. "\"Catalysis of the reaction: arachidonate + O2 = (6E,8Z,11Z,14Z)-(5S)-5-hydroperoxycosa-6,8,11,14-tetraenoate.\" [EC:1.13.11.34]" . . "arachidonate 5-lipoxygenase activity" . "5-delta-lipoxygenase activity" . "5-lipoxygenase activity" . "5Delta-lipoxygenase activity" . "arachidonate:oxygen 5-oxidoreductase activity" . "arachidonic 5-lipoxygenase activity" . "arachidonic acid 5-lipoxygenase activity" . "delta5-lipoxygenase activity" . "leukotriene-A4 synthase activity" . "EC:1.13.11.34" . "MetaCyc:ARACHIDONATE-5-LIPOXYGENASE-RXN" . "Reactome:REACT_101081 \"Oxidation of arachidonic acid to 5-HpETE, Sus scrofa\"" . "Reactome:REACT_102776 \"Dehydration of 5-HpETE to leukotriene A4, Bos taurus\"" . "Reactome:REACT_104725 \"Dehydration of 5-HpETE to leukotriene A4, Gallus gallus\"" . "Reactome:REACT_107795 \"Oxidation of arachidonic acid to 5-HpETE, Gallus gallus\"" . "Reactome:REACT_107991 \"Dehydration of 5-HpETE to leukotriene A4, Rattus norvegicus\"" . "Reactome:REACT_109247 \"Oxidation of arachidonic acid to 5-HpETE, Rattus norvegicus\"" . "Reactome:REACT_110901 \"Oxidation of arachidonic acid to 5-HpETE, Danio rerio\"" . "Reactome:REACT_113814 \"Dehydration of 5-HpETE to leukotriene A4, Dictyostelium discoideum\"" . "Reactome:REACT_115370 \"Oxidation of arachidonic acid to 5-HpETE, Dictyostelium discoideum\"" . "Reactome:REACT_15337 \"Oxidation of arachidonic acid to 5-HpETE, Homo sapiens\"" . "Reactome:REACT_15453 \"Dehydration of 5-HpETE to leukotriene A4, Homo sapiens\"" . "Reactome:REACT_28749 \"Oxidation of arachidonic acid to 5-HpETE, Canis familiaris\"" . "Reactome:REACT_76963 \"Dehydration of 5-HpETE to leukotriene A4, Canis familiaris\"" . "Reactome:REACT_77245 \"Oxidation of arachidonic acid to 5-HpETE, Taeniopygia guttata\"" . "Reactome:REACT_78626 \"Oxidation of arachidonic acid to 5-HpETE, Xenopus tropicalis\"" . "Reactome:REACT_79548 \"Dehydration of 5-HpETE to leukotriene A4, Danio rerio\"" . "Reactome:REACT_80928 \"Oxidation of arachidonic acid to 5-HpETE, Mus musculus\"" . "Reactome:REACT_84095 \"Dehydration of 5-HpETE to leukotriene A4, Taeniopygia guttata\"" . "Reactome:REACT_84894 \"Dehydration of 5-HpETE to leukotriene A4, Sus scrofa\"" . "Reactome:REACT_87806 \"Dehydration of 5-HpETE to leukotriene A4, Xenopus tropicalis\"" . "Reactome:REACT_90210 \"Oxidation of arachidonic acid to 5-HpETE, Bos taurus\"" . "Reactome:REACT_99738 \"Dehydration of 5-HpETE to leukotriene A4, Mus musculus\"" . "RHEA:24751" . . "C-5-lipoxygenase activity" . "delta(5)-lipoxygenase activity" . "leukotriene-A(4) synthase activity" . "LTA synthase activity" . "leukotriene A4 synthase" .