The constants of inhibition by the nucleotides and constituting components catalysed by intracellular "acid" (pHopt 4.7), non-specific RNAse from Asp. clavatus (EC 3.1.4.23) were determined.. All the nucleotides were found to be competitive inhibitors. The influence of composition and structure of the nucleotides on their interaction with the active site of RNAse is discussed.
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