Results 51 to 60 of about 7,004 (177)

Kinetics of the Action of Thymine DNA Glycosylase [PDF]

Journal of Biological Chemistry, 1998
The time course of removal of thymine by thymine DNA glycosylase has been measured in vitro. Each molecule of thymine DNA glycosylase removes only one molecule of thymine from DNA containing a G.T mismatch because it binds tightly to the apurinic DNA site left after removal of thymine.
T R, Waters, P F, Swann
openaire   +2 more sources

An Integrated DNA Nanoprobe for Intranuclear Imaging and in Situ Profiling of OGG1 Activity

Advanced Science, EarlyView.
The TP‐SA nanoprobe, integrating an AS1411 aptamer for nuclear delivery and a FRET array for signal amplification, enables real‐time tracking of nuclear OGG1 activity. It reveals cell‐line‐specific basal OGG1 levels and shows clinical promise using pneumonia patients’ lavage fluid.
Mingzhu Zhao, Xuemei Sun, He Li, Bangming Wang, Mengting Pan, Zhen Ma, Rong‐Mei Kong, Weiheng Kong, Yan Zhao, Fengli Qu   +9 more
wiley   +1 more source

Modulation of the Turnover of Formamidopyrimidine DNA Glycosylase [PDF]

Biochemistry, 2006
In recent years, significant progress has been made in determining the catalytic mechanisms by which base excision repair (BER) DNA glycosylases and glycosylase-abasic site (AP) lyases cleave the glycosyl bond. While these investigations have identified active site residues and active site architectures, few investigations have analyzed postincision ...
Michael B, Harbut, Michael, Meador, M L, Dodson, R S, Lloyd   +3 more
openaire   +2 more sources

Synergistic HMGN1 and VP64 Fusions Potentiate High‐Precision and PAM‐Flexible Base Editing

Advanced Science, EarlyView.
A novel CDA1Δ‐SpRY architecture fused with HMGN1 and VP64 yields a nearly PAM‐less base editing platform. By focusing cytosine conversion predominantly at position −18, this synergistic complex ensures highly precise targeting. Demonstrating enhanced efficiency across diverse models, including yeast and rice, the platform offers a robust solution for ...
Xi Luo, Yuyao Qu, Zhengyan Ye, Zheng Li, Yuanyan Zhang, Longjiong Luo, Shaokang Li, Wei Zhao, Ming Wang, Ralph Bock, Jianmin Wan, Junjie Tan   +11 more
wiley   +1 more source

Characterization of demethylating DNA glycosylase ROS1 from Nicotiana tabacum L.

Вавиловский журнал генетики и селекции, 2022
One of the main mechanisms of epigenetic regulation in higher eukaryotes is based on the methylation of cytosine at the C5 position with the formation of 5-methylcytosine (mC), which is further recognized by regulatory proteins.
D. V. Petrova, N. V. Permyakova, I. R. Grin, D. O. Zharkov   +3 more
doaj   +1 more source

Bridging the Gap Between Human Toxicology and Ecotoxicology Under One Health Perspective by a Cross‐Species Adverse Outcome Pathway Network for Reproductive Toxicity

Environmental Toxicology and Chemistry, EarlyView.
Cross‐species extrapolation of adverse outcome pathway network on reproductive toxicity under the One Health perspective using new approach methodologies. AOP = adverse outcome pathway. Abstract Although ecotoxicological and toxicological risk assessments are performed separately from each other, recent efforts have been made in both disciplines to ...
Elizabeth Dufourcq Sekatcheff, Jaeseong Jeong, Jinhee Choi   +2 more
wiley   +1 more source

Chemical Biology of Mammalian DNA Repair

CHIMIA, 2001
Damage to the heterocyclic bases of DNA in the genome is mainly corrected by the base excision repair (BER) or nucleotide excision repair (NER) pathways.
Orlando D. Schärer
doaj   +2 more sources

Thymine DNA Glycosylase Is a CRL4Cdt2 Substrate [PDF]

Journal of Biological Chemistry, 2014
The E3 ubiquitin ligase CRL4(Cdt2) targets proteins for destruction in S phase and after DNA damage by coupling ubiquitylation to DNA-bound proliferating cell nuclear antigen (PCNA). Coupling to PCNA involves a PCNA-interacting peptide (PIP) degron motif in the substrate that recruits CRL4(Cdt2) while binding to PCNA.
Tamara J, Slenn, Benjamin, Morris, Courtney G, Havens, Robert M, Freeman, Tatsuro S, Takahashi, Johannes C, Walter   +5 more
openaire   +2 more sources

Detection of Damaged DNA Bases by DNA Glycosylase Enzymes [PDF]

Biochemistry, 2010
A fundamental and shared process in all forms of life is the use of DNA glycosylase enzymes to excise rare damaged bases from genomic DNA. Without such enzymes, the highly ordered primary sequences of genes would rapidly deteriorate. Recent structural and biophysical studies are beginning to reveal a fascinating multistep mechanism for damaged base ...
Joshua I, Friedman, James T, Stivers
openaire   +2 more sources

Antibiotic Remodeling of the Gut Microbiota Impairs Host Resistance to Secondary Infection

iMetaMed, EarlyView.
Gut microbial dynamics induced by four antibiotics, revealed distinct taxonomic and functional shifts. Vancomycin‐perturbed bacteriomes were proven to promote pathogen resistance to antibiotic treatment. Metronidazole‐treated mice showed pronounced Salmonella translocation to hepatic tissue, and altered Enterococcus avium populations modulated host ...
Miaoyu Li, Ying Chen, Xi Chen, Weili Lu, Jie Liao, Jiaqi Wang, Qiwei Liu, Yanzi Chang, Zeping Xu, Yanye Tu, Yang Zhou, Jing Xue, Binbin Wang, Kang Chen, Keyun Cheng, Chunlai Zeng, Hong Li, Qing Shen   +17 more
wiley   +1 more source