*....|....*....|....*..
gi 1814354   76 ELEKIALNDEyfvEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06100 156 AVEKALTAAK---GKPLPLNVDGAIAAILLDLGFPPG 189
Ec2MCS_like_1 cd06117
Subgroup of Escherichia coli (Ec) 2-methylcitrate synthase (2MCS)_like. 2MCS catalyzes the ...
 34-112 5.16e-10

Subgroup of Escherichia coli (Ec) 2-methylcitrate synthase (2MCS)_like. 2MCS catalyzes the condensation of propionyl-coenzyme A (PrCoA) and oxalacetate (OAA) to form 2-methylcitrate and coenzyme A (CoA) during propionate metabolism. Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and OAA to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). This group contains proteins similar to the E. coli 2MCS, EcPrpC. EcPrpC is one of two CS isozymes in the gram-negative E. coli. EcPrpC is a dimeric (type I ) CS; it is induced during growth on propionate and prefers PrCoA as a substrate, but has a partial CS activity with AcCoA. This group also includes Salmonella typhimurium PrpC and Ralstonia eutropha (Re) 2-MCS1 which are also induced during growth on propionate, prefer PrCoA as substrate, but can also can use AcCoA. Re 2-MCS1 at a low rate can use butyryl-CoA and valeryl-CoA. A second Ralstonia eutropha 2MCS is also found in this group, Re 2-MCS2, which is induced on propionate. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS.


Pssm-ID: 99870 [Multi-domain]  Cd Length: 366  Bit Score: 54.85  E-value: 5.16e-10
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1814354   34 LMGFGHRVYKNYDPRAKIMQKTCHEVLKELNiqDDPLLDIAIELEKIALNdeyfvEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06117 250 VIGFGHPVYTIADPRNQVIKEVAKQLSKEGG--DMKMFDIAERLETVMWE-----EKKMFPNLDWFSAVSYHMMGVPTA 321
citrate_synt_like_1_2 cd06113
Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate ...
 36-112 1.27e-09

Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the oxidative citric acid cycle (TCA or Krebs cycle). Peroxisomal CS is involved in the glyoxylate cycle. This group also includes CS proteins which functions as a 2-methylcitrate synthase (2MCS). 2MCS catalyzes the condensation of propionyl-CoA (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) a carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) hydrolysis of citryl-CoA to produce citrate and CoA. CSs are found in two structural types: type I (homodimeric) and type II CSs (homohexameric). Type II CSs are unique to gram-negative bacteria. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria. Type I CS is active as a homodimer, both subunits participating in the active site. Type II CS is a hexamer of identical subunits (approximated as a trimer of dimers). Some type II CSs are strongly and specifically inhibited by NADH through an allosteric mechanism. This subgroup includes both gram-positive and gram-negative bacteria.


Pssm-ID: 99866  Cd Length: 406  Bit Score: 53.81  E-value: 1.27e-09
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1814354   36 GFGHRVYKNYDPRAKIMQKTCHEVLKELNIQDDPLLDIAIE-LEKIALNDEYFVEKKLYPNVDFYSGITLKALGFPTE 112
Cdd:cd06113 292 GMGHAVYTLSDPRAVVLKKYARSLAKEKGREEEFALYERIErLAPEVIAEERGIGKTVCANVDFYSGFVYKMLGIPQE 369
PRK14032 PRK14032
citrate synthase; Provisional
 36-112 1.47e-08

citrate synthase; Provisional


Pssm-ID: 184465 [Multi-domain]  Cd Length: 447  Bit Score: 50.67  E-value: 1.47e-08
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    36 GFGHRVYKNYDPRAKIMQKTCHEVLKELNIQDDPLLDIAIEleKIAlnDEYFVEKK-----LYPNVDFYSGITLKALGFP 110
Cdd:PRK14032 322 GMGHAVYTISDPRAVILKKFAEKLAKEKGREEEFNLYEKIE--KLA--PELIAEERgiykgVSANVDFYSGFVYDMLGIP 397


                 ..
gi 1814354   111 TE 112
Cdd:PRK14032 398 EE 399
PRK09569 PRK09569
citrate (Si)-synthase;
1-110 2.12e-07

citrate (Si)-synthase;


Pssm-ID: 181961  Cd Length: 437  Bit Score: 47.44  E-value: 2.12e-07
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACL----KMLQEIGSVKRIPEFIARA-KDKNDPFRLM-GFGHRVYKNYDPRAKIMQKTCHEVLKelniqDDPLLDIA 74
Cdd:PRK09569 273 ANQEVLgwiqQFQEKLGGEEPTKEQVEQAlWDTLNAGQVIpGYGHAVLRKTDPRYTAQREFCLKHLP-----DDPLFKLV 347

                         90       100       110
                 ....*....|....*....|....*....|....*...
gi 1814354    75 IELEKIA--LNDEYFVEKKLYPNVDFYSGITLKALGFP 110
Cdd:PRK09569 348 AMIFEVApgVLTEHGKTKNPWPNVDAQSGVIQWYYGVK 385
PRK06224 PRK06224
citryl-CoA lyase;
1-77 1.11e-05

citryl-CoA lyase;


Pssm-ID: 235748 [Multi-domain]  Cd Length: 263  Bit Score: 42.55  E-value: 1.11e-05
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354     1 ANEACLKMLQEI-------GSVKRIPEFIA---RAKDKndpfRLMGFGHRVYKNYDPRAKimqktchevlkelniqddPL 70
Cdd:PRK06224 105 AGEQAAELLQEIaaaadagADLDAAARAIVaeyRAAGK----RVPGFGHPLHKPVDPRAP------------------RL 162


                 ....*..
gi 1814354    71 LDIAIEL 77
Cdd:PRK06224 163 LALAREA 169
ScCit3_like cd06106
Saccharomyces cerevisiae (Sc) 2-methylcitrate synthase Cit3-like. 2-methylcitrate synthase ...
 6-109 2.52e-05

Saccharomyces cerevisiae (Sc) 2-methylcitrate synthase Cit3-like. 2-methylcitrate synthase (2MCS) catalyzes the condensation of propionyl-coenzyme A (PrCoA) and oxaloacetate (OAA) to form 2-methylcitrate and CoA. Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) with OAA to form citrate and CoA, the first step in the citric acid cycle (TCA or Krebs cycle). The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). ScCit3 is mitochondrial and functions in the metabolism of PrCoA; it is a dual specificity CS and 2MCS, having similar catalytic efficiency with both AcCoA and PrCoA. The pattern of expression of the ScCIT3 gene follows that of the major mitochondrial CS gene (CIT1, not included in this group) and its expression is increased in the presence of a CIT1 deletion. This group also contains Aspergillus nidulans 2MCS; a deletion of the gene encoding this protein results in a strain unable to grow on propionate. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS.


Pssm-ID: 99859  Cd Length: 428  Bit Score: 41.72  E-value: 2.52e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1814354    6 LKMLQEIGSVKRIPEFIARAKDKNDPFRLM-GFGHRVYKNYDPRAKIMQKTCHevlKELNIQDDPLLDIAIELEKIA--L 82
Cdd:cd06106 282 LEMQKNIGSKATDQDIRDYLWKTLKSGRVVpGYGHAVLRKPDPRFTALMEFAQ---TRPELENDPVVQLVQKLSEIApgV 358

                        90       100
                ....*....|....*....|....*..
gi 1814354   83 NDEYFVEKKLYPNVDFYSGITLKALGF 109
Cdd:cd06106 359 LTEHGKTKNPFPNVDAASGVLFYHYGI 385
ScCit1-2_like cd06105
Saccharomyces cerevisiae (Sc) citrate synthases Cit1-2_like. Citrate synthases (CS) catalyzes ...
 36-108 2.58e-04

Saccharomyces cerevisiae (Sc) citrate synthases Cit1-2_like. Citrate synthases (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) with oxaloacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). Some CS proteins function as 2-methylcitrate synthase (2MCS). 2MCS catalyzes the condensation of propionyl-coenzyme A (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). ScCit1 is a nuclear-encoded mitochondrial CS with highly specificity for AcCoA. In addition to its CS function, ScCit1 plays a part in the construction of the TCA cycle metabolon. Yeast cells deleted for Cit1 are hyper-susceptible to apoptosis induced by heat and aging stress. ScCit2 is a peroxisomal CS involved in the glyoxylate cycle; in addition to having activity with AcCoA, it may have activity with PrCoA. Chicken and pig heart CS, two Arabidopsis thaliana (Ath) CSs, CSY4 and -5, and Aspergillus niger (An) CS also belong to this group. Ath CSY4 has a mitochondrial targeting sequence; AthCSY5 has no identifiable targeting sequence. AnCS encoded by the citA gene has both an N-terminal mitochondrial import signal and a C-terminal peroxisiomal target sequence; it is not known if both these signals are functional in vivo. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS.


Pssm-ID: 99858  Cd Length: 427  Bit Score: 38.50  E-value: 2.58e-04
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1814354   36 GFGHRVYKNYDPRAkimqkTCHEVLKELNIQDDPLLDIAIELEKIALN--DEYFVEKKLYPNVDFYSGITLKALG 108
Cdd:cd06105 311 GYGHAVLRKTDPRY-----TCQREFALKHLPNDPLFKLVSQLYKIVPPvlTEQGKAKNPWPNVDAHSGVLLQYYG 380
HflX cd01878
HflX GTPase family; HflX subfamily. A distinct conserved domain with a glycine-rich segment ...
 46-107 3.41e-03

HflX GTPase family; HflX subfamily. A distinct conserved domain with a glycine-rich segment N-terminal of the GTPase domain characterizes the HflX subfamily. The E. coli HflX has been implicated in the control of the lambda cII repressor proteolysis, but the actual biological functions of these GTPases remain unclear. HflX is widespread, but not universally represented in all three superkingdoms.


Pssm-ID: 206666 [Multi-domain]  Cd Length: 204  Bit Score: 35.13  E-value: 3.41e-03
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1814354   46 DPRAKIMQKTCHEVLKELNIQDDPLLdiaIELEKIALNDEYFVEKKL---YPNVDFYS---GITLKAL 107
Cdd:cd01878 132 DPDREEQIETVEEVLKELGADDIPII---LVLNKIDLLDDEELEERLragRPDAVFISaktGEGLDLL 196
citrate_synt_like_2 cd06102
Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate ...
 33-98 3.51e-03

Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the oxidative citric acid cycle (TCA or Krebs cycle). Peroxisomal CS is involved in the glyoxylate cycle. This group also includes CS proteins which functions as a 2-methylcitrate synthase (2MCS). 2MCS catalyzes the condensation of propionyl-CoA (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). Some type II CSs are strongly and specifically inhibited by NADH through an allosteric mechanism. This subgroup includes both gram-positive and gram-negative bacteria.


Pssm-ID: 99856 [Multi-domain]  Cd Length: 282  Bit Score: 35.31  E-value: 3.51e-03
                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1814354   33 RLMGFGHRVYKNYDPRAKIMQktchEVLKELNIQDDPLLDiaiELEKIALNdeyfvEKKLYPNVDF 98
Cdd:cd06102 179 ALPGFGHPLYPDGDPRAAALL----AALRPLGPAAPPAAR---ALIEAARA-----LTGARPNIDF 232
ScCS-like cd06103
Saccharomyces cerevisiae (Sc) citrate synthase (CS)-like. CS catalyzes the condensation of ...
 36-108 5.75e-03

Saccharomyces cerevisiae (Sc) citrate synthase (CS)-like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) with oxaloacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). Some CS proteins function as 2-methylcitrate synthase (2MCS). 2MCS catalyzes the condensation of propionyl-coenzyme A (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and c) the hydrolysis of citryl-CoA to produce citrate and CoA. There are two types of CSs: type I CS and type II CSs. Type I CSs are found in eukarya, gram-positive bacteria, archaea, and in some gram-negative bacteria and are homodimers with both subunits participating in the active site. Type II CSs are unique to gram-negative bacteria and are homohexamers of identical subunits (approximated as a trimer of dimers). This group includes three S. cerevisiae CS proteins, ScCit1,-2,-3. ScCit1 is a nuclear-encoded mitochondrial CS with highly specificity for AcCoA; in addition to having activity with AcCoA, it plays a part in the construction of the TCA cycle metabolon. Yeast cells deleted for Cit1 are hyper-susceptible to apoptosis induced by heat and aging stress. ScCit2 is a peroxisomal CS involved in the glyoxylate cycle; in addition to having activity with AcCoA, it may have activity with PrCoA. ScCit3 is a mitochondrial CS and functions in the metabolism of PrCoA; it is a dual specificity CS and 2MCS, having similar catalytic efficiency with both AcCoA and PrCoA. The pattern of expression of the ScCIT3 gene follows that of the ScCIT1 gene and its expression is increased in the presence of a ScCIT1 deletion. Included in this group is the Tetrahymena 14 nm filament protein which functions as a CS in mitochondria and as a cytoskeletal component in cytoplasm and Geobacter sulfurreducens (GSu) CS. GSuCS is dimeric and eukaryotic-like; it lacks 2MCS activity and is inhibited by ATP. In contrast to eukaryotic and other prokaryotic CSs, GSuCIT is not stimulated by K+ ions. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS.


Pssm-ID: 99857  Cd Length: 426  Bit Score: 34.97  E-value: 5.75e-03
                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1814354   36 GFGHRVYKNYDPRakimqktcHEVLKEL---NIQDDPLLDIAIELEKIALN--DEYFVEKKLYPNVDFYSGITLKALG 108
Cdd:cd06103 313 GYGHAVLRKTDPR--------FTCQREFalkHLPDDPLFKLVAQCYKIIPGvlKEHGKVKNPYPNVDAHSGVLLQHYG 382
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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