Results 91 to 100 of about 47,217 (278)

From promoting to inhibiting: diverse roles of helicases in HIV-1 Replication

Retrovirology, 2012
Helicases hydrolyze nucleotide triphosphates (NTPs) and use the energy to modify the structures of nucleic acids. They are key players in every cellular process involving RNA or DNA. Human immunodeficiency virus type 1 (HIV-1) does not encode a helicase,
Lorgeoux Rene-Pierre, Guo Fei, Liang Chen   +2 more
doaj   +1 more source

Nucleosome-directed replication origin licensing independent of a consensus DNA sequence

Nature Communications, 2022
Most eukaryotes do not use a consensus DNA sequence as binding sites for the origin recognition complex (ORC) to initiate DNA replication, however budding yeast do. Here the authors show S. cerevisiae ORC can bind nucleosomes near nucleosome-free regions
Sai Li, Michael R. Wasserman, Olga Yurieva, Lu Bai, Michael E. O’Donnell, Shixin Liu   +5 more
doaj   +1 more source

Srs2 promotes synthesis-dependent strand annealing by disrupting DNA polymerase δ-extending D-loops. [PDF]

, 2017
Synthesis-dependent strand annealing (SDSA) is the preferred mode of homologous recombination in somatic cells leading to an obligatory non-crossover outcome, thus avoiding the potential for chromosomal rearrangements and loss of heterozygosity.
Ede, Christopher, Freudenthal, Bret D, Gore, Steven K, Heyer, Wolf-Dietrich, Jenkins, Shirin S, Liu, Jie, Todd Washington, M, Veaute, Xavier, Wright, William D   +8 more
core   +3 more sources

G4‐Ligand‐Directed PROTACs Unveil DR1 as a Novel Ligand‐Co‐Binding G4‐Protein and Reshape G4‐Dependent Transcription

Advanced Science, EarlyView.
G4‐binding proteins (G4BPs) that specifically co‐bind G4s in the presence of small‐molecule ligands represent a critical but unexplored class of proteins. We introduce G4‐Ligand‐Directed PROTACs (G4L‐TACs), a chemical platform that couples G4 ligands (PDS) to E3 recruiters to selectively degrade these ligand‐co‐binding G4BPs.
Mao‐Lin Li, Shu‐Min Xu, Xin‐Chen Jiang, Le‐Tian Dai, Yu‐Tao Hu, Kai‐Bo Wang, Jia‐Heng Tan, Zhi‐Shu Huang, Shuo‐Bin Chen   +8 more
wiley   +1 more source

DNA helicase 3.6.4.12

, 2013
EC number  3.6.4.12 Systematic name  ATP phosphohydrolase (DNA helix unwinding) Recommended name  DNA helicase Synonyms  3’ to 5’ DNA helicase [35]  3’-5’ DNA helicase [55]  3’-5’ PfDH [55]  5’ to 3’ DNA helicase [19,42]  AvDH1 [37]  BACH1 helicase [34]  BLM [28]  BLM protein [28]  BRCA1-associated C-terminal helicase [34]  BcMCM [52]  CeWRN ...
Schomburg, Dietmar, Schomburg, Ida
openaire   +1 more source

How Does a Helicase Unwind DNA? Insights from RecBCD Helicase [PDF]

BioEssays, 2018
DNA helicases are a class of molecular motors that catalyze processive unwinding of double stranded DNA. In spite of much study, we know relatively little about the mechanisms by which these enzymes carry out the function for which they are named. Most current views are based on inferences from crystal structures. A prominent view is that the canonical
Timothy M, Lohman, Nicole T, Fazio
openaire   +2 more sources

SETD1A Regulates Glycolysis and Senescence of Nucleus Pulposus Cells via H3K4me3–HELZ2/PPARα‐HIF1α Axis to Drive Intervertebral Disc Degeneration

Advanced Science, EarlyView.
SETD1A is a key epigenetic regulator in NPCs during IDD. In normal NPCs, it sustains H3K4me3–HELZ2/PPARα–HIF1α signaling to maintain glycolytic energy metabolism and proliferation. In degenerated NPCs, reduced SETD1A disrupts this axis, impairing glycolysis and accelerating senescence, highlighting a promising therapeutic target for IDD.
Jiawei Fu, Xue Leng, Jiang Long, Zhengao Liao, Xiaoqin An, Xuezheng Ai, Dan Long, Changqing Li, Bo Huang, Yue Zhou, Shiwu Dong, Chencheng Feng   +11 more
wiley   +1 more source

Processing of G4 DNA by Dna2 Helicase/nuclease and RPA provides insights into the mechanism of Dna2/RPA substrate recognition [PDF]

, 2008
The polyguanine-rich DNA sequences commonly found at telomeres and in rDNA arrays have been shown to assemble into structures known as G quadruplexes, or G4 DNA, stabilized by base-stacked G quartets, an arrangement of four hydrogen-bonded guanines.
Campbell, Judith L., Chen, Lu, Masuda-Sasa, Taro, Peng, Xiao P., Polaczek, Piotr   +4 more
core  

Sensing and Filtering Environmental Fluctuations: The Case of Biomolecular Condensates in Plants

Advanced Science, EarlyView.
The diversity of plant condensates reflects constraints of sessile organisms to coordinate postembryonic development with environmental adaptation. This review examines how plants employ condensates to integrate temperature, light, redox, and nutrient signals.
Panagiotis N. Moschou, Dorothee Staiger
wiley   +1 more source

Coordination of Nucleases and Helicases during DNA Replication and Double-strand Break Repair [PDF]

, 2009
Nucleases and helicases are involved in numerous steps in DNA replication and repair. Nucleases act on intermediates in DNA replication created by DNA polymerases (Chapter 4) and helicases (Chapter 3).
Budd, Martin E., Cox, Lynne S., Campbell, Judith L.   +2 more
core   +4 more sources