View source for 2bl6


==Solution structure of the Zn complex of EIAV NCp11(22-58) peptide, including two CCHC Zn-binding motifs.==
<StructureSection load='2bl6' size='340' side='right'caption='[[2bl6]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2bl6]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Equine_infectious_anemia_virus Equine infectious anemia virus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BL6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BL6 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=2bl6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bl6 OCA], [https://pdbe.org/2bl6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bl6 RCSB], [https://www.ebi.ac.uk/pdbsum/2bl6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bl6 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/GAG_EIAVY GAG_EIAVY] Matrix protein p15 forms the outer shell of the core of the virus, lining the inner surface of the viral membrane (By similarity).  Capsid protein p26 forms the conical core of the virus that encapsulates the genomic RNA-nucleocapsid complex (By similarity).  Nucleocapsid protein p11 encapsulates and protects viral dimeric unspliced (genomic) RNA. Binds these RNAs through its zinc fingers (By similarity).  p9 plays a role in budding of the assembled particle by interacting with PDCD6IP/AIP1 (By similarity).
== 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/bl/2bl6_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=2bl6 ConSurf].
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== Publication Abstract from PubMed ==
Lentiviral nucleocapsid proteins are a class of multifunctional proteins that play an essential role in RNA packaging and viral infectivity. They contain two CX(2)CX(4)HX(4)C zinc binding motifs connected by a basic linker of variable length. The 3D structure of a 37-aa peptide corresponding to sequence 22-58 from lentiviral EIAV nucleocapsid protein NCp11, complexed with zinc, has been determined by 2D (1)H NMR spectroscopy, simulated annealing, and molecular dynamics. The solution structure consists of two zinc binding domains held together by a five-residue basic linker Arg(38)-Ala-Pro-Lys-Val(42) that allows for spatial proximity between the two finger domains. Observed linker folding is stabilized by H bonded secondary structure elements, resulting in an Omega-shaped central region, asymmetrically centered on the linker. The conformational differences and similarities with other NC zinc binding knuckles have been systematically analyzed. The two CCHC motifs, both characterized by a peculiar Pro-Gly sequence preceding the His residue, although preserving Zn-binding geometry and chirality of other known NC proteins, exhibit local fold differences both between each other and in comparison with other previously characterized retroviral CCHC motifs.

Structural features in EIAV NCp11: a lentivirus nucleocapsid protein with a short linker.,Amodeo P, Castiglione Morelli MA, Ostuni A, Battistuzzi G, Bavoso A Biochemistry. 2006 May 2;45(17):5517-26. PMID:16634633<ref>PMID:16634633</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2bl6" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Equine infectious anemia virus]]
[[Category: Large Structures]]
[[Category: Amodeo P]]
[[Category: Bavoso A]]
[[Category: Castiglione-Morelli MA]]
[[Category: Ostuni A]]