DNA-Histone Cross-Links: Formation and Repair
نویسندگان
چکیده
منابع مشابه
DNA repair defects channel interstrand DNA cross-links into alternate recombinational and error-prone repair pathways.
The repair of psoralen interstrand cross-links in the yeast Saccharomyces cerevisiae involves the DNA repair groups nucleotide excision repair (NER), homologous recombination (HR), and post-replication repair (PRR). In repair-proficient yeast cells cross-links induce double-strand breaks, in an NER-dependent process; the double-strand breaks are then repaired by HR. An alternate error-prone rep...
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In eucaryotic cells, DNA is bound to various proteins and forms a complex nucleoprotein structure called chromatin. Indispensable and ubiquitous chromatin components are histones, small proteins of highly conserved primary structure. Two molecules of each H2A, H2B, H3 and H4 type, form the nucleosomal core around which a 146 base pair (bp) stretch of DNA is wrapped. Histone H1 is bound to about...
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PURPOSE To investigate the possibility of measuring the gene-specific DNA damage after therapeutic exposure to nitrogen mustards and to examine its relationship with the clinical response. EXPERIMENTAL DESIGN The kinetics of gene-specific monoadducts and interstrand cross-link formation/repair were measured in the p53 and N-ras genes. DNA extracted from human peripheral lymphocytes following ...
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Xenobiotic-induced interstrand DNA-DNA cross-links (ICL) interfere with transcription and replication and can be converted to toxic DNA double strand breaks. In this work, we investigated cellular responses to 1,4-bis-(guan-7-yl)-2,3-butanediol (bis-N7G-BD) cross-links induced by 1,2,3,4-diepoxybutane (DEB). High pressure liquid chromatography electrospray ionization tandem mass spectrometry (H...
متن کاملRepair of DNA interstrand cross-links: interactions between homology-dependent and homology-independent pathways.
DNA interstrand cross-links (ICLs) are complex DNA lesions generated by bifunctional alkylating agents, a class of compounds extensively used in cancer chemotherapy. Formation of an ICL covalently links the opposing strands of the double helix and results in severe disruptions of normal DNA functions, such as replication, transcription, and recombination. Because of the structural complexity, I...
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ژورنال
عنوان ژورنال: Frontiers in Cell and Developmental Biology
سال: 2020
ISSN: 2296-634X
DOI: 10.3389/fcell.2020.607045