2yib

Structure of the RNA polymerase VP1 from Infectious Pancreatic Necrosis Virus

spinqualitylabelsall models 2yib, resolution 3.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2yib is a 4 chain structure with sequence from Infectious pancreatic necrosis virus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 3.8Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function RDRP_IPNVJ RNA-dependent RNA polymerase which is found both free and covalently attached to the genomic RNA. May also contain guanylyl and methyl transferase activities (By similarity). Publication Abstract from PubMed The RNA-dependent RNA polymerase VP1 of infectious pancreatic necrosis virus (IPNV) is a single polypeptide responsible for both viral RNA transcription and genome replication. Sequence analysis identifies IPNV VP1 as having an unusual active site topology. We have purified, crystallized and solved the structure of IPNV VP1 to 2.3 A resolution in its apo form and at 2.2 A resolution bound to the catalytically-activating metal magnesium. We find that recombinantly-expressed VP1 is highly active for RNA transcription and replication, yielding both free and polymerase-attached RNA products. IPNV VP1 also possesses terminal (deoxy)nucleotide transferase, RNA-dependent DNA polymerase (reverse transcriptase) and template-independent self-guanylylation activity. The N-terminus of VP1 interacts with the active-site cleft and we show that the N-terminal serine residue is required for formation of covalent RNAratiopolymerase complexes, providing a mechanism for the genesis of viral genomeratiopolymerase complexes observed in vivo. The N-terminus of the RNA polymerase from infectious pancreatic necrosis virus is the determinant of genome attachment.,Graham SC, Sarin LP, Bahar MW, Myers RA, Stuart DI, Bamford DH, Grimes JM PLoS Pathog. 2011 Jun;7(6):e1002085. Epub 2011 Jun 23. PMID:21731487 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also RNA polymerase 3D structures

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