CRYSTAL STRUCTURE OF THE REOVIRUS OUTER CAPSID PROTEIN SIGMA 3CRYSTAL STRUCTURE OF THE REOVIRUS OUTER CAPSID PROTEIN SIGMA 3

Structural highlights

1fn9 is a 2 chain structure with sequence from Reovirus sp.. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.8Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

SIGM3_REOVD Stimulates translation by blocking the activation of the dsRNA-dependent protein kinase EIF2AK2/PKR, thereby inhibiting the host interferon response. Sigma3 prevents the activation of EIF2AK2 by competing with the kinase for dsRNA-binding.[1] The viral outer shell polypeptides, of which sigma-3 is one, impose structural constraints that prevent elongation of nascent transcripts by the RNA-dependent RNA polymerase lambda-3.

Evolutionary Conservation

 

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

See Also

References

  1. Yue Z, Shatkin AJ. Double-stranded RNA-dependent protein kinase (PKR) is regulated by reovirus structural proteins. Virology. 1997 Aug 4;234(2):364-71. PMID:9268168 doi:10.1006/viro.1997.8664

1fn9, resolution 1.80Å

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA