A novel class of mechanism-based inhibitors of the serine proteases is developed using epitaxial selection. Tripeptide boronates esterified by an alcohol or alcohols at the boron retain the tight binding to trypsin-like enzymes associated with transition-state analogs and incorporate additional groups that can be utilized for selectivity between proteases ...
A novel class of mechanism-based inhibitors of the serine proteases is developed using epitaxial selection. Tripeptide boronates esterified by an alcohol or alcohols at the boron retain the tight binding to trypsin-like enzymes associated with transition-state analogs and incorporate additional groups that can be utilized for selectivity between proteases. Formed by reaction of a series of alcohols with the inhibitor boronate oxygen(s), the most structurally compatible alcohol-derivatized inhibitors are either selected by binding to the enzyme (epitaxial selection) or assembled by epitaxial reaction on the enzyme surface. Mass spectrometry of the derivatized boronates and X-ray crystallography of the complexes identify the chemical structures and the three-dimensional interactions of inhibitors generated. This scheme also engineers novel, potent (Ki approximately 7 nM), and more specific inhibitors of individual serine proteases, by derivitizations of compounds obtained by epitaxial selection.
Related Citations:
Solvent Structure in Crystals of Trypsin Determined by X-Ray and Neutron Diffraction Finer-Moore, J.S., Kossiakoff, A., Hurley, J.H., Earnest, T., Stroud, R.M. (1992) Proteins 12: 203
1.59 Angstrom Structure of Trypsin at 120K: Comparison of Low Temperature and Room Temperature Structures Earnest, T., Fauman, E., Craik, C.S., Stroud, R.M. (1991) Proteins 10: 171
Difference Fourier Refinement of the Structure of Dip-Trypsin at 1.5 Angstroms Using a Minicomputer Technique Chambers, J.L., Stroud, R.M. (1977) Acta Crystallogr B 33: 1824
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Organizational Affiliation:
Arris Pharmaceutical Corporation, South San Francisco, California 94080, USA.
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