1tps

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{{STRUCTURE_1tps| PDB=1tps | SCENE= }}
{{STRUCTURE_1tps| PDB=1tps | SCENE= }}
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'''ATOMIC STRUCTURE OF THE TRYPSIN-A90720A COMPLEX: A UNIFIED APPROACH TO STRUCTURE AND FUNCTION'''
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===ATOMIC STRUCTURE OF THE TRYPSIN-A90720A COMPLEX: A UNIFIED APPROACH TO STRUCTURE AND FUNCTION===
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==Overview==
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BACKGROUND: A90720A is a potent serine proteinase inhibitor produced by the terrestrial blue-green alga Microchaete loktakensis. Most of its structure has been defined by spectroscopic and degradative studies, but the configurations of several stereochemical centers are unknown, and its mode of inhibition of serine proteinases is not understood. We therefore examined the structure of the compound in a complex with trypsin. RESULTS: We have crystallized the bovine trypsin-A90720A complex and determined its three-dimensional structure at 1.90 A resolution using single crystal X-ray diffraction. The structure of the bound inhibitor is clearly shown in the electron density. The structure defines the absolute stereostructure of A90720A, establishes its bound conformation and illuminates its mode of inhibition. CONCLUSIONS: A90720A interacts with trypsin in a substrate-like manner through an extensive series of hydrogen bonds, hydrophobic interactions and steric complementarity. The compound uses a mixture of peptidal and nonpeptidal elements to imitate the canonical conformation of the exposed binding loop of 'small' proteinase inhibitors.
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(as it appears on PubMed at http://www.pubmed.gov), where 9383379 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9383379}}
==About this Structure==
==About this Structure==
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[[Category: Clardy, J.]]
[[Category: Clardy, J.]]
[[Category: Lee, A Y.]]
[[Category: Lee, A Y.]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 05:35:57 2008''

Revision as of 02:36, 29 July 2008

Image:1tps.png

Template:STRUCTURE 1tps

ATOMIC STRUCTURE OF THE TRYPSIN-A90720A COMPLEX: A UNIFIED APPROACH TO STRUCTURE AND FUNCTION

Template:ABSTRACT PUBMED 9383379

About this Structure

1TPS is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.

Reference

Atomic structure of the trypsin-A90720A complex: a unified approach to structure and function., Lee AY, Smitka TA, Bonjouklian R, Clardy J, Chem Biol. 1994 Oct;1(2):113-7. PMID:9383379

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