1hp7

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{{STRUCTURE_1hp7| PDB=1hp7 | SCENE= }}
{{STRUCTURE_1hp7| PDB=1hp7 | SCENE= }}
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'''A 2.1 ANGSTROM STRUCTURE OF AN UNCLEAVED ALPHA-1-ANTITRYPSIN SHOWS VARIABILITY OF THE REACTIVE CENTER AND OTHER LOOPS'''
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===A 2.1 ANGSTROM STRUCTURE OF AN UNCLEAVED ALPHA-1-ANTITRYPSIN SHOWS VARIABILITY OF THE REACTIVE CENTER AND OTHER LOOPS===
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==Overview==
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Serpin (serine protease inhibitor) proteins are involved in diverse physiological processes including inflammation, coagulation, matrix remodeling, and cell differentiation. Deficiency of normal serpin functions leads to various hereditary diseases. Besides their clinical importance, serpin proteins draw much attention due to the large conformational changes that occur upon interaction with proteases. We present here the crystal structure of an uncleaved alpha(1)-antitrypsin determined by the multiple isomorphous replacement method and refined to 2.1 A resolution. The structure, which is the first active serpin structure based on experimental phases, reveals novel conformations in the flexible loops, including the proximal hinge region of the reactive center loop and the surface cavity region in the central beta-sheet, sheet A. The determined loop conformation explains the results of recent mutagenesis studies and provides detailed insights into the protease inhibition mechanism. The high-resolution structure of active alpha(1)-antitrypsin also provides evidence for the existence of localized van-der-Waals strain in the central hydrophobic core.
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(as it appears on PubMed at http://www.pubmed.gov), where 11178897 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11178897}}
==About this Structure==
==About this Structure==
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[[Category: Yu, M H.]]
[[Category: Yu, M H.]]
[[Category: Uncleaved alpha-1-antitrypsin serpin]]
[[Category: Uncleaved alpha-1-antitrypsin serpin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 08:29:42 2008''

Revision as of 05:29, 1 July 2008

Image:1hp7.png

Template:STRUCTURE 1hp7

A 2.1 ANGSTROM STRUCTURE OF AN UNCLEAVED ALPHA-1-ANTITRYPSIN SHOWS VARIABILITY OF THE REACTIVE CENTER AND OTHER LOOPS

Template:ABSTRACT PUBMED 11178897

About this Structure

1HP7 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

A 2.1 A resolution structure of an uncleaved alpha(1)-antitrypsin shows variability of the reactive center and other loops., Kim S, Woo J, Seo EJ, Yu M, Ryu S, J Mol Biol. 2001 Feb 9;306(1):109-19. PMID:11178897

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