The enzyme catalyses the addition of a geranylgeranyl hydrophobic chain to bacteriochlorophyllide a via an ester bond with the 17-propionate residue. The side chain is later modified to a phytyl chain, resulting in bacteriochlorophyll a.
Oster, U., Bauer, C.E. and Rüdiger, W. Characterization of chlorophyll a and bacteriochlorophyll a synthases by heterologous expression in Escherichia coli. J. Biol. Chem.272 (1997) 9671–9676. [DOI] [PMID: 9092496]
Addlesee, H.A., Fiedor, L. and Hunter, C.N. Physical mapping of bchG, orf427, and orf177 in the photosynthesis gene cluster of Rhodobacter sphaeroides: functional assignment of the bacteriochlorophyll synthetase gene. J. Bacteriol.182 (2000) 3175–3182. [DOI] [PMID: 10809697]
Garcia-Gil, L.J., Gich, F.B. and Fuentes-Garcia, X. A comparative study of bchG from green photosynthetic bacteria. Arch. Microbiol.179 (2003) 108–115. [DOI] [PMID: 12560989]
Saga, Y., Hirota, K., Harada, J. and Tamiaki, H. In vitro enzymatic activities of bacteriochlorophyll a synthase derived from the green sulfur photosynthetic bacterium Chlorobaculum tepidum. Biochemistry54 (2015) 4998–5005. [DOI] [PMID: 26258685]