ribonuclease H2 complex
A protein complex that possesses ribonuclease H activity, in which the catalytic subunit is a member of the RNase H2 (or HII) class. For example, in Saccharomyces the complex contains Rnh201p, Rnh202p and Rnh203p.
prostaglandin H2 endoperoxidase reductase activity
Catalysis of the reaction: prostaglandin H2 + NADPH + H+ -> prostaglandin F2alpha + NADP+. This reaction is the reduction of prostaglandin H2 ((5Z,13E)-(15S)-9alpha,11alpha-Epidioxy-15-hydroxyprosta-5,13-dienoate) to prostaglandin F2alpha ((5Z,13E)-(15S)-9alpha,11alpha,15-Trihydroxyprosta-5,13-dienoate).