5f8m | pdb_00005f8m

Enterovirus 71 Polymerase Elongation Complex (C3S4/5 Form)

spinqualitylabelsall models 5f8m, resolution 2.83Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5f8m is a 3 chain structure with sequence from Ev-71. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: GOL, MG, POP, SO4, ZN Related: 5f8g, 5f8h, 5f8i, 5f8j, 5f8l, 5f8n, 5f8o Activity: RNA-directed RNA polymerase, with EC number 2.7.7.48 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Viral RNA-dependent RNA polymerases (RdRPs) play essential roles in viral genome replication and transcription. We previously reported several structural states of the poliovirus RdRP nucleotide addition cycle (NAC) that revealed a unique palm domain-based active site closure mechanism and proposed a six-state NAC model including a hypothetical state representing translocation intermediates. Using the RdRP from another human enterovirus, enterovirus 71, here we report seven RdRP elongation complex structures derived from a crystal lattice that allows three NAC events. These structures suggested a key order of events in initial NTP binding and NTP-induced active site closure and revealed a bona fide translocation intermediate featuring asymmetric movement of the template-product duplex. Our work provides essential missing links in understanding NTP recognition and translocation mechanisms in viral RdRPs and emphasizes the uniqueness of the viral RdRPs compared with other processive polymerases. Structural basis of viral RNA-dependent RNA polymerase catalysis and translocation.,Shu B, Gong P Proc Natl Acad Sci U S A. 2016 Jul 12;113(28):E4005-14. doi:, 10.1073/pnas.1602591113. Epub 2016 Jun 23. PMID:27339134 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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