3hi8

Crystal structure of proliferating cell nuclear antigen (PCNA) from Haloferax volcanii

spinqualitylabelsall models 3hi8, resolution 3.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3hi8 is a 6 chain structure with sequence from Atcc 29605. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: HVO_0175 (ATCC 29605) 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 The sliding clamp proliferating cell nuclear antigen (PCNA) plays vital roles in many aspects of DNA replication and repair in eukaryotic cells and in archaea. Realising the full potential of archaea as a model for PCNA function requires a combination of biochemical and genetic approaches. In order to provide a platform for subsequent reverse genetic analysis, PCNA from the halophilic archaeon Haloferax volcanii was subjected to crystallographic analysis. The gene was cloned and expressed in Escherichia coli and the protein was purified by affinity chromatography and crystallized by the vapour-diffusion technique. The structure was determined by molecular replacement and refined at 3.5 A resolution to a final R factor of 23.7% (R(free) = 25%). PCNA from H. volcanii was found to be homotrimeric and to resemble other homotrimeric PCNA clamps but with several differences that appear to be associated with adaptation of the protein to the high intracellular salt concentrations found in H. volcanii cells. Structural insights into the adaptation of proliferating cell nuclear antigen (PCNA) from Haloferax volcanii to a high-salt environment.,Morgunova E, Gray FC, Macneill SA, Ladenstein R Acta Crystallogr D Biol Crystallogr. 2009 Oct;65(Pt 10):1081-8. Epub 2009, Sep 16. PMID:19770505 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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