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==HUMAN CYCLOPHILIN A BOUND TO THE AMINO-TERMINAL DOMAIN OF HIV-1 CAPSID== | |||
<StructureSection load='1ak4' size='340' side='right'caption='[[1ak4]], [[Resolution|resolution]] 2.36Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1ak4]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. The July 2013 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''HIV Capsid'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2013_7 10.2210/rcsb_pdb/mom_2013_7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AK4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1AK4 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.36Å</td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ak4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ak4 OCA], [https://pdbe.org/1ak4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ak4 RCSB], [https://www.ebi.ac.uk/pdbsum/1ak4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ak4 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/PPIA_HUMAN PPIA_HUMAN] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides. | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ak/1ak4_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1ak4 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The HIV-1 capsid protein forms the conical core structure at the center of the mature virion. Capsid also binds the human peptidyl prolyl isomerase, cyclophilin A, thereby packaging the enzyme into the virion. Cyclophilin A subsequently performs an essential function in HIV-1 replication, possibly helping to disassemble the capsid core upon infection. We report the 2.36 A crystal structure of the N-terminal domain of HIV-1 capsid (residues 1-151) in complex with human cyclophilin A. A single exposed capsid loop (residues 85-93) binds in the enzyme's active site, and Pro-90 adopts an unprecedented trans conformation. The structure suggests how cyclophilin A can act as a sequence-specific binding protein and a nonspecific prolyl isomerase. In the crystal lattice, capsid molecules assemble into continuous planar strips. Side by side association of these strips may allow capsid to form the surface of the viral core. Cyclophilin A could then function by weakening the association between capsid strips, thereby promoting disassembly of the viral core. | |||
Crystal structure of human cyclophilin A bound to the amino-terminal domain of HIV-1 capsid.,Gamble TR, Vajdos FF, Yoo S, Worthylake DK, Houseweart M, Sundquist WI, Hill CP Cell. 1996 Dec 27;87(7):1285-94. PMID:8980234<ref>PMID:8980234</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1ak4" style="background-color:#fffaf0;"></div> | |||
== | ==See Also== | ||
*[[Cyclophilin 3D structures|Cyclophilin 3D structures]] | |||
*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: HIV Capsid]] | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Human immunodeficiency virus 1]] | [[Category: Human immunodeficiency virus 1]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: RCSB PDB Molecule of the Month]] | ||
[[Category: Gamble | [[Category: Gamble TR]] | ||
[[Category: Hill | [[Category: Hill CP]] | ||
[[Category: Sundquist | [[Category: Sundquist WI]] | ||
[[Category: Vajdos | [[Category: Vajdos FF]] | ||
[[Category: Worthylake | [[Category: Worthylake DK]] | ||
Latest revision as of 13:53, 2 August 2023
HUMAN CYCLOPHILIN A BOUND TO THE AMINO-TERMINAL DOMAIN OF HIV-1 CAPSIDHUMAN CYCLOPHILIN A BOUND TO THE AMINO-TERMINAL DOMAIN OF HIV-1 CAPSID
Structural highlights
FunctionPPIA_HUMAN PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe HIV-1 capsid protein forms the conical core structure at the center of the mature virion. Capsid also binds the human peptidyl prolyl isomerase, cyclophilin A, thereby packaging the enzyme into the virion. Cyclophilin A subsequently performs an essential function in HIV-1 replication, possibly helping to disassemble the capsid core upon infection. We report the 2.36 A crystal structure of the N-terminal domain of HIV-1 capsid (residues 1-151) in complex with human cyclophilin A. A single exposed capsid loop (residues 85-93) binds in the enzyme's active site, and Pro-90 adopts an unprecedented trans conformation. The structure suggests how cyclophilin A can act as a sequence-specific binding protein and a nonspecific prolyl isomerase. In the crystal lattice, capsid molecules assemble into continuous planar strips. Side by side association of these strips may allow capsid to form the surface of the viral core. Cyclophilin A could then function by weakening the association between capsid strips, thereby promoting disassembly of the viral core. Crystal structure of human cyclophilin A bound to the amino-terminal domain of HIV-1 capsid.,Gamble TR, Vajdos FF, Yoo S, Worthylake DK, Houseweart M, Sundquist WI, Hill CP Cell. 1996 Dec 27;87(7):1285-94. PMID:8980234[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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