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EC Explorer

EC 4.2.1.121 Details
EC number
4.2.1.121
Accepted name
colneleate synthase
Reaction
(9S,10E,12Z)-9-hydroperoxyoctadeca-10,12-dienoate = (8E)-9-[(1E,3Z)-nona-1,3-dien-1-yloxy]non-8-enoate + H2O
Other name(s)
9-divinyl ether synthase, 9-DES, CYP74D, CYP74D1, CYP74 cytochrome P-450, DES1, (8E)-9-[(1E,3E)-nona-1,3-dien-1-yloxy]non-8-enoate synthase
Systematic name
(9S,10E,12Z)-9-hydroperoxyoctadeca-10,12-dienoate hydro-lyase
Comment
A heme-thiolate protein (P-450) [2]. It catalyses the selective removal of pro-R hydrogen at C-8 in the biosynthesis of colneleic acid [4]. It forms also (8E)-9-[(1E,3Z,6Z)-nona-1,3,6-trien-1-yloxy]non-8-enoic acid (i.e. colnelenate) from (9S,10E,12Z,15Z)-9-hydroperoxy-10,12,15-octadecatrienoate. The corresponding 13-hydroperoxides are poor substrates [1,3]. The divinyl ethers colneleate and colnelenate have antimicrobial activity.
History
created 2011, modified 2014
EC Tree
4.2.1.13 created 1961, deleted 2001
4.2.1.14 created 1961, deleted 2001
4.2.1.15 created 1961, deleted 1972
4.2.1.16 created 1961, deleted 2001
4.2.1.21 created 1961, deleted 1964
4.2.1.23 created 1961, deleted 1972
4.2.1.26 created 1965, deleted 2002
4.2.1.29 created 1965, deleted 2004
4.2.1.37 created 1972, deleted 1992
4.2.1.38 created 1972, deleted 2001
4.2.1.63 created 1972, deleted 1978
4.2.1.64 created 1972, deleted 1978
4.2.1.71 created 1978, modified 1989, modified 2000, deleted 2004
4.2.1.72 created 1978, deleted 2000
4.2.1.86 created 1989, deleted 2004
4.2.1.102 created 2001, deleted 2001