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1gwp

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Revision as of 15:12, 11 September 2015

STRUCTURE OF THE N-TERMINAL DOMAIN OF THE MATURE HIV-1 CAPSID PROTEIN

Structural highlights

1gwp is a 1 chain structure with sequence from Hiv-1. This structure supersedes the now removed PDB entries 1gds, 1gdy and 1gdz. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1a43, 1a8o, 1afv, 1ak4, 1aum, 1baj, 1hiw, 2hmx
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[GAG_HV1N5] Matrix protein p17 targets Gag and Gag-Pol polyproteins to the plasma membrane via a multipartite membrane binding signal, that includes its myristoylated N-terminus. Also mediates nuclear localization of the preintegration complex. Implicated in the release from host cell mediated by Vpu. Capsid protein p24 forms the conical core of the virus that encapsulates the genomic RNA-nucleocapsid complex. Nucleocapsid protein p7 encapsulates and protects viral dimeric unspliced (genomic) RNA. Binds these RNAs through its zinc fingers. p6-gag plays a role in budding of the assembled particle by interacting with the host class E VPS proteins TSG101 and PDCD6IP/AIP1 (By similarity).

Publication Abstract from PubMed

The capsid protein (CA) of the mature human immunodeficiency virus (HIV) contains an N-terminal beta-hairpin that is essential for formation of the capsid core particle. CA is generated by proteolytic cleavage of the Gag precursor polyprotein during viral maturation. We have determined the NMR structure of a 283-residue N-terminal fragment of immature HIV-1 Gag (Gag(283)), which includes the intact matrix (MA) and N-terminal capsid (CA(N)) domains. The beta-hairpin is unfolded in Gag(283), consistent with the proposal that hairpin formation occurs subsequent to proteolytic cleavage of Gag, triggering capsid assembly. Comparison of the immature and mature CA(N) structures reveals that beta-hairpin formation induces a approximately 2 A displacement of helix 6 and a concomitant displacement of the cyclophylin-A (CypA)-binding loop, suggesting a possible allosteric mechanism for CypA-mediated destabilization of the capsid particle during infectivity.

Structure of the N-terminal 283-residue fragment of the immature HIV-1 Gag polyprotein.,Tang C, Ndassa Y, Summers MF Nat Struct Biol. 2002 Jul;9(7):537-43. PMID:12032547^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Tang C, Ndassa Y, Summers MF. Structure of the N-terminal 283-residue fragment of the immature HIV-1 Gag polyprotein. Nat Struct Biol. 2002 Jul;9(7):537-43. PMID:12032547 doi:10.1038/nsb806

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1gwp"

@@ Line 2: / Line 2: @@
 <StructureSection load='1gwp' size='340' side='right' caption='[[1gwp]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1gwp]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Hiv-1 Hiv-1]. This structure supersedes the now removed PDB entries  and [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1gdz 1gdz]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GWP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1GWP FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1gwp]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Hiv-1 Hiv-1]. This structure supersedes the now removed PDB entries [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1gds 1gds], [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1gdy 1gdy] and [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1gdz 1gdz]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GWP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1GWP FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1a43|1a43]], [[1a8o|1a8o]], [[1afv|1afv]], [[1ak4|1ak4]], [[1aum|1aum]], [[1baj|1baj]], [[1hiw|1hiw]], [[2hmx|2hmx]]</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1gwp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gwp OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1gwp RCSB], [http://www.ebi.ac.uk/pdbsum/1gwp PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1gwp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gwp OCA], [http://pdbe.org/1gwp PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1gwp RCSB], [http://www.ebi.ac.uk/pdbsum/1gwp PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 16: / Line 16: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1gwp" style="background-color:#fffaf0;"></div>
 ==See Also==

1gwp

From Proteopedia

Revision as of 15:12, 11 September 2015

STRUCTURE OF THE N-TERMINAL DOMAIN OF THE MATURE HIV-1 CAPSID PROTEIN

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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