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Conserved domains on  [gi|1395434131|gb|AWQ38215|]
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nitrogenase iron protein NifH, partial [uncultured Alphaproteobacteria bacterium]

Protein Classification

P-loop NTPase family protein( domain architecture ID 1562424)

P-loop NTPase (nucleoside triphosphate hydrolase) family protein contains two conserved sequence signatures, the Walker A motif (the P-loop proper) and Walker B motif which bind, respectively, the beta and gamma phosphate moieties of the bound nucleotide (typically ATP or GTP), and a Mg(2+) cation

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
P-loop_NTPase super family cl38936
P-loop containing Nucleoside Triphosphate Hydrolases; Members of the P-loop NTPase domain ...
 1-108 3.98e-67

P-loop containing Nucleoside Triphosphate Hydrolases; Members of the P-loop NTPase domain superfamily are characterized by a conserved nucleotide phosphate-binding motif, also referred to as the Walker A motif (GxxxxGK[S/T], where x is any residue), and the Walker B motif (hhhh[D/E], where h is a hydrophobic residue). The Walker A and B motifs bind the beta-gamma phosphate moiety of the bound nucleotide (typically ATP or GTP) and the Mg2+ cation, respectively. The P-loop NTPases are involved in diverse cellular functions, and they can be divided into two major structural classes: the KG (kinase-GTPase) class which includes Ras-like GTPases and its circularly permutated YlqF-like; and the ASCE (additional strand catalytic E) class which includes ATPase Binding Cassette (ABC), DExD/H-like helicases, 4Fe-4S iron sulfur cluster binding proteins of NifH family, RecA-like F1-ATPases, and ATPases Associated with a wide variety of Activities (AAA). Also included are a diverse set of nucleotide/nucleoside kinase families.


The actual alignment was detected with superfamily member TIGR01287:

Pssm-ID: 476819  Cd Length: 275  Bit Score: 203.00  E-value: 3.98e-67
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGSvEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVS 79
Cdd:TIGR01287  42 STRLLLGGKAQPTVLDVLREKGA-EDLELEDVIKEGFGGIRCVESGGPEPGVGCAGRGVITAINLLEELGAYeDDLDFVF 120

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:TIGR01287 121 YDVLGDVVCGGFAMPIREGKAQEIYIVTS 149
 
Name Accession Description Interval E-value
nifH TIGR01287
nitrogenase iron protein; This model describes nitrogenase (EC 1.18.6.1) iron protein, also ...
 1-108 3.98e-67

nitrogenase iron protein; This model describes nitrogenase (EC 1.18.6.1) iron protein, also called nitrogenase reductase or nitrogenase component II. This model includes molybdenum-iron nitrogenase reductase (nifH), vanadium-iron nitrogenase reductase (vnfH), and iron-iron nitrogenase reductase (anfH). The model excludes the homologous protein from the light-independent protochlorophyllide reductase. [Central intermediary metabolism, Nitrogen fixation]


Pssm-ID: 273538  Cd Length: 275  Bit Score: 203.00  E-value: 3.98e-67
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGSvEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVS 79
Cdd:TIGR01287  42 STRLLLGGKAQPTVLDVLREKGA-EDLELEDVIKEGFGGIRCVESGGPEPGVGCAGRGVITAINLLEELGAYeDDLDFVF 120

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:TIGR01287 121 YDVLGDVVCGGFAMPIREGKAQEIYIVTS 149
NifH/CfbC COG1348
Nitrogenase ATPase subunit NifH/coenzyme F430 biosynthesis subunit CfbC [Coenzyme transport ...
 1-108 5.48e-67

Nitrogenase ATPase subunit NifH/coenzyme F430 biosynthesis subunit CfbC [Coenzyme transport and metabolism, Inorganic ion transport and metabolism];


Pssm-ID: 440959  Cd Length: 276  Bit Score: 202.32  E-value: 5.48e-67
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGsvEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYE-DIDYVS 79
Cdd:COG1348    44 STRLLLGGKRIPTVLDTLREKG--EDVELEDIVFEGFGGVKCVEAGGPEPGVGCAGRGIITAIELLEELGAYEeDLDVVI 121

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:COG1348   122 YDVLGDVVCGGFAMPIREGYADEIYIVTS 150
NifH cd02040
nitrogenase component II NifH; NifH gene encodes component II (iron protein) of nitrogenase. ...
 1-108 1.96e-62

nitrogenase component II NifH; NifH gene encodes component II (iron protein) of nitrogenase. Nitrogenase is responsible for the biological nitrogen fixation, i.e. reduction of molecular nitrogen to ammonia. NifH consists of two oxygen-sensitive metallosulfur proteins: the mollybdenum-iron (alternatively, vanadium-iron or iron-iron) protein (commonly referred to as component 1), and the iron protein (commonly referred to as component 2). The iron protein is a homodimer, with an Fe4S4 cluster bound between the subunits and two ATP-binding domains. It supplies energy by ATP hydrolysis, and transfers electrons from reduced ferredoxin or flavodoxin to component 1 for the reduction of molecular nitrogen to ammonia.


Pssm-ID: 349759  Cd Length: 265  Bit Score: 190.42  E-value: 1.96e-62
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGsvEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVS 79
Cdd:cd02040    42 STRLLLGGKAIPTVLDTLREKG--EVEELEDVIKEGFNGIKCVESGGPEPGVGCAGRGIITAINLLEELGAYeEDLDVVF 119

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:cd02040   120 YDVLGDVVCGGFAMPIREGYADEVYIVTS 148
Fer4_NifH pfam00142
4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family;
1-108 3.06e-61

4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family;


Pssm-ID: 395090  Cd Length: 271  Bit Score: 187.65  E-value: 3.06e-61
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGSVEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYEDIDYVSY 80
Cdd:pfam00142  42 STRLLLGGKLQPTVLDTAREKGYVEDVEVEDVVYKGYGGVKCVESGGPEPGVGCAGRGVITAINLLEELGAYDDLDFVLY 121

                          90       100
                  ....*....|....*....|....*...
gi 1395434131  81 DVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:pfam00142 122 DVLGDVVCGGFAMPIREGKAQEIYIVTS 149
nifH PRK13233
nitrogenase iron protein;
1-108 1.55e-52

nitrogenase iron protein;


Pssm-ID: 183905  Cd Length: 275  Bit Score: 165.76  E-value: 1.55e-52
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGSvEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVS 79
Cdd:PRK13233   45 STRLILGGKPQTTMMDTLRELGE-EKVTPDKVIKTGFKDIRCVESGGPEPGVGCAGRGVITAIDLMEENGAYtDDLDFVF 123

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:PRK13233  124 FDVLGDVVCGGFAMPIRDGKAQEVYIVAS 152
F430_CfbC NF033200
Ni-sirohydrochlorin a,c-diamide reductive cyclase ATP-dependent reductase subunit; This family, ...
 1-108 1.62e-47

Ni-sirohydrochlorin a,c-diamide reductive cyclase ATP-dependent reductase subunit; This family, very closely related to the nitrogenase iron protein, was identified as a subunit involved in biosynthesis of coenzyme F430 in archaeal methanogens and archaeal anaerobic methanotrophs.


Pssm-ID: 380202  Cd Length: 260  Bit Score: 152.34  E-value: 1.62e-47
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGsveDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVS 79
Cdd:NF033200   42 STRTLMGGRRIPTILDLLRENK---NIKEEDVVFEGYGGVRCVESGGPEPGVGCAGRGIIVAMQLLEKLGAFmEDLDVII 118

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:NF033200  119 YDVLGDVVCGGFAVPLREGYADEVYIVTS 147
 
Name Accession Description Interval E-value
nifH TIGR01287
nitrogenase iron protein; This model describes nitrogenase (EC 1.18.6.1) iron protein, also ...
 1-108 3.98e-67

nitrogenase iron protein; This model describes nitrogenase (EC 1.18.6.1) iron protein, also called nitrogenase reductase or nitrogenase component II. This model includes molybdenum-iron nitrogenase reductase (nifH), vanadium-iron nitrogenase reductase (vnfH), and iron-iron nitrogenase reductase (anfH). The model excludes the homologous protein from the light-independent protochlorophyllide reductase. [Central intermediary metabolism, Nitrogen fixation]


Pssm-ID: 273538  Cd Length: 275  Bit Score: 203.00  E-value: 3.98e-67
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGSvEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVS 79
Cdd:TIGR01287  42 STRLLLGGKAQPTVLDVLREKGA-EDLELEDVIKEGFGGIRCVESGGPEPGVGCAGRGVITAINLLEELGAYeDDLDFVF 120

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:TIGR01287 121 YDVLGDVVCGGFAMPIREGKAQEIYIVTS 149
NifH/CfbC COG1348
Nitrogenase ATPase subunit NifH/coenzyme F430 biosynthesis subunit CfbC [Coenzyme transport ...
 1-108 5.48e-67

Nitrogenase ATPase subunit NifH/coenzyme F430 biosynthesis subunit CfbC [Coenzyme transport and metabolism, Inorganic ion transport and metabolism];


Pssm-ID: 440959  Cd Length: 276  Bit Score: 202.32  E-value: 5.48e-67
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGsvEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYE-DIDYVS 79
Cdd:COG1348    44 STRLLLGGKRIPTVLDTLREKG--EDVELEDIVFEGFGGVKCVEAGGPEPGVGCAGRGIITAIELLEELGAYEeDLDVVI 121

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:COG1348   122 YDVLGDVVCGGFAMPIREGYADEIYIVTS 150
NifH cd02040
nitrogenase component II NifH; NifH gene encodes component II (iron protein) of nitrogenase. ...
 1-108 1.96e-62

nitrogenase component II NifH; NifH gene encodes component II (iron protein) of nitrogenase. Nitrogenase is responsible for the biological nitrogen fixation, i.e. reduction of molecular nitrogen to ammonia. NifH consists of two oxygen-sensitive metallosulfur proteins: the mollybdenum-iron (alternatively, vanadium-iron or iron-iron) protein (commonly referred to as component 1), and the iron protein (commonly referred to as component 2). The iron protein is a homodimer, with an Fe4S4 cluster bound between the subunits and two ATP-binding domains. It supplies energy by ATP hydrolysis, and transfers electrons from reduced ferredoxin or flavodoxin to component 1 for the reduction of molecular nitrogen to ammonia.


Pssm-ID: 349759  Cd Length: 265  Bit Score: 190.42  E-value: 1.96e-62
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGsvEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVS 79
Cdd:cd02040    42 STRLLLGGKAIPTVLDTLREKG--EVEELEDVIKEGFNGIKCVESGGPEPGVGCAGRGIITAINLLEELGAYeEDLDVVF 119

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:cd02040   120 YDVLGDVVCGGFAMPIREGYADEVYIVTS 148
Fer4_NifH pfam00142
4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family;
1-108 3.06e-61

4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family;


Pssm-ID: 395090  Cd Length: 271  Bit Score: 187.65  E-value: 3.06e-61
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGSVEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYEDIDYVSY 80
Cdd:pfam00142  42 STRLLLGGKLQPTVLDTAREKGYVEDVEVEDVVYKGYGGVKCVESGGPEPGVGCAGRGVITAINLLEELGAYDDLDFVLY 121

                          90       100
                  ....*....|....*....|....*...
gi 1395434131  81 DVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:pfam00142 122 DVLGDVVCGGFAMPIREGKAQEIYIVTS 149
nifH PRK13233
nitrogenase iron protein;
1-108 1.55e-52

nitrogenase iron protein;


Pssm-ID: 183905  Cd Length: 275  Bit Score: 165.76  E-value: 1.55e-52
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGSvEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVS 79
Cdd:PRK13233   45 STRLILGGKPQTTMMDTLRELGE-EKVTPDKVIKTGFKDIRCVESGGPEPGVGCAGRGVITAIDLMEENGAYtDDLDFVF 123

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:PRK13233  124 FDVLGDVVCGGFAMPIRDGKAQEVYIVAS 152
F430_CfbC NF033200
Ni-sirohydrochlorin a,c-diamide reductive cyclase ATP-dependent reductase subunit; This family, ...
 1-108 1.62e-47

Ni-sirohydrochlorin a,c-diamide reductive cyclase ATP-dependent reductase subunit; This family, very closely related to the nitrogenase iron protein, was identified as a subunit involved in biosynthesis of coenzyme F430 in archaeal methanogens and archaeal anaerobic methanotrophs.


Pssm-ID: 380202  Cd Length: 260  Bit Score: 152.34  E-value: 1.62e-47
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGsveDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVS 79
Cdd:NF033200   42 STRTLMGGRRIPTILDLLRENK---NIKEEDVVFEGYGGVRCVESGGPEPGVGCAGRGIIVAMQLLEKLGAFmEDLDVII 118

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:NF033200  119 YDVLGDVVCGGFAVPLREGYADEVYIVTS 147
NifH-like cd02117
NifH family; This family contains the NifH (iron protein) of nitrogenase, L subunit (BchL/ChlL) ...
 1-108 2.58e-43

NifH family; This family contains the NifH (iron protein) of nitrogenase, L subunit (BchL/ChlL) of the protochlorophyllide reductase, and the BchX subunit of the Chlorophyllide reductase. Members of this family use energy from ATP hydrolysis and transfer electrons through a Fe4-S4 cluster to other subunit for substrate reduction


Pssm-ID: 349761  Cd Length: 266  Bit Score: 141.73  E-value: 2.58e-43
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAANAGSVEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYED-IDYVS 79
Cdd:cd02117    42 STLLLTGGKVPPTIDEMLTEDGTAEELRREDLLFSGFNGVDCVEAGGPEPGVGCGGRGIGTMLELLEEHGLLDDdYDVVI 121

                          90       100
                  ....*....|....*....|....*....
gi 1395434131  80 YDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:cd02117   122 FDVLGDVVCGGFAAPLRRGFAQKVVIVVS 150
PRK13230 PRK13230
nitrogenase reductase-like protein; Reviewed
 1-108 1.38e-34

nitrogenase reductase-like protein; Reviewed


Pssm-ID: 183903  Cd Length: 279  Bit Score: 119.88  E-value: 1.38e-34
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAqDTILSLAANAGsVEDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYEDI--DYV 78
Cdd:PRK13230   43 CTRNLVGEKI-PTVLDVLREKG-IDNLGLEDIIYEGFNGIYCVESGGPEPGYGCAGRGVITAIDLLKKLGVFEELgpDVV 120

                          90       100       110
                  ....*....|....*....|....*....|
gi 1395434131  79 SYDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:PRK13230  121 IYDILGDVVCGGFAMPLQKGLADDVYIVTT 150
PRK13231 PRK13231
nitrogenase reductase-like protein; Reviewed
 28-108 3.29e-34

nitrogenase reductase-like protein; Reviewed


Pssm-ID: 183904  Cd Length: 264  Bit Score: 118.36  E-value: 3.29e-34
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131  28 EIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAY-EDIDYVSYDVLGDVVCGGFAMPIRENKAQEIYIV 106
Cdd:PRK13231   66 ELEDIIHEGFNGILCVESGGPEPGVGCAGRGVIVAMNLLENLGVFdEDIDVVIYDVLGDVVCGGFSVPLREDYADEVYIV 145


                  ..
gi 1395434131 107 MS 108
Cdd:PRK13231  146 TS 147
Bchl-like cd02032
L-subunit of protochlorophyllide reductase; This family of proteins contains BchL and ChlL. ...
 25-106 5.00e-24

L-subunit of protochlorophyllide reductase; This family of proteins contains BchL and ChlL. Protochlorophyllide reductase catalyzes the reductive formation of chlorophyllide from protochlorophyllide during biosynthesis of chlorophylls and bacteriochlorophylls. Three genes, bchL, bchN and bchB, are involved in light-independent protochlorophyllide reduction in bacteriochlorophyll biosynthesis. In cyanobacteria, algae, and gymnosperms, three similar genes, chlL, chlN and chlB are involved in protochlorophyllide reduction during chlorophylls biosynthesis. BchL/chlL, bchN/chlN and bchB/chlB exhibit significant sequence similarity to the nifH, nifD and nifK subunits of nitrogenase, respectively. Nitrogenase catalyzes the reductive formation of ammonia from dinitrogen.


Pssm-ID: 349752  Cd Length: 267  Bit Score: 91.98  E-value: 5.00e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131  25 EDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYEDIDYVSYDVLGDVVCGGFAMPIreNKAQEIY 104
Cdd:cd02032    66 EEVWPEDVIFTGYGGVDCVEAGGPPAGTGCGGYVVGETVKLLKELNAFDEYDVILFDVLGDVVCGGFAAPL--NYADYCL 143


                  ..
gi 1395434131 105 IV 106
Cdd:cd02032   144 IV 145
chlL PRK13185
protochlorophyllide reductase iron-sulfur ATP-binding protein; Provisional
 25-95 3.27e-23

protochlorophyllide reductase iron-sulfur ATP-binding protein; Provisional


Pssm-ID: 237293  Cd Length: 270  Bit Score: 90.02  E-value: 3.27e-23
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1395434131  25 EDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYEDIDYVSYDVLGDVVCGGFAMPI 95
Cdd:PRK13185   68 EELRPEDFVYEGYNGVDCVEAGGPPAGTGCGGYVVGETVKLLKEHHLLDDYDVILFDVLGDVVCGGFAAPL 138
chlL CHL00072
photochlorophyllide reductase subunit L
 25-95 4.88e-18

photochlorophyllide reductase subunit L


Pssm-ID: 177011  Cd Length: 290  Bit Score: 76.70  E-value: 4.88e-18
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1395434131  25 EDLEIEDVMKVGYRDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYEDIDYVSYDVLGDVVCGGFAMPI 95
Cdd:CHL00072   66 EDVWPEDVIYKGYGGVDCVEAGGPPAGAGCGGYVVGETVKLLKELNAFYEYDIILFDVLGDVVCGGFAAPL 136
BchX cd02033
X-subunit of protochlorophyllide reductase; Chlorophyllide reductase converts chlorophylls ...
 1-108 5.79e-17

X-subunit of protochlorophyllide reductase; Chlorophyllide reductase converts chlorophylls into bacteriochlorophylls by reducing the chlorin B-ring. This family contains the X subunit of this three-subunit enzyme. Sequence and structure similarity between bchX, protochlorophyllide reductase L subunit (bchL and chlL) and nitrogenase Fe protein (nifH gene) suggest their functional similarity. Members of the BchX family serve as the unique electron donors to their respective catalytic subunits (bchN-bchB, bchY-bchZ and nitrogenase component 1). Mechanistically, they hydrolyze ATP and transfer electrons through a Fe4-S4 cluster.


Pssm-ID: 349753  Cd Length: 329  Bit Score: 74.10  E-value: 5.79e-17
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1395434131   1 STRLILHAKAQDTILSLAAN---AGsvEDLEIEDV-MKVGyrDIRCVESGGPEPGVGCAGRGVITSINFLEENGAYE-DI 75
Cdd:cd02033    73 TTSLLFGGKACPTIIETSTRkklAG--EEVKIGDVcFKRG--GVFAMELGGPEVGRGCGGRGIIHGFELLEKLGFHDwGF 148

                          90       100       110
                  ....*....|....*....|....*....|...
gi 1395434131  76 DYVSYDVLGDVVCGGFAMPIRENKAQEIYIVMS 108
Cdd:cd02033   149 DYVLLDFLGDVVCGGFGLPIARDMCQKVIVVGS 181
 
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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