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EC 1.14.15.36 Details
show Brenda entryEC number
1.14.15.36
Accepted name
sterol 14α-demethylase (ferredoxin)
Reaction
a 14α-methylsteroid + 6 reduced ferredoxin [iron-sulfur] cluster + 6 H+ + 3 O2 = a Δ14-steroid + formate + 6 oxidized ferredoxin [iron-sulfur] cluster + 4 H2O (overall reaction);;(1a) a 14α-methylsteroid + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 = a 14α-hydroxymethylsteroid + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O;;(1b) a 14α-hydroxymethylsteroid + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 = a 14α-formylsteroid + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O;;(1c) a 14α-formylsteroid + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 = a Δ14-steroid + formate + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O;;
Other name(s)
cyp51 (gene name)
Systematic name
sterol,reduced ferredoxin:oxygen oxidoreductase (14-methyl cleaving)
Comment
A cytochrome P-450 (heme-thiolate) protein found in several bacterial species. The enzyme, which is involved in sterol biosynthesis, catalyses a hydroxylation and a reduction of the 14α-methyl group, followed by a second hydroxylation, resulting in the elimination of formate and formation of a 14(15) double bond. The enzyme from Methylococcus capsulatus is fused to the ferredoxin by an alanine-rich linker. cf. EC 1.14.14.154, sterol 14α-demethylase.
History
created 2019
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1 Oxidoreductases
1.1 Acting on the CH-OH group of donors
1.6.7.1 created 1972, deleted 1978 1.6.7.2 created 1972, deleted 1978 1.6.7.3 created 1978, deleted 1978 1.14.99.5 created 1972, modified 1986, modified 2000, deleted 2000 1.14.99.6 created 1972, modified 2000, deleted 2000 1.14.99.8 created 1972, deleted 1984 1.14.99.13 created 1972, deleted 1984 1.14.99.16 created 1972, deleted 2002 1.14.99.17 created 1972, deleted 1976 1.14.99.18 created 1976, modified 1999, deleted 2003 1.14.99.25 created 1986, deleted 2000
