Results 31 to 40 of about 191,259 (287)
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
Eukaryotic DNA helicases [PDF]
FEBS Letters, 1990 DNA is very stable in its double‐stranded form. For many processes of DNA metabolism, such as replication, repair, recombination and transcription, the DNA has to be brought transiently into a single‐stranded form. DNA helicases are enzymes capable of melting the hydrogen bonds of base pairs by using the energy of nucleoside‐5'‐triphosphate hydrolysis.
Ulrich Hübscher, Pia Thömmes
openaire +3 more sources
Free-energy simulations reveal molecular mechanism for functional switch of a DNA helicase
eLife, 2018 Helicases play key roles in genome maintenance, yet it remains elusive how these enzymes change conformations and how transitions between different conformational states regulate nucleic acid reshaping.
Wen Ma +4 more
doaj +1 more source
m6A in mRNA coding regions promotes translation via the RNA helicase-containing YTHDC2
Nature Communications, 2019 Dynamic mRNA modification in the form of N6-methyladenosine (m6A) adds considerable richness and sophistication to gene regulation. The m6A mark is asymmetrically distributed along mature mRNAs, with approximately 35% of m6A residues located within the ...
Yuanhui Mao +6 more
semanticscholar +1 more source
Molecules, 2020 This short review is focused on enzymatic properties of human ATP-dependent RNA helicase DDX3 and the development of antiviral and anticancer drugs targeting cellular helicases.
M. Kukhanova, I. Karpenko, A. Ivanov
semanticscholar +1 more source
Duplex DNA from Sites of Helicase-Polymerase Uncoupling Links Non-B DNA Structure Formation to Replicative Stress [PDF]
, 2020 BACKGROUND: Replication impediments can produce helicase-polymerase uncoupling allowing lagging strand synthesis to continue for as much as 6 kb from the site of the impediment.
Abdelhamid, Mahmoud A S +9 more
core +2 more sources
Nature Structural & Molecular Biology, 2006 Recent additions to the helicase family include motor proteins that do not actually unwind DNA, but rather translocate it. By sensing short polar sequences that orient the bacterial chromosome, the FtsK helicase translocates DNA so as to align the termini of replicated chromosomes with each other, facilitating the late stages of chromosome segregation.
Strick, Terence, Quessada-Vial, Audrey
openaire +3 more sources
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
doaj +1 more source
Sweet Melody or Jazz? Transcription Around DNA Double-Strand Breaks
Frontiers in Molecular Biosciences, 2021 Genomic integrity is continuously threatened by thousands of endogenous and exogenous damaging factors. To preserve genome stability, cells developed comprehensive DNA damage response (DDR) pathways that mediate the recognition of damaged DNA lesions ...
Qilin Long +2 more
doaj +1 more source
WRN Helicase is a Synthetic Lethal Target in Microsatellite Unstable Cancers
Nature, 2019 Synthetic lethality—an interaction between two genetic events through which the co-occurrence of these two genetic events leads to cell death, but each event alone does not—can be exploited for cancer therapeutics1.
Edmond M. Chan +40 more
semanticscholar +1 more source