Results 101 to 110 of about 44,346 (216)

The trajectory of intrahelical lesion recognition and extrusion by the human 8-oxoguanine DNA glycosylase

open access: yesNature Communications, 2020
DNA glycosylases are lesion-specific enzymes that recognize specific nucleobase damages and catalyze their excision through cleavage of the glycosidic bond.
Uddhav K. Shigdel   +6 more
doaj   +1 more source

Expression and the Peculiar Enzymatic Behavior of the Trypanosoma cruzi NTH1 DNA Glycosylase. [PDF]

open access: yesPLoS ONE, 2016
Trypanosoma cruzi, the etiological agent of Chagas' disease, presents three cellular forms (trypomastigotes, epimastigotes and amastigotes), all of which are submitted to oxidative species in its hosts. However, T.
Fernando Ormeño   +10 more
doaj   +1 more source

Life without dUTPase [PDF]

open access: yes, 2016
Fine-tuned regulation of the cellular nucleotide pools is indispensable for faithful replication of Deoxyribonucleic Acid (DNA). The genetic information is also safeguarded by DNA damage recognition and repair processes.
Altschul   +48 more
core   +2 more sources

DNA glycosylases in the base excision repair of DNA [PDF]

open access: yesBiochemical Journal, 1997
A wide range of cytotoxic and mutagenic DNA bases are removed by different DNA glycosylases, which initiate the base excision repair pathway. DNA glycosylases cleave the N-glycosylic bond between the target base and deoxyribose, thus releasing a free base and leaving an apurinic/apyrimidinic (AP) site.
H E, Krokan, R, Standal, G, Slupphaug
openaire   +2 more sources

Genome‐wide and gene‐specific DNA methylation across developmental stages in Pogonomyrmex californicus: A socially polymorphic ant

open access: yesInsect Molecular Biology, EarlyView.
Comparison between developmental stages (larvae, pupae, worker) in Pogonomyrmex californicus revealed significant stage‐specific differences in Gene Body Methylated frequencies. Methylation sites were highly correlated between WGBS and ONT in P. californicus Genome‐wide methylation was low (~3%) and highly clustered within gene bodies (GBM), especially
Tania Chavarria‐Pizarro   +4 more
wiley   +1 more source

The E3 Ubiquitin Ligase NEDD4L Targets OGG1 for Ubiquitylation and Modulates the Cellular DNA Damage Response

open access: yesFrontiers in Cell and Developmental Biology, 2020
8-Oxoguanine DNA glycosylase (OGG1) is the major cellular enzyme required for the excision of 8-oxoguanine DNA base lesions in DNA through the base excision repair (BER) pathway, and therefore plays a major role in suppressing mutagenesis and in ...
Jonathan R. Hughes   +2 more
doaj   +1 more source

7,8-dihydro-8-oxoadenine, a highly mutagenic adduct, is repaired by Escherichia coli and human mismatch-specific uracil/thymine-DNA glycosylases [PDF]

open access: yes, 2017
Hydroxyl radicals predominantly react with the C8 of purines forming 7,8-dihydro-8-oxoguanine (8oxoG) and 7,8-dihydro-8-oxoadenine (8oxoA) adducts, which are highly mutagenic in mammalian cells.
Couvé, Sophie   +5 more
core  

Thymine DNA glycosylase specifically recognizes 5-carboxylcytosine-modified DNA [PDF]

open access: yesNature Chemical Biology, 2012
Human thymine DNA glycosylase (hTDG) efficiently excises 5-carboxylcytosine (5caC), a key oxidation product of 5-methylcytosine in genomic DNA, in a recently discovered cytosine demethylation pathway. We present here the crystal structures of the hTDG catalytic domain in complex with duplex DNA containing either 5caC or a fluorinated analog.
Zhang, Liang   +8 more
openaire   +2 more sources

Coupling of both a transactivation module and a double‐stranded DNA‐binding domain boosts Cas12i3 variant‐based cytosine and adenine editing in plants

open access: yesJournal of Integrative Plant Biology, EarlyView.
Fusions of a transactivation module and a double‐stranded DNA‐binding domain produced effective Cas12i3 variant‐based cytosine and adenine base editors, with improved C‐to‐T and A‐to‐G base editing efficiency and expanded editing window. Generated herbicide‐resistant rice germplasm by using these base editors demonstrates their potential for precise ...
Chen Zhang   +7 more
wiley   +1 more source

Impact of Helicobacter pylori Infection and Its Major Virulence Factor CagA on DNA Damage Repair

open access: yesMicroorganisms, 2020
Helicobacter pylori infection induces a plethora of DNA damages. Gastric epithelial cells, in order to maintain genomic integrity, require an integrous DNA damage repair (DDR) machinery, which, however, is reported to be modulated by the infection.
Eleftherios Kontizas   +6 more
doaj   +1 more source

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