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1a43

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[[Image:1a43.gif|left|200px]]
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{{STRUCTURE_1a43| PDB=1a43 | SCENE= }}
{{STRUCTURE_1a43| PDB=1a43 | SCENE= }}
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'''STRUCTURE OF THE HIV-1 CAPSID PROTEIN DIMERIZATION DOMAIN AT 2.6A RESOLUTION'''
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===STRUCTURE OF THE HIV-1 CAPSID PROTEIN DIMERIZATION DOMAIN AT 2.6A RESOLUTION===
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==Overview==
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The human immunodeficiency virus type I (HIV-1) capsid protein is initially synthesized as the central domain of the Gag polyprotein, and is subsequently proteolytically processed into a discrete 231-amino-acid protein that forms the distinctive conical core of the mature virus. The crystal structures of two proteins that span the C-terminal domain of the capsid are reported here: one encompassing residues 146-231 (CA146-231) and the other extending to include the 14-residue p2 domain of Gag (CA146-p2). The isomorphous CA146-231 and CA146-p2 structures were determined by molecular replacement and have been refined at 2.6 A resolution to R factors of 22.3 and 20.7% (Rfree = 28.1 and 27.5%), respectively. The ordered domains comprise residues 148-219 for CA146-231 and 148-218 for CA146-p2, and their refined structures are essentially identical. The proteins are composed of a 310 helix followed by an extended strand and four alpha-helices. A crystallographic twofold generates a dimer that is stabilized by parallel packing of an alpha-helix 2 across the dimer interface and by packing of the 310 helix into a groove created by alpha-helices 2 and 3 of the partner molecule. CA146-231 and CA146-p2 dimerize with the full affinity of the intact capsid protein, and their structures therefore reveal the essential dimer interface of the HIV-1 capsid.
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(as it appears on PubMed at http://www.pubmed.gov), where 10089398 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10089398}}
==About this Structure==
==About this Structure==
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[[Category: Capsid]]
[[Category: Capsid]]
[[Category: Hiv-1]]
[[Category: Hiv-1]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 09:46:58 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 15:59:35 2008''

Revision as of 12:59, 30 June 2008

Image:1a43.png

Template:STRUCTURE 1a43

STRUCTURE OF THE HIV-1 CAPSID PROTEIN DIMERIZATION DOMAIN AT 2.6A RESOLUTION

Template:ABSTRACT PUBMED 10089398

About this Structure

1A43 is a Single protein structure of sequence from Human immunodeficiency virus 1. Full crystallographic information is available from OCA.

Reference

Structures of the HIV-1 capsid protein dimerization domain at 2.6 A resolution., Worthylake DK, Wang H, Yoo S, Sundquist WI, Hill CP, Acta Crystallogr D Biol Crystallogr. 1999 Jan;55(Pt 1):85-92. Epub 1999, Jan 1. PMID:10089398

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