Search Results - "Burdzy, Artur"
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Repair of the mutagenic DNA oxidation product, 5-formyluracil
Published in DNA repair (03-02-2003)“…The oxidation of the thymine methyl group can generate 5-formyluracil (FoU). Template FoU residues are known to miscode, generating base substitution…”
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Characterization of the Substrate Specificity of a Human 5-Hydroxymethyluracil Glycosylase Activity
Published in Chemical research in toxicology (01-01-2002)“…The oxidation of pyrimidine 5-methyl groups, derived from either thymine or 5-methylcytosine, can generate 5-hydroxymethyluracil (HmU) in DNA. An activity from…”
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Oxidative damage to methyl-CpG sequences inhibits the binding of the methyl-CpG binding domain (MBD) of methyl-CpG binding protein 2 (MeCP2)
Published in Nucleic acids research (2004)“…Cytosine methylation in CpG dinucleotides is believed to be important in gene regulation, and is generally associated with reduced levels of transcription…”
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4
Chemical Decomposition of 5-Aza-2′-deoxycytidine (Decitabine): Kinetic Analyses and Identification of Products by NMR, HPLC, and Mass Spectrometry
Published in Chemical research in toxicology (01-06-2009)“…The nucleoside analogue 5-aza-2′-deoxycytidine (Decitabine, DAC) is one of several drugs in clinical use that inhibit DNA methyltransferases, leading to a…”
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5
Impact of Sugar Pucker on Base Pair and Mispair Stability
Published in Biochemistry (Easton) (22-12-2009)“…The selection of nucleoside triphosphates by a polymerase is controlled by several energetic and structural features, including base pairing geometry as well…”
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Characterization of synthetic oligonucleotides containing biologically important modified bases by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry
Published in Analytical biochemistry (15-08-2008)“…Oligonucleotides containing modified bases are commonly used for biochemical and biophysical studies to assess the impact of specific types of chemical damage…”
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5-Halogenated pyrimidine lesions within a CpG sequence context mimic 5-methylcytosine by enhancing the binding of the methyl-CpG-binding domain of methyl-CpG-binding protein 2 (MeCP2)
Published in Nucleic acids research (01-01-2005)“…Perturbations in cytosine methylation signals are observed in the majority of human tumors; however, it is as yet unknown how methylation patterns become…”
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Substrate Recognition by a Family of Uracil-DNA Glycosylases: UNG, MUG, and TDG
Published in Chemical research in toxicology (01-08-2002)“…In response to continuous hydrolytic and oxidative DNA damage, cells of all organisms have a complex network of repair systems that recognize, remove, and…”
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Characterization of synthetic oligonucleotides containing biologically important modified bases by MALDI-TOF mass spectrometry
Published in Analytical biochemistry (25-04-2008)“…Oligonucleotides containing modified bases are commonly used for biochemical and biophysical studies to assess the impact of specific types of structural…”
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10
5-Formyluracil-Induced Perturbations of DNA Function
Published in Biochemistry (Easton) (18-05-2004)“…Oxidation of the thymine methyl group can generate 5-formyluracil (FoU), which is known to be both mutagenic and chemically unstable in DNA. Synthetic…”
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Measurement of the Incorporation and Repair of Exogenous 5-Hydroxymethyl-2′-deoxyuridine in Human Cells in Culture Using Gas Chromatography-Negative Chemical Ionization-Mass Spectrometry
Published in Chemical research in toxicology (01-12-2007)“…The DNA of all organisms is constantly damaged by oxidation. Among the array of damage products is 5-hydroxymethyluracil, derived from oxidation of the thymine…”
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Synthesis of stable‐isotope enriched 5‐methylpyrimidines and their use as probes of base reactivity in DNA
Published in Nucleic acids research (15-09-2002)“…A specific and efficient method is presented for the conversion of 2′‐deoxyuridine to thymidine via formation and reduction of the intermediate 5‐hydroxymethyl…”
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13
Synthesis and Characterization of Oligonucleotides Containing 5-Chlorocytosine
Published in Chemical research in toxicology (01-09-2004)“…Recent studies have shown that reactive chlorine species, derived from myeloperoxidase-mediated inflammation responses, can modify DNA bases, generating…”
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14
Endogenous DNA Lesions Can Inhibit the Binding of the AP-1 (c-Jun) Transcription Factor
Published in Biochemistry (Easton) (25-06-2002)“…The repair of DNA damage, caused by both endogenous and exogenous sources, is necessary to remove lesions that either miscode or block DNA or RNA polymerases…”
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15
Influence of Local Duplex Stability and N 6-Methyladenine on Uracil Recognition by Mismatch-Specific Uracil-DNA Glycosylase (Mug)
Published in Chemical research in toxicology (01-12-2002)“…To maintain genomic integrity, DNA repair enzymes continually remove damaged bases and lesions resulting from endogenous and exogenous processes. These repair…”
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Influence of Local Duplex Stability and N6-Methyladenine on Uracil Recognition by Mismatch-Specific Uracil-DNA Glycosylase (Mug)
Published in Chemical research in toxicology (01-12-2002)“…To maintain genomic integrity, DNA repair enzymes continually remove damaged bases and lesions resulting from endogenous and exogenous processes. These repair…”
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DNA ligases ensure fidelity by interrogating minor groove contacts
Published in Nucleic acids research (01-01-2004)“…DNA ligases, found in both prokaryotes and eukaryotes, covalently link the 3′-hydroxyl and 5′-phosphate ends of duplex DNA segments. This reaction represents a…”
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Acid promoted transformations of fluorescent luminarosine and its 2'-modified analogues
Published in Acta biochimica polonica (01-01-1998)“…The susceptibility of highly fluorescent luminarine nucleosides to acid promoted anomerization reactions has been studied in order to select a derivative with…”
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