View source for 1nov


==NODAMURA VIRUS==
<StructureSection load='1nov' size='340' side='right'caption='[[1nov]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1nov]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Nodamura_virus Nodamura virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NOV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NOV 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]] 3.5&#8491;</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=1nov FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nov OCA], [https://pdbe.org/1nov PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1nov RCSB], [https://www.ebi.ac.uk/pdbsum/1nov PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1nov ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CAPSD_NODAM CAPSD_NODAM] Capsid protein alpha self-assembles to form an icosahedral procapsid with a T=3 symmetry, about 30 nm in diameter, and consisting of 60 capsid proteins trimers. The capsid encapsulates the two genomic RNAs. Capsid maturation occurs via autoproteolytic cleavage of capsid protein alpha generating capsid protein beta and the membrane-active peptide gamma (By similarity).  Peptide gamma: membrane-permeabilizing peptide produced by virus maturation, thereby creating the infectious virion. After endocytosis into the host cell, peptide gamma is probably exposed in endosomes, where it permeabilizes the endosomal membrane, facilitating translocation of viral capsid or RNA into the cytoplasm (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/no/1nov_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1nov ConSurf].
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== Publication Abstract from PubMed ==
Monoclinic crystals of nodamura virus (NOV) have two virus molecules per asymmetric unit. Packing analysis reveals a pseudo-rhombohedral (pseudo-C2 monoclinic) arrangement of particles in the actual P2(1) space group (a = 562.1, b = 354.1, c = 612.8 A, beta = 110.9 degrees ). The R32 symmetry is broken rotationally and translationally. The pseudo-symmetry of the unit cell results in three possible monoclinic origins and also restrains the four particles in the unit cell to similar orientations. NOV particles deviate by less than 3 degrees from the ideal orientations, causing overlap of peaks in the rotation function and the generation of peaks that were not interpretable as particle symmetry elements. The space-group ambiguity was resolved by analysing the relationship between the particle orientations determined by high-resolution rotation functions and the attenuation of peak heights in native Patterson maps. Particles were centered less than 1 A from the R32 special positions. Three different approaches were required to identify the correct particle center. Following the solutions of the rotation and translation problems, phases were computed using the coordinates of flock house virus (FHV), another member of this virus family. The phases were improved by real-space molecular averaging with a 120-fold non-crystallographic symmetry and by solvent flattening with a spherical mask. The final model for the NOV structure was built using the 3.3 A averaged map. While the overall subunit structure was very similar to that of other nodaviruses, FHV and black beetle virus, NOV showed distinct structural features near particle threefold and quasi-threefold axes and at the protein-RNA interfaces that are consistent with phenotype differences among the related viruses.

Resolution of space-group ambiguity and structure determination of nodamura virus to 3.3 A resolution from pseudo-R32 (monoclinic) crystals.,Zlotnick A, Natarajan P, Munshi S, Johnson JE Acta Crystallogr D Biol Crystallogr. 1997 Nov 1;53(Pt 6):738-46. PMID:15299863<ref>PMID:15299863</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 1nov" style="background-color:#fffaf0;"></div>

==See Also==
*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Nodamura virus]]
[[Category: Johnson JE]]
[[Category: Natarajan P]]