these properties included ( i ) inhibition by phenylalkylamine antagonists , such as verapamil , ( ii ) inhibition by the gtp-binding protein go in the presence of guanosine 5'- [ gamma-thio ] triphosphate , and ( iii ) regulation of phenylalkylamine inhibition as a result of phosphorylation by a polypeptide-dependent protein kinase ( pk-p ) .
C0031715
phosphorylation
C0033640
protein