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Conserved domains on  [gi|936369716|gb|ALH21693|]
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NifH, partial [Burkholderia sp. BL16 R3]

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
NifH/CfbC super family cl43394
Nitrogenase ATPase subunit NifH/coenzyme F430 biosynthesis subunit CfbC [Coenzyme transport ...
 1-103 2.08e-63

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


The actual alignment was detected with superfamily member COG1348:

Pssm-ID: 440959  Cd Length: 276  Bit Score: 193.08  E-value: 2.08e-63
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGsvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:COG1348   30 GKKVMQIGCDPKADSTRLLLGGKRIPTVLDTLREKG--EDVELEDIVFEGFGGVKCVEAGGPEPGVGCAGRGIITAIELL 107

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAYD-GVDYVSYDVLGDVVCG 103
Cdd:COG1348  108 EELGAYEeDLDVVIYDVLGDVVCG 131
 
Name Accession Description Interval E-value
NifH/CfbC COG1348
Nitrogenase ATPase subunit NifH/coenzyme F430 biosynthesis subunit CfbC [Coenzyme transport ...
 1-103 2.08e-63

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: 193.08  E-value: 2.08e-63
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGsvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:COG1348   30 GKKVMQIGCDPKADSTRLLLGGKRIPTVLDTLREKG--EDVELEDIVFEGFGGVKCVEAGGPEPGVGCAGRGIITAIELL 107

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAYD-GVDYVSYDVLGDVVCG 103
Cdd:COG1348  108 EELGAYEeDLDVVIYDVLGDVVCG 131
nifH TIGR01287
nitrogenase iron protein; This model describes nitrogenase (EC 1.18.6.1) iron protein, also ...
 1-103 1.02e-62

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: 191.45  E-value: 1.02e-62
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716    1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGSvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:TIGR01287  28 GKKVMIVGCDPKADSTRLLLGGKAQPTVLDVLREKGA-EDLELEDVIKEGFGGIRCVESGGPEPGVGCAGRGVITAINLL 106

                          90       100
                  ....*....|....*....|....
gi 936369716   81 EENGAY-DGVDYVSYDVLGDVVCG 103
Cdd:TIGR01287 107 EELGAYeDDLDFVFYDVLGDVVCG 130
Fer4_NifH pfam00142
4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family;
1-103 3.10e-59

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


Pssm-ID: 395090  Cd Length: 271  Bit Score: 182.26  E-value: 3.10e-59
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716    1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGSVEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:pfam00142  28 GKKVLVVGCDPKADSTRLLLGGKLQPTVLDTAREKGYVEDVEVEDVVYKGYGGVKCVESGGPEPGVGCAGRGVITAINLL 107

                          90       100
                  ....*....|....*....|...
gi 936369716   81 EENGAYDGVDYVSYDVLGDVVCG 103
Cdd:pfam00142 108 EELGAYDDLDFVLYDVLGDVVCG 130
NifH cd02040
nitrogenase component II NifH; NifH gene encodes component II (iron protein) of nitrogenase. ...
 1-103 5.84e-59

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: 181.56  E-value: 5.84e-59
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGsvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:cd02040   28 GKKVLHVGCDPKADSTRLLLGGKAIPTVLDTLREKG--EVEELEDVIKEGFNGIKCVESGGPEPGVGCAGRGIITAINLL 105

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAYD-GVDYVSYDVLGDVVCG 103
Cdd:cd02040  106 EELGAYEeDLDVVFYDVLGDVVCG 129
nifH PRK13233
nitrogenase iron protein;
1-103 1.30e-46

nitrogenase iron protein;


Pssm-ID: 183905  Cd Length: 275  Bit Score: 150.35  E-value: 1.30e-46
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGSvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:PRK13233  31 DKKVFIHGCDPKADSTRLILGGKPQTTMMDTLRELGE-EKVTPDKVIKTGFKDIRCVESGGPEPGVGCAGRGVITAIDLM 109

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAY-DGVDYVSYDVLGDVVCG 103
Cdd:PRK13233 110 EENGAYtDDLDFVFFDVLGDVVCG 133
F430_CfbC NF033200
Ni-sirohydrochlorin a,c-diamide reductive cyclase ATP-dependent reductase subunit; This family, ...
 1-103 1.14e-43

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: 142.32  E-value: 1.14e-43
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGsveDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:NF033200  28 GKKVMVIGCDPKADSTRTLMGGRRIPTILDLLRENK---NIKEEDVVFEGYGGVRCVESGGPEPGVGCAGRGIIVAMQLL 104

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAYDG-VDYVSYDVLGDVVCG 103
Cdd:NF033200 105 EKLGAFMEdLDVIIYDVLGDVVCG 128
 
Name Accession Description Interval E-value
NifH/CfbC COG1348
Nitrogenase ATPase subunit NifH/coenzyme F430 biosynthesis subunit CfbC [Coenzyme transport ...
 1-103 2.08e-63

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: 193.08  E-value: 2.08e-63
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGsvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:COG1348   30 GKKVMQIGCDPKADSTRLLLGGKRIPTVLDTLREKG--EDVELEDIVFEGFGGVKCVEAGGPEPGVGCAGRGIITAIELL 107

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAYD-GVDYVSYDVLGDVVCG 103
Cdd:COG1348  108 EELGAYEeDLDVVIYDVLGDVVCG 131
nifH TIGR01287
nitrogenase iron protein; This model describes nitrogenase (EC 1.18.6.1) iron protein, also ...
 1-103 1.02e-62

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: 191.45  E-value: 1.02e-62
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716    1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGSvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:TIGR01287  28 GKKVMIVGCDPKADSTRLLLGGKAQPTVLDVLREKGA-EDLELEDVIKEGFGGIRCVESGGPEPGVGCAGRGVITAINLL 106

                          90       100
                  ....*....|....*....|....
gi 936369716   81 EENGAY-DGVDYVSYDVLGDVVCG 103
Cdd:TIGR01287 107 EELGAYeDDLDFVFYDVLGDVVCG 130
Fer4_NifH pfam00142
4Fe-4S iron sulfur cluster binding proteins, NifH/frxC family;
1-103 3.10e-59

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


Pssm-ID: 395090  Cd Length: 271  Bit Score: 182.26  E-value: 3.10e-59
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716    1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGSVEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:pfam00142  28 GKKVLVVGCDPKADSTRLLLGGKLQPTVLDTAREKGYVEDVEVEDVVYKGYGGVKCVESGGPEPGVGCAGRGVITAINLL 107

                          90       100
                  ....*....|....*....|...
gi 936369716   81 EENGAYDGVDYVSYDVLGDVVCG 103
Cdd:pfam00142 108 EELGAYDDLDFVLYDVLGDVVCG 130
NifH cd02040
nitrogenase component II NifH; NifH gene encodes component II (iron protein) of nitrogenase. ...
 1-103 5.84e-59

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: 181.56  E-value: 5.84e-59
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGsvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:cd02040   28 GKKVLHVGCDPKADSTRLLLGGKAIPTVLDTLREKG--EVEELEDVIKEGFNGIKCVESGGPEPGVGCAGRGIITAINLL 105

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAYD-GVDYVSYDVLGDVVCG 103
Cdd:cd02040  106 EELGAYEeDLDVVFYDVLGDVVCG 129
nifH PRK13233
nitrogenase iron protein;
1-103 1.30e-46

nitrogenase iron protein;


Pssm-ID: 183905  Cd Length: 275  Bit Score: 150.35  E-value: 1.30e-46
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGSvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:PRK13233  31 DKKVFIHGCDPKADSTRLILGGKPQTTMMDTLRELGE-EKVTPDKVIKTGFKDIRCVESGGPEPGVGCAGRGVITAIDLM 109

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAY-DGVDYVSYDVLGDVVCG 103
Cdd:PRK13233 110 EENGAYtDDLDFVFFDVLGDVVCG 133
NifH-like cd02117
NifH family; This family contains the NifH (iron protein) of nitrogenase, L subunit (BchL/ChlL) ...
 1-103 8.42e-44

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: 142.89  E-value: 8.42e-44
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGSVEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:cd02117   28 GKKVLHVGCDPKHDSTLLLTGGKVPPTIDEMLTEDGTAEELRREDLLFSGFNGVDCVEAGGPEPGVGCGGRGIGTMLELL 107

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAY-DGVDYVSYDVLGDVVCG 103
Cdd:cd02117  108 EEHGLLdDDYDVVIFDVLGDVVCG 131
F430_CfbC NF033200
Ni-sirohydrochlorin a,c-diamide reductive cyclase ATP-dependent reductase subunit; This family, ...
 1-103 1.14e-43

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: 142.32  E-value: 1.14e-43
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGsveDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:NF033200  28 GKKVMVIGCDPKADSTRTLMGGRRIPTILDLLRENK---NIKEEDVVFEGYGGVRCVESGGPEPGVGCAGRGIIVAMQLL 104

                         90       100
                 ....*....|....*....|....
gi 936369716  81 EENGAYDG-VDYVSYDVLGDVVCG 103
Cdd:NF033200 105 EKLGAFMEdLDVIIYDVLGDVVCG 128
PRK13230 PRK13230
nitrogenase reductase-like protein; Reviewed
 1-103 1.66e-35

nitrogenase reductase-like protein; Reviewed


Pssm-ID: 183903  Cd Length: 279  Bit Score: 121.80  E-value: 1.66e-35
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAqDTILSLAAEAGsVEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:PRK13230  29 GKKVLVVGCDPKADCTRNLVGEKI-PTVLDVLREKG-IDNLGLEDIIYEGFNGIYCVESGGPEPGYGCAGRGVITAIDLL 106

                         90       100
                 ....*....|....*....|....*
gi 936369716  81 EENGAYD--GVDYVSYDVLGDVVCG 103
Cdd:PRK13230 107 KKLGVFEelGPDVVIYDILGDVVCG 131
PRK13231 PRK13231
nitrogenase reductase-like protein; Reviewed
 3-103 2.39e-30

nitrogenase reductase-like protein; Reviewed


Pssm-ID: 183904  Cd Length: 264  Bit Score: 108.35  E-value: 2.39e-30
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   3 KILIVGCDPKADSTRlILHAKAQDTILSLAAEAgsvEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFLEE 82
Cdd:PRK13231  31 RVLVIGCDPKADTTR-TLCGKRIPTVLDTLKDN---RKPELEDIIHEGFNGILCVESGGPEPGVGCAGRGVIVAMNLLEN 106

                         90       100
                 ....*....|....*....|..
gi 936369716  83 NGAYDG-VDYVSYDVLGDVVCG 103
Cdd:PRK13231 107 LGVFDEdIDVVIYDVLGDVVCG 128
Bchl-like cd02032
L-subunit of protochlorophyllide reductase; This family of proteins contains BchL and ChlL. ...
 1-103 9.78e-27

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: 98.91  E-value: 9.78e-27
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGSVEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:cd02032   28 GKKVLQIGCDPKHDSTFTLTGFLIPTVIDVLQSVDFHYEEVWPEDVIFTGYGGVDCVEAGGPPAGTGCGGYVVGETVKLL 107

                         90       100
                 ....*....|....*....|...
gi 936369716  81 EENGAYDGVDYVSYDVLGDVVCG 103
Cdd:cd02032  108 KELNAFDEYDVILFDVLGDVVCG 130
chlL PRK13185
protochlorophyllide reductase iron-sulfur ATP-binding protein; Provisional
 1-103 2.75e-25

protochlorophyllide reductase iron-sulfur ATP-binding protein; Provisional


Pssm-ID: 237293  Cd Length: 270  Bit Score: 95.03  E-value: 2.75e-25
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTrLILHAKAQDTILSLAAEAG-SVEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINF 79
Cdd:PRK13185  30 GKKVLQIGCDPKHDST-FTLTGKLVPTVIDILEEVDfHSEELRPEDFVYEGYNGVDCVEAGGPPAGTGCGGYVVGETVKL 108

                         90       100
                 ....*....|....*....|....
gi 936369716  80 LEENGAYDGVDYVSYDVLGDVVCG 103
Cdd:PRK13185 109 LKEHHLLDDYDVILFDVLGDVVCG 132
chlL CHL00072
photochlorophyllide reductase subunit L
 1-103 2.90e-21

photochlorophyllide reductase subunit L


Pssm-ID: 177011  Cd Length: 290  Bit Score: 84.79  E-value: 2.90e-21
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAEAGSVEDLELEDVMKIGYRNIRCVESGGPEPGVGCAGRGVITSINFL 80
Cdd:CHL00072  28 GKKVLQIGCDPKHDSTFTLTGFLIPTIIDTLQSKDYHYEDVWPEDVIYKGYGGVDCVEAGGPPAGAGCGGYVVGETVKLL 107

                         90       100
                 ....*....|....*....|...
gi 936369716  81 EENGAYDGVDYVSYDVLGDVVCG 103
Cdd:CHL00072 108 KELNAFYEYDIILFDVLGDVVCG 130
BchX cd02033
X-subunit of protochlorophyllide reductase; Chlorophyllide reductase converts chlorophylls ...
 1-103 3.28e-19

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: 79.88  E-value: 3.28e-19
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 936369716   1 GQKILIVGCDPKADSTRLILHAKAQDTILSLAAE---AGsvEDLELEDV-MKIGyrNIRCVESGGPEPGVGCAGRGVITS 76
Cdd:cd02033   59 GKRVLLIGCDPKSDTTSLLFGGKACPTIIETSTRkklAG--EEVKIGDVcFKRG--GVFAMELGGPEVGRGCGGRGIIHG 134

                         90       100
                 ....*....|....*....|....*...
gi 936369716  77 INFLEENGAYD-GVDYVSYDVLGDVVCG 103
Cdd:cd02033  135 FELLEKLGFHDwGFDYVLLDFLGDVVCG 162
 
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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