The amino acid aspartate lies at the base of the substrate specificity pocket (S, pocket) in the enzyme trypsin. a. How is this related to trypsin's substrate specificity? What kinds of interactions take place between the aspartate and the amino acid side chain on the carboxyl side of the scissile bond? b. In a mutagenesis study, aspartate was replaced by lysine. How do you think this would affect substrate specificity?

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