4i1t | pdb_00004i1t

Crystal structure of the cap-snatching endonuclease from Pichinde virus

spinqualitylabelsall models 4i1t, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4i1t is a 1 chain structure with sequence from Piarv. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: L (PIARV) Activity: RNA-directed RNA polymerase, with EC number 2.7.7.48 Resources: FirstGlance, OCA, RCSB, PDBsum Function [Q915A5_PIARV] RNA-dependent RNA polymerase which is responsible for replication and transcription of the viral RNA genome. During transcription, synthesizes 4 subgenomic RNAs, and assures their capping by a cap-snatching mechanism, in which cellular capped pre-mRNA are used to generate primers for viral transcription. The 3'-end of subgenomic mRNAs molecules are heterogeneous and not polyadenylated. The replicase function is to direct synthesis of antigenomic and genomic RNA which are encapsidated and non capped. As a consequence of the use of the same enzyme for both transcription and replication, these mechanisms need to be well coordinated. These processes may be regulated by proteins N and Z in a dose-dependent manner (By similarity).[PIRNR:PIRNR000836] See Also RNA polymerase

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