5omq

Ternary complex of 9N DNA polymerase in the replicative state with three metal ions in the active site

spinqualitylabelsall models 5omq, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5omq is a 3 chain structure with sequence from Thermococcus sp. 9oN-7 and Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.199Å Ligands: DTP, GOL, MG, MN, PGE Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function DPOL_THES9 Publication Abstract from PubMed Archaeal B-family polymerases drive biotechnology by accepting a wide substrate range of chemically modified nucleotides. By now no structural data for archaeal B-family DNA polymerases in a closed, ternary complex are available, which would be the basis for developing next generation nucleotides. We present the ternary crystal structures of KOD and 9 degrees N DNA polymerases complexed with DNA and the incoming dATP. The structures reveal a third metal ion in the active site, which was so far only observed for the eukaryotic B-family DNA polymerase delta and no other B-family DNA polymerase. The structures reveal a wide inner channel and numerous interactions with the template strand that provide space for modifications within the enzyme and may account for the high processivity, respectively. The crystal structures provide insights into the superiority over other DNA polymerases concerning the acceptance of modified nucleotides. Crystal structures of ternary complexes of archaeal B-family DNA polymerases.,Kropp HM, Betz K, Wirth J, Diederichs K, Marx A PLoS One. 2017 Dec 6;12(12):e0188005. doi: 10.1371/journal.pone.0188005., eCollection 2017. PMID:29211756 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also DNA polymerase 3D structures

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