The Enzyme Database

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Accepted name: 3,8-divinyl chlorophyllide a reductase
Reaction: bacteriochlorophyllide g + 2 oxidized ferredoxin [iron-sulfur] cluster + ADP + phosphate = 3,8-divinyl chlorophyllide a + 2 reduced ferredoxin [iron-sulfur] cluster + ATP + H2O + 2 H+
For diagram of bacteriochlorophllide g biosynthesis, click here
Systematic name: bacteriochlorophyllide-g:ferredoxin C-81-oxidoreductase
Comments: The enzyme, found only in bacteriochlorophyll b-producing bacteria, catalyses the introduction of a C-8 ethylidene group. The enzyme contains a [4Fe-4S] cluster, and structurally resembles the Fe protein/MoFe protein complex of nitrogenase. It is very similar to EC, chlorophyllide a reductase, and is composed of three subunits. Two of them form the catalytic component, while the third one functions as an ATP-dependent reductase component that catalyses the electron transfer from ferredoxin to the catalytic component.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Tsukatani, Y., Yamamoto, H., Harada, J., Yoshitomi, T., Nomata, J., Kasahara, M., Mizoguchi, T., Fujita, Y. and Tamiaki, H. An unexpectedly branched biosynthetic pathway for bacteriochlorophyll b capable of absorbing near-infrared light. Sci. Rep. 3:1217 (2013). [DOI] [PMID: 23386973]
2.  Tsukatani, Y., Harada, J., Nomata, J., Yamamoto, H., Fujita, Y., Mizoguchi, T. and Tamiaki, H. Rhodobacter sphaeroides mutants overexpressing chlorophyllide a oxidoreductase of Blastochloris viridis elucidate functions of enzymes in late bacteriochlorophyll biosynthetic pathways. Sci. Rep. 5:9741 (2015). [DOI] [PMID: 25978726]
[EC created 2016]

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