Results 61 to 70 of about 2,395,071 (348)

Human DNA2 possesses a cryptic DNA unwinding activity that functionally integrates with BLM or WRN helicases

open access: yeseLife, 2016
Human DNA2 (hDNA2) contains both a helicase and a nuclease domain within the same polypeptide. The nuclease of hDNA2 is involved in a variety of DNA metabolic processes. Little is known about the role of the hDNA2 helicase. Using bulk and single-molecule
Cosimo Pinto   +3 more
doaj   +1 more source

DNA helicase and helicase–nuclease enzymes with a conserved iron–sulfur cluster

open access: yesNucleic Acids Research, 2012
Conserved Iron–Sulfur (Fe–S) clusters are found in a growing family of metalloproteins that are implicated in prokaryotic and eukaryotic DNA replication and repair.
Yuliang Wu, R. Brosh
semanticscholar   +1 more source

Borrowing Nuclear DNA Helicases to Protect Mitochondrial DNA [PDF]

open access: yesInternational Journal of Molecular Sciences, 2015
In normal cells, mitochondria are the primary organelles that generate energy, which is critical for cellular metabolism. Mitochondrial dysfunction, caused by mitochondrial DNA (mtDNA) mutations or an abnormal mtDNA copy number, is linked to a range of human diseases, including Alzheimer’s disease, premature aging‎ and cancer.
Ding, Lin, Liu, Yilun
openaire   +2 more sources

Investigation of the guanine quadruplex resolving activity of the DEAH-box RNA helicase RHAU [PDF]

open access: yes, 2012
Generally depicted as single- or double-stranded molecules, nucleic acids sequences can adopt various forms of stable secondary structures. In particular, guanine-riche sequence of DNA and RNA can form atypical four-stranded helical structures termed G ...
Lattmann, Simon
core   +1 more source

Heterozygous loss‐of‐function alleles associate the conserved 3′‐5′ exoribonuclease EXOSC10 with hypersensitivity to the anticancer drug 5‐fluorouracil

open access: yesMolecular Oncology, EarlyView.
EXOSC10, an essential nuclear RNA exosome‐associated 3′‐5′ exoribonuclease, is inhibited by the anticancer drug 5‐fluorouracil (5‐FU), and EXOSC10 depletion increases 5‐FU sensitivity. The colon‐cancer variant EXOSC10S402T, located in a proteolysis motif, is stable and nuclear but nonfunctional in vivo.
Radhika Sain   +10 more
wiley   +1 more source

The Human Replicative Helicase, the CMG Complex, as a Target for Anti-cancer Therapy

open access: yesFrontiers in Molecular Biosciences, 2018
DNA helicases unwind or rearrange duplex DNA during replication, recombination and repair. Helicases of many pathogenic organisms such as viruses, bacteria, and protozoa have been studied as potential therapeutic targets to treat infectious diseases, and
Yeon-Soo Seo, Young-Hoon Kang
doaj   +1 more source

The mini-chromosome maintenance (Mcm) complexes interact with DNA polymerase α-primase and stimulate its ability to synthesize RNA primers. [PDF]

open access: yesPLoS ONE, 2013
The Mini-chromosome maintenance (Mcm) proteins are essential as central components for the DNA unwinding machinery during eukaryotic DNA replication. DNA primase activity is required at the DNA replication fork to synthesize short RNA primers for DNA ...
Zhiying You   +4 more
doaj   +1 more source

Bypass of a protein roadblock by a replicative DNA helicase

open access: yesNature, 2012
Replicative DNA helicases generally unwind DNA as a single hexamer that encircles and translocates along one strand of the duplex while excluding the complementary strand (known as steric exclusion).
H. Yardimci   +7 more
semanticscholar   +1 more source

The helicase XPD unwinds bubble structures and is not stalled by DNA lesions removed by the nucleotide excision repair pathway

open access: yes, 2010
Xeroderma pigmentosum factor D (XPD) is a 5'-3' superfamily 2 helicase and the founding member of a family of DNA helicases with iron-sulphur cluster domains.
Rouillon, Christophe   +3 more
core   +1 more source

Snf2 family ATPases and DExx box helicases:differences and unifying concepts from high-resolution crystal structures [PDF]

open access: yes, 2006
Proteins with sequence similarity to the yeast Snf2 protein form a large family of ATPases that act to alter the structure of a diverse range of DNA-protein structures including chromatin. Snf2 family enzymes are related in sequence to DExx box helicases,
Owen-Hughes, Tom; id_orcid   +3 more
core   +1 more source

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