2hw0 | pdb_00002hw0

NMR Solution Structure of the nuclease domain from the Replicator Initiator Protein from porcine circovirus PCV2

spinqualitylabelsall models 2hw0, 31 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2hw0 is a 1 chain structure with sequence from Pcv2. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: rep, ORF1 (PCV2) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Circoviruses are the smallest circular single-stranded DNA viruses able to replicate in mammalian cells. Essential to their replication is the replication initiator, or Rep protein that initiates the rolling circle replication (RCR) of the viral genome. Here we report the NMR solution three-dimensional structure of the endonuclease domain from the Rep protein of porcine circovirus type 2 (PCV2), the causative agent of postweaning multisystemic wasting syndrome in swine. The domain comprises residues 12-112 of the full-length protein and exhibits the fold described previously for the Rep protein of the representative geminivirus tomato yellow leaf curl Sardinia virus. The structure, however, differs significantly in some secondary structure elements that decorate the central five-stranded beta-sheet, including the replacement of a beta-hairpin by an alpha-helix in PCV2 Rep. The identification of the divalent metal binding site was accomplished by following the paramagnetic broadening of NMR amide signals upon Mn(2+) titration. The site comprises three conserved acidic residues on the exposed face of the central beta-sheet. For the 1:1 complex of the PCV2 Rep nuclease domain with a 22mer double-stranded DNA oligonucleotide chemical shift mapping allowed the identification of the DNA binding site on the protein and aided in constructing a model of the protein/DNA complex. Solution structure, divalent metal and DNA binding of the endonuclease domain from the replication initiation protein from porcine circovirus 2.,Vega-Rocha S, Byeon IJ, Gronenborn B, Gronenborn AM, Campos-Olivas R J Mol Biol. 2007 Mar 23;367(2):473-87. Epub 2007 Jan 9. PMID:17275023 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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