Studies on the reactive site of the cystatin superfamily using recombinant cystatin A mutants: Evidence that the QVVAG region is not essential for cysteine proteinase inhibitory activities

For study of the inhibition mechanism of the cystatin superfamily, cystatin A artificial mutants were obtained in which a well-conserved QVVAG region in the cystatin superfamily was changed to KVVAG or QVTAG and these mutants were then expressed in E. coli. For this, genes with these sequences were...

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