Studies on a 15-hydroxyprostaglandin dehydrogenase from human placenta. Purification and partial characterization.
A 15-dyroxyprostaglandin dehydrogenase has been purified from human placenta to apparent monodispersity. The reaction catalyzed by this enzyme is freely reversible with an equilibrium constant of approximately 6.5 times 10-8 M. The activation energy is 9900 calories per mol. The molecular weight of the enzyme determined by gel filtration is 51,500; sodium dodecyl sulfate disc gel electrophoresis gives a value of 42,000. No evidence was obtained for the existence of multiple forms of the enzyme or for subunits.
D000429:Alcohol Oxidoreductases / Q000302:isolation & purification / Q000378:metabolism*; D005260:Female; D006801:Humans; D008970:Molecular Weight; D010920:Placenta / Q000201:enzymology*; D011247:Pregnancy; D011453:Prostaglandins; D013816:Thermodynamics
D011453:Prostaglandins; D000429:Alcohol Oxidoreductases