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EC 4.2.1.152 Details
EC number
4.2.1.152
Accepted name
hydroperoxy icosatetraenoate dehydratase
Reaction
a hydroperoxyicosatetraenoate = an oxoicosatetraenoate + H2O
Other name(s)
epidermal lipoxygenase-3 (ambiguous), eLOX3 (ambiguous)
Systematic name
hydroperoxyicosatetraenoate hydro-lyase (oxoicosatetraenoate-forming)
Comment
Binds Fe2+. The mammalian enzymes accept a range of hydroperoxyicosatetraenoates (HPETE). The human enzyme has highest activity with (12R)-HPETE, followed by (12S)-HPETE and (15R)-HPETE with much lower efficiency. The murine enzyme has highest activity with (8R)-HPETE followed by (8S)-HPETE. All HPETE isoforms are converted to the corresponding oxoicosatetraenoate forms (KETE) [2]. The enzymes also catalyse the reaction of EC 5.4.4.7, hydroperoxy icosatetraenoate isomerase.
History
created 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