Article
Substitutions at the P(1) position in BPTI strongly affect the association energy with serine proteinases.
Journal of molecular biology - 4 Aug 2000
Grzesiak A, Helland R, Smalås A O, Krowarsch D, Dadlez M, Otlewski J
Abstract excerpt
The role of the S(1) subsite in trypsin, chymotrypsin and plasmin has been examined by measuring the association with seven different mutants of bovine pancreatic trypsin inhibitor (BPTI); the mutants contain Gly, Ala, Ser, Val, Leu, Arg, and Trp at the P(1) position of the reactive site. The effects of substitutions at the P(1) position on the association constants are very large, comprising seven orders of...
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