Results 31 to 40 of about 47,217 (278)
Nucleic Acids Research, 1985 A forked DNA was constructed to serve as a substrate for DNA helicases. It contains features closely resembling a natural replication fork. The DNA was prepared in large amounts and was used to assay displacement activity during isolation from calf thymus DNA polymerases alpha holoenzyme. One form of DNA polymerase alpha holoenzyme is possibly involved
U, Hübscher, H P, Stalder
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Frontiers in Molecular Biosciences, 2022 Maintaining genomic integrity is critical for sustaining individual animals and passing on the genome to subsequent generations. Several enzymes, such as DNA helicases and DNA polymerases, are involved in maintaining genomic integrity by unwinding and ...
Masaoki Kohzaki
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Identification of Five Putative Yeast RNA Helicase Genes [PDF]
, 1990 The RNA helicase gene family encodes a group of eight homologous proteins that share regions of sequence similarity. This group of evolutionarily conserved proteins presumably all utilize ATP (or some other nucleoside triphosphate) as an energy source ...
Abelson, John +2 more
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ATPase mechanism of the 5'-3' DNA helicase, RecD2: evidence for a pre-hydrolysis conformation change [PDF]
, 2013 The superfamily 1 helicase, RecD2, is a monomeric, bacterial enzyme with a role in DNA repair, but with 5'-3' activity unlike most enzymes from this superfamily. Rate constants were determined for steps within the ATPase cycle of RecD2 in the presence of
Bae +34 more
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Quantitative and kinetic single-molecule analysis of DNA unwinding by Escherichia coli UvrD helicase
Biophysics and Physicobiology, 2022 Helicases are nucleic acid-unwinding enzymes involved in the maintenance of genome integrity. Helicases share several “helicase motifs” that are highly conserved amino acid sequences and are classified into six superfamilies (SFs).
Hiroaki Yokota
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Dna2 Helicase/Nuclease Causes Replicative Fork Stalling and Double-strand Breaks in the Ribosomal DNA of Saccharomyces cerevisiae [PDF]
, 2003 We have proposed that faulty processing of arrested replication forks leads to increases in recombination and chromosome instability in Saccharomyces cerevisiae and contributes to the shortened lifespan of dna2 mutants. Now we use the ribosomal DNA locus,
Budd, Martin +3 more
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The Cellular Functions and Molecular Mechanisms of G-Quadruplex Unwinding Helicases in Humans
Frontiers in Molecular Biosciences, 2021 G-quadruplexes (G4s) are stable non-canonical secondary structures formed by G-rich DNA or RNA sequences. They play various regulatory roles in many biological processes.
Yang Liu +11 more
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Unwinding and Rewinding: Double Faces of Helicase?
Journal of Nucleic Acids, 2012 Helicases are enzymes that use ATP-driven motor force to unwind double-stranded DNA or RNA. Recently, increasing evidence demonstrates that some helicases also possess rewinding activity—in other words, they can anneal two complementary single-stranded ...
Yuliang Wu
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Switch-like control of helicase processivity by single-stranded DNA binding protein
eLife, 2021 Helicases utilize nucleotide triphosphate (NTP) hydrolysis to translocate along single-stranded nucleic acids (NA) and unwind the duplex. In the cell, helicases function in the context of other NA-associated proteins such as single-stranded DNA binding ...
Barbara Stekas +6 more
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Rad51/Dmc1 paralogs and mediators oppose DNA helicases to limit hybrid DNA formation and promote crossovers during meiotic recombination [PDF]
, 2014 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original ...
Lorenz, Alexander +3 more
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