bacteriochlorophyllide d C-121-methyltransferase EC#: 2.1.1.331; ChemWhat Code: 1376617
Product Name
bacteriochlorophyllide d C-121-methyltransferase
Example Structure
Synonyms
bacteriochlorophyllide c C-121-methyltransferase, bchR
EC Number
2.1.1.331
CAS Registry Number
Comments
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.
Cofactor
iron-sulfur
History
Reactions
S-adenosyl-L-methionine + 8-ethyl-12-methyl-3-vinylbacteriochlorophyllide d = S-adenosyl-L-homocysteine + 8,12-diethyl-3- vinylbacteriochlorophyllide d.
