ID 2.1.1.333 DE bacteriochlorophyllide d C-20 methyltransferase. CA a bacteriochlorophyllide d + S-adenosyl-L-methionine = CA a bacteriochlorophyllide c + H(+) + S-adenosyl-L-homocysteine. CC -!- The enzyme, found in green sulfur bacteria (Chlorobiaceae) and green CC flimentous bacteria (Chloroflexaceae), catalyzes the methylation of CC the C-20 methine bridge position in bacteriochlorophyllide d, forming CC bacteriochlorophyllide c. DR Q8KGE0, BCHU_CHLTE ; //