the inhibition by 7-oxa-13-prostynoic acid and by prostaglandin a ( 1 ) overrides enzyme activation produced by either escherichia coli enterotoxin , prostaglandin e ( 1 ) , or sodium fluoride , suggesting that in intestinal adenylate cyclase this site is the primary regulatory site ( i.e. , primary allosteric effector site ) for enzyme activity .
C0033554
prostaglandin
C0033559
prostaglandin e