The subsites structure of bovine pancreatic ribonuclease A accounts for the abnormal kinetic behavior with cytidine 2',3'-cyclic phosphate.

Abstract excerpt

The kinetics of the hydrolysis of cytidine 2',3'-cyclic phosphate (C>p) to 3'-CMP by ribonuclease A are multiphasic at high substrate concentrations. We have investigated these kinetics by determining 3'-CMP formation both spectrophotometrically and by a highly specific and quantitative chemical sampling method. With the use of RNase A derivatives that lack a functional p2 binding subsite, evidence is presented...

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