Protein-protein interactions: additivity of the free energies of association of amino acid residues |
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Authors: | A Horovitz M Rigbi |
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Affiliation: | Department of Biological Chemistry, Institute of Life Sciences, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel |
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Abstract: | Additivity of contributions to the free energies of association of ovomucoid third domain inhibitors with elastase, chymotrypsin and subtilisin (Laskowski, 1980; Laskowski et al., 1981, 1983; Empie & Laskowski, 1982) is fully demonstrated by applying the mathematical method of Free and Wilson (1964) for calculating the effects of substitutions in a family of drugs. Also demonstrated is the ability to predict the activity of third domain sequences. Sensitive regions in the contact area of inhibitor and enzyme are mapped, and a sequence is suggested for a new, more powerful and selective ovomucoid third domain inhibitor of subtilisin. |
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Keywords: | To whom all correspondence should be addressed. |
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