Reaction catalyzed by prostaglandin-endoperoxide synthase (1.14.99.1)
+
AH2
+
2
=
+
A
+
H2O
arachidonic acid
+
AH2
+
2 O2
=
15-hydroperoxy-9alpha,11alpha-peroxidoprosta-5,13-dienoic acid
+
A
+
H2O
