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UniProt functional annotation for Q9RFD6 | ||
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| UniProt code: Q9RFD6. |
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| Organism: | |
Rhodobacter sphaeroides (strain ATCC 17023 / DSM 158 / JCM 6121 / NBRC 12203 / NCIMB 8253 / ATH 2.4.1.) (Cereibacter sphaeroides). |
| Taxonomy: | |
Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales; Rhodobacteraceae; Luteovulum. |
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| Function: | |
Component of the dark-operative protochlorophyllide reductase (DPOR) that uses Mg-ATP and reduced ferredoxin to reduce ring D of protochlorophyllide (Pchlide) to form chlorophyllide a (Chlide). This reaction is light-independent. The L component serves as a unique electron donor to the NB-component of the complex, and binds Mg-ATP. {ECO:0000255|HAMAP-Rule:MF_00355, ECO:0000269|PubMed:19006326}. |
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| Catalytic activity: | |
Reaction=2 ADP + chlorophyllide a + oxidized 2[4Fe-4S]-[ferredoxin] + 2 phosphate = 2 ATP + 2 H2O + protochlorophyllide a + reduced 2[4Fe- 4S]-[ferredoxin]; Xref=Rhea:RHEA:28202, Rhea:RHEA-COMP:10002, Rhea:RHEA-COMP:10004, ChEBI:CHEBI:15377, ChEBI:CHEBI:30616, ChEBI:CHEBI:33722, ChEBI:CHEBI:33723, ChEBI:CHEBI:43474, ChEBI:CHEBI:83348, ChEBI:CHEBI:83350, ChEBI:CHEBI:456216; EC=1.3.7.7; Evidence={ECO:0000255|HAMAP-Rule:MF_00355}; |
| Cofactor: | |
Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883; Evidence={ECO:0000255|HAMAP-Rule:MF_00355, ECO:0000269|PubMed:19006326}; Note=Binds 1 [4Fe-4S] cluster per dimer. {ECO:0000255|HAMAP- Rule:MF_00355, ECO:0000269|PubMed:19006326}; |
| Pathway: | |
Porphyrin-containing compound metabolism; bacteriochlorophyll biosynthesis (light-independent). {ECO:0000255|HAMAP-Rule:MF_00355}. |
| Subunit: | |
Homodimer (PubMed:19006326). Protochlorophyllide reductase is composed of three subunits; BchL, BchN and BchB. {ECO:0000255|HAMAP- Rule:MF_00355, ECO:0000269|PubMed:19006326}. |
| Similarity: | |
Belongs to the NifH/BchL/ChlL family. {ECO:0000255|HAMAP- Rule:MF_00355}. |
Annotations taken from UniProtKB at the EBI.