Results 21 to 30 of about 43,846 (273)
Cyclocytidine hydrochloride inhibits the synthesis of relaxed circular DNA of hepatitis B virus [PDF]
PeerJ, 2022 Background Cyclocytidine hydrochloride (HCl) has been reported to inhibit DNA synthesis by affecting DNA polymerase. Here, we tested the antiviral effect of cyclocytidine on hepatitis B virus (HBV) DNA synthesis, which is reliant on DNA polymerase ...
Xue Wang +7 more
doaj +2 more sources
Bacteriophage PRD1 DNA polymerase: evolution of DNA polymerases. [PDF]
Proceedings of the National Academy of Sciences, 1987 A small lipid-containing bacteriophage PRD1 specifies its own DNA polymerase that utilizes terminal protein as a primer for DNA synthesis. The PRD1 DNA polymerase gene has been sequenced, and its amino acid sequence has been deduced. This protein-primed DNA polymerase consists of 553 amino acid residues with a calculated molecular weight of 63,300 ...
Guhung Jung +3 more
openaire +3 more sources
Accuracy and speed of elongation in a minimal model of DNA replication [PDF]
, 2021 Being a dual purpose enzyme, the DNA polymerase is responsible for elongation of the newly formed DNA strand as well as cleaving the erroneous growth in case of a misincorporation. The efficiency of replication depends on the coordination of the polymerization and exonuclease activity of DNA polymerase.
arxiv +1 more source
Kinetics and thermodynamics of exonuclease-deficient DNA polymerases [PDF]
Phys. Rev. E 93, 042419 (2016), 2016 A kinetic theory is developed for exonuclease-deficient DNA polymerases, based on the experimental observation that the rates depend not only on the newly incorporated nucleotide, but also on the previous one, leading to the growth of Markovian DNA sequences from a Bernoullian template. The dependences on nucleotide concentrations and template sequence
arxiv +1 more source
A nuclear family A DNA polymerase from Entamoeba histolytica bypasses thymine glycol. [PDF]
PLoS Neglected Tropical Diseases, 2010 BACKGROUND: Eukaryotic family A DNA polymerases are involved in mitochondrial DNA replication or translesion DNA synthesis. Here, we present evidence that the sole family A DNA polymerase from the parasite protozoan E.
Guillermo Pastor-Palacios +2 more
doaj +1 more source
Computational Investigations on Polymerase Actions in Gene Transcription and Replication Combining Physical Modeling and Atomistic Simulations [PDF]
Chin. Phys. B Vol. 25, No. 1 (2016) 018706, 2015 Polymerases are protein enzymes that move along nucleic acid chains and catalyze template-based polymerization reactions during gene transcription and replication. The polymerases also substantially improve transcription or replication fidelity through the non-equilibrium enzymatic cycles.
arxiv +1 more source
Mismatch repair in recombination of bacteriophage T4
Biomolecular Concepts, 2012 The review focuses on the mechanism of mismatch repair in bacteriophage T4. It was first observed in T4 as an extra recombination mechanism, which contributed to the general recombination only when particular rII mutations were used as genetic markers ...
Shcherbakov Victor P.
doaj +1 more source
Promutagenicity of 8-Chloroguanine, A Major Inflammation-Induced Halogenated DNA Lesion
Molecules, 2019 Chronic inflammation is closely associated with cancer development. One possible mechanism for inflammation-induced carcinogenesis is DNA damage caused by reactive halogen species, such as hypochlorous acid, which is released by myeloperoxidase to kill ...
Yi Kou, Myong-Chul Koag, Seongmin Lee
doaj +1 more source
DNA polymerases and cancer [PDF]
Nature Reviews Cancer, 2011 There are 15 different DNA polymerases encoded in mammalian genomes, which are specialized for replication, repair or the tolerance of DNA damage. New evidence is emerging for lesion-specific and tissue-specific functions of DNA polymerases. Many point mutations that occur in cancer cells arise from the error-generating activities of DNA polymerases ...
Sabine S. Lange +2 more
openaire +3 more sources
Kinetics and thermodynamics of DNA polymerases with exonuclease proofreading [PDF]
Phys. Rev. E 93, 042420 (2016), 2016 Kinetic theory and thermodynamics are applied to DNA polymerases with exonuclease activity, taking into account the dependence of the rates on the previously incorportated nucleotide. The replication fidelity is shown to increase significantly thanks to this dependence at the basis of the mechanism of exonuclease proofreading.
arxiv +1 more source