S-adenosyl-L-methionine + 8-ethyl-12-methyl-3-vinylbacteriochlorophyllide d = S-adenosyl-L-homocysteine + 8,12-diethyl-3-vinylbacteriochlorophyllide d [RN:R11507]
S-adenosyl-L-methionine [CPD:C00019];
8-ethyl-12-methyl-3-vinylbacteriochlorophyllide d [CPD:C18157]
Product
S-adenosyl-L-homocysteine [CPD:C00021];
8,12-diethyl-3-vinylbacteriochlorophyllide d [CPD:C21427]
Comment
This enzyme, found in green sulfur bacteria (Chlorobiaceae) and green flimentous bacteria (Chloroflexaceae), is a radical S-adenosyl-L-methionine (AdoMet) enzyme and contains a [4Fe-4S] cluster. It adds a methyl group at the C-121 position of bacteriochlorophylls of the c, d and e types. This methylation plays a role in fine-tuning the structural arrangement of the bacteriochlorophyll aggregates in chlorosomes and therefore directly influences the chlorosomes absorption properties.
