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EC 1.17.98.2 Details
show Brenda entryEC number
1.17.98.2
Accepted name
bacteriochlorophyllide c C-71-hydroxylase
Reaction
2 S-adenosyl-L-methionine + a bacteriochlorophyllide c + H2O = a bacteriochlorophyllide e + 2 5′-deoxyadenosine + 2 L-methionine (overall reaction);;(1a) S-adenosyl-L-methionine + a bacteriochlorophyllide c + H2O = a 7-(hydroxymethyl)bacteriochlorophyllide c + 5′-deoxyadenosine + L-methionine;;(1b) S-adenosyl-L-methionine + a 7-(hydroxymethyl)bacteriochlorophyllide c + H2O = a 7-(dihydroxymethyl)bacteriochlorophyllide c + 5′-deoxyadenosine + L-methionine;;(1c) a 7-(dihydroxymethyl)bacteriochlorophyllide c = a bacteriochlorophyllide e + H2O (spontaneous)
Other name(s)
bciD (gene name)
Systematic name
bacteriochlorophyllide-c:S-adenosyl-L-methionine oxidoreductase (C-71-hydroxylating)
Comment
The enzyme, found in green sulfur bacteria (Chlorobiaceae), is a radical S-adenosyl-L-methionine (AdoMet) enzyme and contains a [4Fe-4S] cluster. It catalyses two consecutive hydroxylation reactions of the C-7 methyl group of bacteriochlorophyllide c to form a geminal diol intermediate that spontaneously dehydrates to produce the formyl group of bacteriochlorophyllide e.
History
created 2016, modified 2017
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1 Oxidoreductases
1.1 Acting on the CH-OH group of donors
1.6.2.1 created 1961, deleted 1965 1.6.2.3 created 1972, deleted 1965
