Term Name:	arachidonate 12(S)-lipoxygenase activity
Synonyms:	12-lipoxygenase activity, 12Delta-lipoxygenase activity, 12S-lipoxygenase activity, arachidonate:oxygen 12-oxidoreductase activity, C-12 lipoxygenase activity, delta12-lipoxygenase activity, leukotriene A4 synthase, LTA4 synthase activity
Definition:	Catalysis of the reaction: arachidonate + O2 = (5Z,8Z,10E,12S,14Z)-12-hydroperoxyicosa-5,8,10,14-tetraenoate.
Ontology:	GO: Molecular Function [GO:0004052]    QuickGO    AmiGO