Results 11 to 20 of about 189,964 (332)
BIO-PROTOCOL, 2014 Helicases are a class of enzymes which are motor proteins using energy derived from ATP hydrolysis to move directionally along a nucliec acid phosphodiester backbone (such as DNA, RNA and DNA-RNA hybrids) and separate two annealed nucleic acid strands. Many cellular processes, such as transcription, DNA replication, recombination and DNA repair involve
Xin Wang +3 more
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A helicase-tethered ORC flip enables bidirectional helicase loading [PDF]
eLife, 2021 Replication origins are licensed by loading two Mcm2-7 helicases around DNA in a head-to-head conformation poised to initiate bidirectional replication. This process requires origin–recognition complex (ORC), Cdc6, and Cdt1. Although different Cdc6 and Cdt1 molecules load each helicase, whether two ORC proteins are required is unclear.
Shalini Gupta +3 more
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Frontiers in Microbiology, 2018 Chromosomal replication initiation requires dynamic mechanisms in higher-order nucleoprotein complexes that are constructed at the origin of replication.
Yukari Sakiyama +5 more
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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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A conserved Mcm4 motif is required for Mcm2-7 double-hexamer formation and origin DNA unwinding
eLife, 2019 Licensing of eukaryotic origins of replication requires DNA loading of two copies of the Mcm2-7 replicative helicase to form a head-to-head double-hexamer, ensuring activated helicases depart the origin bidirectionally.
Kanokwan Champasa +4 more
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The Nuclease Activity of the Yeast Dna2 Protein, Which Is Related to the RecB-like Nucleases, Is Essential in Vivo [PDF]
, 2000 Saccharomyces cerevisiae Dna2 protein is required for DNA replication and repair and is associated with multiple biochemical activities: DNA-dependent ATPase, DNA helicase, and DNA nuclease.
Budd, Martin E. +2 more
core +1 more source
eLife, 2016 Replisome assembly requires the loading of replicative hexameric helicases onto origins by AAA+ ATPases. How loader activity is appropriately controlled remains unclear.
Iris V Hood, James M Berger
doaj +1 more source
European Journal of Biology, 2022 Objective: Coronavirus Disease 2019 (COVID19) is a viral disease caused by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS CoV-2). The high mutation propensity of the SARS CoV-2 genome is one of the biggest threats to the long-term validity of ...
Ekrem Akbulut
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Helicase activity on DNA as a propagating front [PDF]
, 2003 We develop a propagating front analysis, in terms of a local probability of zipping, for the helicase activity of opening up a double stranded DNA (dsDNA).
Alberts B. +5 more
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Cold Spring Harbor Symposia on Quantitative Biology, 1979 In summary, we postulate that DNA unwinding and ATP dephosphorylation are coupled in different ways, depending on whether the fibrous ATPase or one of the globular ATPases provides the catalytic agent. Unanswered is the question of whether there is stoichiometry of ATP utilization during the unwinding of a duplex, and unsolved is the role of the ...
Kuhn, B. +2 more
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