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1nov

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Revision as of 18:40, 20 November 2019

NODAMURA VIRUS

Structural highlights

1nov is a 6 chain structure with sequence from Nodav and Nodamura virus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[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

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

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^[1]

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

References

↑ Zlotnick A, Natarajan P, Munshi S, Johnson JE. Resolution of space-group ambiguity and structure determination of nodamura virus to 3.3 A resolution from pseudo-R32 (monoclinic) crystals. Acta Crystallogr D Biol Crystallogr. 1997 Nov 1;53(Pt 6):738-46. PMID:15299863 doi:10.1107/S0907444997007427

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
 ==NODAMURA VIRUS==
-<StructureSection load='1nov' size='340' side='right' caption='[[1nov]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
+<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 [http://en.wikipedia.org/wiki/Nodav Nodav] and [http://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 [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1NOV FirstGlance]. <br>
@@ Line 27: / Line 27: @@
 </div>
 <div class="pdbe-citations 1nov" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Virus coat protein|Virus coat protein]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Nodamura virus]]
 [[Category: Nodav]]

1nov

From Proteopedia

Revision as of 18:40, 20 November 2019

NODAMURA VIRUS

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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