This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

2g2q

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:47, 18 October 2017

The crystal structure of G4, the poxviral disulfide oxidoreductase essential for cytoplasmic disulfide bond formation

Structural highlights

2g2q is a 3 chain structure with sequence from Vaccinia virus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Gene:	g4l (Vaccinia virus)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[GLRX2_VACCW] Glutaredoxin necessary for virion morphogenesis and virus replication. Functions as a thiol-disulfide transfer protein between membrane-associated A2.5 and substrates L1 or F9. The complete pathway for formation of disulfide bonds in intracellular virion membrane proteins sequentially involves oxidation of E10, A2.5 and G4. Exhibit thioltransferase and dehydroascorbate reductase activities in vitro.^[1] ^[2] ^[3] ^[4]

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

The possibility of the release of smallpox virus into a predominantly nonimmunized population highlights the importance of understanding poxvirus biology. Poxviruses encode a conserved pathway that is required to oxidize disulfide bonds in nascent viral proteins that fold in the reducing environment of the eukaryotic host cytoplasm. We present the structure of the last enzyme of the vaccinia virus pathway, G4, which is almost identical in smallpox virus. G4 catalyzes the formation of disulfide bonds in proteins that are critical for virus maturation and host cell infection. G4 contains a thioredoxin fold and a Cys-X-X-Cys active site. In solution, G4 monomers and dimers are observed. In the crystal, G4 is found as a dimer that buries 4,500 A(2) in the interface and occludes the active site, which could protect the reactive disulfide from reduction in the cytoplasm. The structure serves as a model for drug design targeting viral disulfide bond formation.

The structure of G4, the poxvirus disulfide oxidoreductase essential for virus maturation and infectivity.,Su HP, Lin DY, Garboczi DN J Virol. 2006 Aug;80(15):7706-13. PMID:16840349^[5]

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

References

↑ White CL, Weisberg AS, Moss B. A glutaredoxin, encoded by the G4L gene of vaccinia virus, is essential for virion morphogenesis. J Virol. 2000 Oct;74(19):9175-83. PMID:10982364
↑ White CL, Senkevich TG, Moss B. Vaccinia virus G4L glutaredoxin is an essential intermediate of a cytoplasmic disulfide bond pathway required for virion assembly. J Virol. 2002 Jan;76(2):467-72. PMID:11752136
↑ Senkevich TG, White CL, Koonin EV, Moss B. Complete pathway for protein disulfide bond formation encoded by poxviruses. Proc Natl Acad Sci U S A. 2002 May 14;99(10):6667-72. Epub 2002 Apr 30. PMID:11983854 doi:http://dx.doi.org/10.1073/pnas.062163799
↑ Gvakharia BO, Koonin EK, Mathews CK. Vaccinia virus G4L gene encodes a second glutaredoxin. Virology. 1996 Dec 15;226(2):408-11. PMID:8955061 doi:http://dx.doi.org/10.1006/viro.1996.0669
↑ Su HP, Lin DY, Garboczi DN. The structure of G4, the poxvirus disulfide oxidoreductase essential for virus maturation and infectivity. J Virol. 2006 Aug;80(15):7706-13. PMID:16840349 doi:80/15/7706

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2g2q"

@@ Line 1: / Line 1: @@
 ==The crystal structure of G4, the poxviral disulfide oxidoreductase essential for cytoplasmic disulfide bond formation==
 <StructureSection load='2g2q' size='340' side='right' caption='[[2g2q]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">g4l ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10245 Vaccinia virus])</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=2g2q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2g2q OCA], [http://pdbe.org/2g2q PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2g2q RCSB], [http://www.ebi.ac.uk/pdbsum/2g2q 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=2g2q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2g2q OCA], [http://pdbe.org/2g2q PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2g2q RCSB], [http://www.ebi.ac.uk/pdbsum/2g2q PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2g2q ProSAT]</span></td></tr>
 </table>
 == Function ==

2g2q

From Proteopedia

Revision as of 07:47, 18 October 2017

The crystal structure of G4, the poxviral disulfide oxidoreductase essential for cytoplasmic disulfide bond formation

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox