Chemical synthesis of new trypsin, chymotrypsin and elastase inhibitors by amino-acid substitutions in a trypsin inhibitor from squash seeds (CMTI III) |
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Authors: | K Rolka G Kupryszewski U Ragnarsson J Otlewski I Krokoszynska T Wilusz |
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Affiliation: | Institute of Chemistry, University of Gdańsk, Poland. |
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Abstract: | Five new analogues of squash trypsin inhibitor CMTI III were obtained by the solid-phase method, exhibiting antitrypsin, antichymotrypsin or antielastase activity. Modification in the reactive site region changes dramatically the specificity, whereas substitution in non-contact positions facilitates the refolding of the reduced form of the peptides and does not have a significant influence on the association equilibrium constants of the inhibitor analogues with cognate enzymes. |
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