1BTY image
Deposition Date 1995-05-17
Release Date 1995-10-15
Last Version Date 2024-11-13
Entry Detail
PDB ID:
1BTY
Keywords:
Title:
Crystal structure of beta-trypsin in complex with benzamidine
Biological Source:
Source Organism:
Bos taurus (Taxon ID: )
Method Details:
Experimental Method:
Resolution:
1.50 Å
R-Value Work:
0.16
R-Value Observed:
0.16
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:BETA-TRYPSIN
Gene (Uniprot):PRSS1
Chain IDs:A
Chain Length:229
Number of Molecules:1
Biological Source:Bos taurus
Primary Citation
Episelection: novel Ki approximately nanomolar inhibitors of serine proteases selected by binding or chemistry on an enzyme surface.
Biochemistry 34 8264 8280 (1995)
PMID: 7599119 DOI: 10.1021/bi00026a008

Abstact

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.

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Primary Citation of related structures