A review of recent experiments on step-to-step "hand-off" of the DNA intermediates in mammalian base excision repair pathways.
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Beard WA
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Molekuliarnaia biologiia
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Understanding the loss-of-function in a triple missense mutant of DNA polymerase β found in prostate cancer.
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Beard WA
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2013
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International journal of oncology
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Amino acid substitution in the active site of DNA polymerase β explains the energy barrier of the nucleotidyl transfer reaction.
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Beard WA
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2013
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Journal of the American Chemical Society
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Insights into the Conformation of Aminofluorene-dG Adduct in a DNA Polymerase Active Site.
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Beard WA
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2013
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The Journal of biological chemistry
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Observing a DNA polymerase choose right from wrong.
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Beard WA
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2013
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Cell
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Inhibition of HIV-1 Reverse Transcriptase-Catalyzed Synthesis by Intercalated DNA Benzo[a]Pyrene 7,8-Dihydrodiol-9,10-Epoxide Adducts.
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Beard WA
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2013
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PloS one
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DNA Polymerase β Gap-filling Translesion DNA Synthesis.
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Beard WA
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2012
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Chemical research in toxicology
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DNA polymerase minor groove interactions modulate mutagenic bypass of a templating 8-oxoguanine lesion.
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Beard WA
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2012
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Nucleic acids research
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Effect of β,γ-CHF- and β,γ-CHCl-dGTP Halogen Atom Stereochemistry on the Transition State of DNA Polymerase β
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Beard WA
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2012
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Biochemistry
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Structures of dNTP Intermediate States during DNA Polymerase Active Site Assembly.
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Beard WA
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2012
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Structure (London, England : 1993)
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Perspective: pre-chemistry conformational changes in DNA polymerase mechanisms.
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Beard WA
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2012
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Theoretical chemistry accounts
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Metal-induced DNA translocation leads to DNA polymerase conformational activation.
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Beard WA
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2011
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Nucleic acids research
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Binary complex crystal structure of DNA polymerase β reveals multiple conformations of the templating 8-oxoguanine lesion.
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Beard WA
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2011
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Proceedings of the National Academy of Sciences of the United States of America
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Molecular insights into DNA polymerase deterrents for ribonucleotide insertion.
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Beard WA
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2011
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The Journal of biological chemistry
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DNA polymerase beta ribonucleotide discrimination: insertion, misinsertion, extension, and coding.
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Beard WA
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2010
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The Journal of biological chemistry
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DNA polymerase structure-based insight on the mutagenic properties of 8-oxoguanine.
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Beard WA
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2010
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Mutation research
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Substrate channeling in mammalian base excision repair pathways: passing the baton.
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Beard WA
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2010
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The Journal of biological chemistry
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Synthesis and biological evaluation of fluorinated deoxynucleotide analogs based on bis-(difluoromethylene)triphosphoric acid.
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Beard WA
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2010
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Proceedings of the National Academy of Sciences of the United States of America
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Halogenated beta,gamma-methylene- and ethylidene-dGTP-DNA ternary complexes with DNA polymerase beta: structural evidence for stereospecific binding of the fluoromethylene analogues.
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Beard WA
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2010
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Journal of the American Chemical Society
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Mutagenic conformation of 8-oxo-7,8-dihydro-2'-dGTP in the confines of a DNA polymerase active site.
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Beard WA
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2010
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Nature structural & molecular biology
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Base excision repair and design of small molecule inhibitors of human DNA polymerase beta.
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Beard WA
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2010
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Cell Mol Life Sci
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A real-time fluorescence method for enzymatic characterization of specialized human DNA polymerases.
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Beard WA
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2009
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Nucleic acids research
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DNA polymerase beta and PARP activities in base excision repair in living cells.
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Beard WA
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2009
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DNA repair
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Alpha,beta-difluoromethylene deoxynucleoside 5'-triphosphates: a convenient synthesis of useful probes for DNA polymerase beta structure and function.
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Beard WA
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2009
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Org Lett
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DNA polymerase beta substrate specificity: side chain modulation of the "A-rule".
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Beard WA
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2009
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The Journal of biological chemistry
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Alpha,beta-methylene-2'-deoxynucleoside 5'-triphosphates as noncleavable substrates for DNA polymerases: isolation, characterization, and stability studies of novel 2'-deoxycyclonucleosides, 3,5'-cyclo-dG, and 2,5'-cyclo-dT.
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Beard WA
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2008
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J Med Chem
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DNA polymerase beta fidelity: halomethylene-modified leaving groups in pre-steady-state kinetic analysis reveal differences at the chemical transition state.
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Beard WA
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2008
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Biochemistry
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Exploring the role of large conformational changes in the fidelity of DNA polymerase beta.
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Beard WA
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2008
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Proteins
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Incorrect nucleotide insertion at the active site of a G:A mismatch catalyzed by DNA polymerase beta.
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Beard WA
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2008
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Proceedings of the National Academy of Sciences of the United States of America
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Structures of DNA polymerase beta with active-site mismatches suggest a transient abasic site intermediate during misincorporation.
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Beard WA
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2008
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Molecular cell
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Modifying the beta,gamma leaving-group bridging oxygen alters nucleotide incorporation efficiency, fidelity, and the catalytic mechanism of DNA polymerase beta.
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Beard WA
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2007
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Biochemistry
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Differing conformational pathways before and after chemistry for insertion of dATP versus dCTP opposite 8-oxoG in DNA polymerase beta.
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Beard WA
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2007
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Biophys J
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The X family portrait: structural insights into biological functions of X family polymerases.
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Beard WA
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2007
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DNA repair
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Coordination of steps in single-nucleotide base excision repair mediated by apurinic/apyrimidinic endonuclease 1 and DNA polymerase beta.
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Beard WA
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2007
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The Journal of biological chemistry
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Magnesium-cationic dummy atom molecules enhance representation of DNA polymerase beta in molecular dynamics simulations: improved accuracy in studies of structural features and mutational effects.
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Beard WA
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2007
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Journal of molecular biology
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(R)-beta,gamma-fluoromethylene-dGTP-DNA ternary complex with DNA polymerase beta.
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Beard WA
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2007
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Journal of the American Chemical Society
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Regulation of DNA repair fidelity by molecular checkpoints: "gates" in DNA polymerase beta's substrate selection.
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Beard WA
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2006
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Biochemistry
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Determination of lysine pK values using [5-13C]lysine: application to the lyase domain of DNA Pol beta.
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Beard WA
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2006
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Journal of the American Chemical Society
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Structure of DNA polymerase beta with a benzo[c]phenanthrene diol epoxide-adducted template exhibits mutagenic features.
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Beard WA
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2006
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Proceedings of the National Academy of Sciences of the United States of America
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Energy analysis of chemistry for correct insertion by DNA polymerase beta.
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Beard WA
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2006
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Proceedings of the National Academy of Sciences of the United States of America
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Magnesium-induced assembly of a complete DNA polymerase catalytic complex.
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Beard WA
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2006
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Structure (London, England : 1993)
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Structure and mechanism of DNA polymerase Beta.
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Beard WA
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2006
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Chem Rev
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Activities and mechanism of DNA polymerase beta.
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Beard WA
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2006
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Methods in enzymology
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DNA polymerase beta and flap endonuclease 1 enzymatic specificities sustain DNA synthesis for long patch base excision repair.
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Beard WA
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2005
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The Journal of biological chemistry
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DNA polymerase lambda mediates a back-up base excision repair activity in extracts of mouse embryonic fibroblasts.
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Beard WA
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2005
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The Journal of biological chemistry
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Syn-full behavior by T7 DNA polymerase.
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Beard WA
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2005
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Structure (London, England : 1993)
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A thymine isostere in the templating position disrupts assembly of the closed DNA polymerase beta ternary complex.
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Beard WA
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2005
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Biochemistry
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Mismatch-induced conformational distortions in polymerase beta support an induced-fit mechanism for fidelity.
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Beard WA
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2005
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Biochemistry
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Nucleotide-induced DNA polymerase active site motions accommodating a mutagenic DNA intermediate.
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Beard WA
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2005
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Structure (London, England : 1993)
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Structural insight into the DNA polymerase beta deoxyribose phosphate lyase mechanism.
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Beard WA
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2005
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DNA repair
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High-level expression and purification of untagged and histidine-tagged HIV-1 reverse transcriptase.
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Beard WA
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2004
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Protein expression and purification
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Dynamic characterization of a DNA repair enzyme: NMR studies of [methyl-13C]methionine-labeled DNA polymerase beta.
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Beard WA
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2004
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Biochemistry
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Critical role of magnesium ions in DNA polymerase beta's closing and active site assembly.
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Beard WA
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2004
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Journal of the American Chemical Society
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Influence of DNA structure on DNA polymerase beta active site function: extension of mutagenic DNA intermediates.
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Beard WA
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2004
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The Journal of biological chemistry
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Highly organized but pliant active site of DNA polymerase beta: compensatory mechanisms in mutant enzymes revealed by dynamics simulations and energy analyses.
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Beard WA
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2004
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Biophys J
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Structural insights into DNA polymerase beta deterrents for misincorporation support an induced-fit mechanism for fidelity.
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Beard WA
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2004
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Structure (London, England : 1993)
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Localization of the deoxyribose phosphate lyase active site in human DNA polymerase iota by controlled proteolysis.
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Beard WA
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2003
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The Journal of biological chemistry
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Rapid segmental and subdomain motions of DNA polymerase beta.
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Beard WA
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2003
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The Journal of biological chemistry
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Structure of DNA polymerase beta with the mutagenic DNA lesion 8-oxodeoxyguanine reveals structural insights into its coding potential.
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Beard WA
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2003
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Structure (London, England : 1993)
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Structural insights into the origins of DNA polymerase fidelity.
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Beard WA
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2003
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Structure (London, England : 1993)
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Efficiency of correct nucleotide insertion governs DNA polymerase fidelity.
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Beard WA
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2002
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The Journal of biological chemistry
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Loss of DNA polymerase beta stacking interactions with templating purines, but not pyrimidines, alters catalytic efficiency and fidelity.
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Beard WA
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2002
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The Journal of biological chemistry
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Local deformations revealed by dynamics simulations of DNA polymerase Beta with DNA mismatches at the primer terminus.
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Beard WA
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2002
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Journal of molecular biology
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Polymerase beta simulations suggest that Arg258 rotation is a slow step rather than large subdomain motions per se.
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Beard WA
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2002
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Journal of molecular biology
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DNA lesion bypass polymerases open up.
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Beard WA
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2001
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Structure (London, England : 1993)
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DNA structure and aspartate 276 influence nucleotide binding to human DNA polymerase beta. Implication for the identity of the rate-limiting conformational change.
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Beard WA
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2001
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The Journal of biological chemistry
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Vertical-scanning mutagenesis of a critical tryptophan in the "minor groove binding track" of HIV-1 reverse transcriptase. Major groove DNA adducts identify specific protein interactions in the minor groove.
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Beard WA
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2000
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The Journal of biological chemistry
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DNA polymerase beta and mammalian base excision repair.
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Beard WA
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2000
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Cold Spring Harbor symposia on quantitative biology
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Structural design of a eukaryotic DNA repair polymerase: DNA polymerase beta.
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Beard WA
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2000
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Mutation research
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Minor groove interactions at the DNA polymerase beta active site modulate single-base deletion error rates.
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Beard WA
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2000
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The Journal of biological chemistry
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Residues in the alphaH and alphaI helices of the HIV-1 reverse transcriptase thumb subdomain required for the specificity of RNase H-catalyzed removal of the polypurine tract primer.
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Beard WA
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1999
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The Journal of biological chemistry
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Base substitution specificity of DNA polymerase beta depends on interactions in the DNA minor groove.
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Beard WA
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1999
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The Journal of biological chemistry
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Uniquely altered DNA replication fidelity conferred by an amino acid change in the nucleotide binding pocket of human immunodeficiency virus type 1 reverse transcriptase.
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Beard WA
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1999
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The Journal of biological chemistry
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The fidelity of DNA polymerase beta during distributive and processive DNA synthesis.
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Beard WA
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1999
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The Journal of biological chemistry
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Interactions between DNA polymerase beta and the major covalent adduct of the carcinogen (+)-anti-benzo[a]pyrene diol epoxide with DNA at a primer-template junction.
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Beard WA
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1998
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Biochemistry
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Vertical-scanning mutagenesis of a critical tryptophan in the minor groove binding track of HIV-1 reverse transcriptase. Molecular nature of polymerase-nucleic acid interactions.
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Beard WA
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1998
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The Journal of biological chemistry
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Human DNA polymerase beta deoxyribose phosphate lyase. Substrate specificity and catalytic mechanism.
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Beard WA
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1998
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The Journal of biological chemistry
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Functional analysis of the amino-terminal 8-kDa domain of DNA polymerase beta as revealed by site-directed mutagenesis. DNA binding and 5'-deoxyribose phosphate lyase activities.
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Beard WA
|
1998
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The Journal of biological chemistry
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Structural insights into DNA polymerase beta fidelity: hold tight if you want it right.
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Beard WA
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1998
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Chemistry & biology
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Mammalian abasic site base excision repair. Identification of the reaction sequence and rate-determining steps.
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Beard WA
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1998
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The Journal of biological chemistry
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Subunits of human replication protein A are crosslinked by photoreactive primers synthesized by DNA polymerases.
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Beard WA
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1998
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Nucleic acids research
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A minor groove binding track in reverse transcriptase.
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Beard WA
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1997
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Nat Struct Biol
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Probing structure/function relationships of HIV-1 reverse transcriptase with styrene oxide N2-guanine adducts.
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Beard WA
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1997
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The Journal of biological chemistry
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dNTP binding to HIV-1 reverse transcriptase and mammalian DNA polymerase beta as revealed by affinity labeling with a photoreactive dNTP analog.
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Beard WA
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1996
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The Journal of biological chemistry
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Enzyme-DNA interactions required for efficient nucleotide incorporation and discrimination in human DNA polymerase beta.
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Beard WA
|
1996
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The Journal of biological chemistry
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dNTP binding site in rat DNA polymerase beta revealed by controlled proteolysis and azido photoprobe cross-linking.
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Beard WA
|
1996
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Biochemistry
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Role of the "helix clamp" in HIV-1 reverse transcriptase catalytic cycling as revealed by alanine-scanning mutagenesis.
|
Beard WA
|
1996
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The Journal of biological chemistry
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Specific inhibition of DNA polymerase beta by its 14 kDa domain: role of single- and double-stranded DNA binding and 5'-phosphate recognition.
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Beard WA
|
1995
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Nucleic acids research
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Purification and domain-mapping of mammalian DNA polymerase beta.
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Beard WA
|
1995
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Methods in enzymology
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Human immunodeficiency virus type 1 reverse transcriptase. 3'-Azidodeoxythymidine 5'-triphosphate inhibition indicates two-step binding for template-primer.
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Beard WA
|
1995
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The Journal of biological chemistry
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Reduced frameshift fidelity and processivity of HIV-1 reverse transcriptase mutants containing alanine substitutions in helix H of the thumb subdomain.
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Beard WA
|
1995
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The Journal of biological chemistry
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DNA damage-induced transcriptional activation of a human DNA polymerase beta chimeric promoter: recruitment of preinitiation complex in vitro by ATF/CREB.
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Beard WA
|
1995
|
Biochemistry
|
Structure/function studies of human immunodeficiency virus type 1 reverse transcriptase. Alanine scanning mutagenesis of an alpha-helix in the thumb subdomain.
|
Beard WA
|
1994
|
The Journal of biological chemistry
|
Site-directed mutagenesis of HIV reverse transcriptase to probe enzyme processivity and drug binding.
|
Beard WA
|
1994
|
Current opinion in biotechnology
|
Studies of gapped DNA substrate binding by mammalian DNA polymerase beta. Dependence on 5'-phosphate group.
|
Beard WA
|
1994
|
The Journal of biological chemistry
|
Expression and purification of the HIV-1 reverse transcriptase using the baculovirus expression vector system.
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Beard WA
|
1993
|
Protein expression and purification
|
HIV-1 reverse transcriptase: inhibition by 2',5'-oligoadenylates.
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Beard WA
|
1993
|
Biochemistry
|
Structure/function studies of HIV-1(1) reverse transcriptase: dimerization-defective mutant L289K.
|
Beard WA
|
1993
|
Biochemistry
|
Kinetic analysis of template.primer interactions with recombinant forms of HIV-1 reverse transcriptase.
|
Beard WA
|
1993
|
Biochemistry
|