8izn

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Structural study of Interferon-induced, double-stranded RNA-activated protein kinase (PKR) and Non-structural protein 1 (NS1) complex

Structural highlights

8izn is a 2 chain structure with sequence from Homo sapiens and Influenza A virus (A/Memphis/102/1972(H3N2)). Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Electron Microscopy, Resolution 6.67Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

E2AK2_HUMAN Following activation by double-stranded RNA in the presence of ATP, the kinase becomes autophosphorylated and can catalyze the phosphorylation of the translation initiation factor EIF2S1, which leads to an inhibition of the initiation of protein synthesis. Double-stranded RNA is generated during the course of a viral infection. In addition to serine/threonine-protein kinase activity, also has tyrosine-protein kinase activity: phosphorylates CDK1 upon DNA damage. CDK1 phosphorylation triggers CDK1 polyubiquitination and subsequent proteolysis, thus leading to G2 arrest.[1]

References

  1. ↑ Yoon CH, Miah MA, Kim KP, Bae YS. New Cdc2 Tyr 4 phosphorylation by dsRNA-activated protein kinase triggers Cdc2 polyubiquitination and G2 arrest under genotoxic stresses. EMBO Rep. 2010 May;11(5):393-9. doi: 10.1038/embor.2010.45. Epub 2010 Apr 16. PMID:20395957 doi:http://dx.doi.org/10.1038/embor.2010.45

Contents


PDB ID 8izn

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OCA

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