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A biocatalytic route to the 'post-synthesis' formation of Asp/Glu-derived isopeptides is illustrated on the basis of the Staphylococcus aureus V8 protease used as the biocatalyst, a new type of substrate mimetics as the donor peptides, and several acceptor peptides varying in length and sequence.
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Wehofsky et al. (2001) studied this question.
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