3gdx
Dna polymerase beta with a gapped DND substrate and dTMP(CF2)PP
Structural highlights
FunctionDPOLB_HUMAN Repair polymerase that plays a key role in base-excision repair. Has 5'-deoxyribose-5-phosphate lyase (dRP lyase) activity that removes the 5' sugar phosphate and also acts as a DNA polymerase that adds one nucleotide to the 3' end of the arising single-nucleotide gap. Conducts 'gap-filling' DNA synthesis in a stepwise distributive fashion rather than in a processive fashion as for other DNA polymerases.[1] [2] [3] [4] 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 PubMedAlpha,beta-difluoromethylene deoxynucleoside 5'-triphosphates (dNTPs, N = A or C) are advantageously obtained via phosphorylation of corresponding dNDP analogues using catalytic ATP, PEP, nucleoside diphosphate kinase, and pyruvate kinase. DNA pol beta K(d) values for the alpha,beta-CF(2) and unmodified dNTPs, alpha,beta-NH dUTP, and the alpha,beta-CH(2) analogues of dATP and dGTP are discussed in relation to the conformations of alpha,beta-CF(2) dTTP versus alpha,beta-NH dUTP bound into the enzyme active site. Alpha,beta-difluoromethylene deoxynucleoside 5'-triphosphates: a convenient synthesis of useful probes for DNA polymerase beta structure and function.,Upton TG, Kashemirov BA, McKenna CE, Goodman MF, Prakash GK, Kultyshev R, Batra VK, Shock DD, Pedersen LC, Beard WA, Wilson SH Org Lett. 2009 May 7;11(9):1883-6. PMID:19351147[5] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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