scholarly journals A human ortholog of archaeal DNA repair protein Hef is defective in Fanconi anemia complementation group M

2005 ◽  
Vol 37 (9) ◽  
pp. 958-963 ◽  
Author(s):  
Amom Ruhikanta Meetei ◽  
Annette L Medhurst ◽  
Chen Ling ◽  
Yutong Xue ◽  
Thiyam Ramsing Singh ◽  
...  
Keyword(s):  
Dna Repair ◽  
Fanconi Anemia ◽  
Complementation Group ◽  
Repair Protein ◽  
Dna Repair Protein ◽  
Human Ortholog

scholarly journals A deficiency in a 230 kDa DNA repair protein in Fanconi anemia complementation group A cells is corrected by the FANCA cDNA

1999 ◽  
Vol 20 (9) ◽  
pp. 1845-1853 ◽  
Author(s):  
Daniel W. Brois ◽  
Laura W. McMahon ◽  
Nydia I. Ramos ◽  
Lynn M. Anglin ◽  
Christopher E. Walsh ◽  
...  
Keyword(s):  
Dna Repair ◽  
Fanconi Anemia ◽  
Complementation Group ◽  
A Cells ◽  
Repair Protein ◽  
Dna Repair Protein ◽  
Group A

scholarly journals Cell cycle–dependent chromatin loading of the Fanconi anemia core complex by FANCM/FAAP24

Blood ◽  
2008 ◽  
Vol 111 (10) ◽  
pp. 5215-5222 ◽  
Author(s):  
Jung Min Kim ◽  
Younghoon Kee ◽  
Allan Gurtan ◽  
Alan D. D'Andrea
Keyword(s):  
Cell Cycle ◽  
Fanconi Anemia ◽  
Cancer Susceptibility ◽  
Bone Marrow Failure ◽  
Core Complex ◽  
Developmental Abnormalities ◽  
Repair Protein ◽  
Dna Repair Protein ◽  
Human Ortholog ◽  
Cycle Dependent

Abstract Fanconi anemia (FA) is a genetic disease characterized by congenital abnormalities, bone marrow failure, and cancer susceptibility. A total of 13 FA proteins are involved in regulating genome surveillance and chromosomal stability. The FA core complex, consisting of 8 FA proteins (A/B/C/E/F/G/L/M), is essential for the monoubiquitination of FANCD2 and FANCI. FANCM is a human ortholog of the archaeal DNA repair protein Hef, and it contains a DEAH helicase and a nuclease domain. Here, we examined the effect of FANCM expression on the integrity and localization of the FA core complex. FANCM was exclusively localized to chromatin fractions and underwent cell cycle–dependent phosphorylation and dephosphorylation. FANCM-depleted HeLa cells had an intact FA core complex but were defective in chromatin localization of the complex. Moreover, depletion of the FANCM binding partner, FAAP24, disrupted the chromatin association of FANCM and destabilized FANCM, leading to defective recruitment of the FA core complex to chromatin. Our results suggest that FANCM is an anchor required for recruitment of the FA core complex to chromatin, and that the FANCM/FAAP24 interaction is essential for this chromatin-loading activity. Dysregulated loading of the FA core complex accounts, at least in part, for the characteristic cellular and developmental abnormalities in FA.

Chemoproteomics-Enabled Discovery of a Potent and Selective Inhibitor of the DNA Repair Protein MGMT

2016 ◽  
Vol 55 (8) ◽  
pp. 2911-2915 ◽  
Author(s):  
Chao Wang ◽  
Daniel Abegg ◽  
Dominic G. Hoch ◽  
Alexander Adibekian
Keyword(s):  
Dna Repair ◽  
Selective Inhibitor ◽  
Repair Protein ◽  
Dna Repair Protein

Partial characterization of the DNA repair protein complex, containing the ERCC1, ERCC4, ERCC11 and XPF correcting activities

1995 ◽  
Vol 337 (1) ◽  
pp. 25-39 ◽  
Author(s):  
A.J. van Vuuren ◽  
E. Appeldoorn ◽  
H. Odijk ◽  
S. Humbert ◽  
V. Moncollin ◽  
...  
Keyword(s):  
Dna Repair ◽  
Protein Complex ◽  
Partial Characterization ◽  
Repair Protein ◽  
Dna Repair Protein

scholarly journals ROS induces NETosis by oxidizing DNA and initiating DNA repair

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Dhia Azzouz ◽  
Meraj A. Khan ◽  
Nades Palaniyar
Keyword(s):  
Dna Damage ◽  
Dna Repair ◽  
Polymerase Activity ◽  
Neutrophil Activation ◽  
Neutrophil Extracellular Trap ◽  
Nuclear Antigen ◽  
Chromatin Decondensation ◽  
Genome Wide ◽  
Repair Protein ◽  
Dna Repair Protein

AbstractReactive oxygen species (ROS) are essential for neutrophil extracellular trap (NET) formation or NETosis. Nevertheless, how ROS induces NETosis is unknown. Neutrophil activation induces excess ROS production and a meaningless genome-wide transcription to facilitate chromatin decondensation. Here we show that the induction of NADPH oxidase-dependent NETosis leads to extensive DNA damage, and the subsequent translocation of proliferating cell nuclear antigen (PCNA), a key DNA repair protein, stored in the cytoplasm into the nucleus. During the activation of NETosis (e.g., by phorbol myristate acetate, Escherichia coli LPS, Staphylococcus aureus (RN4220), or Pseudomonas aeruginosa), preventing the DNA-repair-complex assembly leading to nick formation that decondenses chromatin causes the suppression of NETosis (e.g., by inhibitors to, or knockdown of, Apurinic endonuclease APE1, poly ADP ribose polymerase PARP, and DNA ligase). The remaining repair steps involving polymerase activity and PCNA interactions with DNA polymerases β/δ do not suppress agonist-induced NETosis. Therefore, excess ROS produced during neutrophil activation induces NETosis by inducing extensive DNA damage (e.g., oxidising guanine to 8-oxoguanine), and the subsequent DNA repair pathway, leading to chromatin decondensation.

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