2ezq

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[[Image:2ezq.gif|left|200px]]
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{{STRUCTURE_2ezq| PDB=2ezq | SCENE= }}
{{STRUCTURE_2ezq| PDB=2ezq | SCENE= }}
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'''SOLUTION NMR STRUCTURE OF ECTODOMAIN OF SIV GP41, MODELS 11-20 OF AN ENSEMBLE OF 40 SIMULATED ANNEALING STRUCTURES'''
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===SOLUTION NMR STRUCTURE OF ECTODOMAIN OF SIV GP41, MODELS 11-20 OF AN ENSEMBLE OF 40 SIMULATED ANNEALING STRUCTURES===
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==Overview==
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The solution structure of the ectodomain of simian immunodeficiency virus (SIV) gp41 (e-gp41), consisting of residues 27-149, has been determined by multidimensional heteronuclear NMR spectroscopy. SIV e-gp41 is a symmetric 44 kDa trimer with each subunit consisting of antiparallel N-terminal (residues 30-80) and C-terminal (residues 107-147) helices connected by a 26 residue loop (residues 81-106). The N-terminal helices of each subunit form a parallel coiled-coil structure in the interior of the complex which is surrounded by the C-terminal helices located on the exterior of the complex. The loop region is ordered and displays numerous intermolecular and non-sequential intramolecular contacts. The helical core of SIV e-gp41 is similar to recent X-ray structures of truncated constructs of the helical core of HIV-1 e-gp41. The present structure establishes unambiguously the connectivity of the N- and C-terminal helices in the trimer, and characterizes the conformation of the intervening loop, which has been implicated by mutagenesis and antibody epitope mapping to play a key role in gp120 association. In conjunction with previous studies, the solution structure of the SIV e-gp41 ectodomain provides insight into the binding site of gp120 and the mechanism of cell fusion. The present structure of SIV e-gp41 represents one of the largest protein structures determined by NMR to date.
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{{ABSTRACT_PUBMED_9707417}}
==About this Structure==
==About this Structure==
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2EZQ is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Simian_immunodeficiency_virus Simian immunodeficiency virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EZQ OCA].
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2EZQ is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Simian_immunodeficiency_virus Simian immunodeficiency virus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EZQ OCA].
==Reference==
==Reference==
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[[Category: Siv gp41 ectodomain]]
[[Category: Siv gp41 ectodomain]]
[[Category: Virus envelope protein]]
[[Category: Virus envelope protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 03:17:33 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 15:00:13 2008''

Revision as of 12:00, 29 July 2008

Image:2ezq.png

Template:STRUCTURE 2ezq

SOLUTION NMR STRUCTURE OF ECTODOMAIN OF SIV GP41, MODELS 11-20 OF AN ENSEMBLE OF 40 SIMULATED ANNEALING STRUCTURES

Template:ABSTRACT PUBMED 9707417

About this Structure

2EZQ is a Single protein structure of sequence from Simian immunodeficiency virus. Full experimental information is available from OCA.

Reference

Three-dimensional solution structure of the 44 kDa ectodomain of SIV gp41., Caffrey M, Cai M, Kaufman J, Stahl SJ, Wingfield PT, Covell DG, Gronenborn AM, Clore GM, EMBO J. 1998 Aug 17;17(16):4572-84. PMID:9707417

Page seeded by OCA on Tue Jul 29 15:00:13 2008

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