8,12-diethyl-3-vinylbacteriochlorophyllide d + S-adenosyl-L-methionine = 12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d + S-adenosyl-L-homocysteine + H(+)
8,12-diethyl-3-vinylbacteriochlorophyllide d + s-adenosyl-l-methionine = 12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d + s-adenosyl-l-homocysteine + h(+)
8,12-diethyl-3-vinylbacteriochlorophyllide d + S-adenosyl-L-methionine = 12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d + S-adenosyl-L-homocysteine + H(+)
8,12-diethyl-3-vinylbacteriochlorophyllide d + s-adenosyl-l-methionine = 12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d + s-adenosyl-l-homocysteine + h(+)