Results 21 to 30 of about 376,771 (302)

ATM Localization and Heterochromatin Repair Depend on Direct Interaction of the 53BP1-BRCT2 Domain with γH2AX

open access: yesCell Reports, 2015
53BP1 plays multiple roles in mammalian DNA damage repair, mediating pathway choice and facilitating DNA double-strand break repair in heterochromatin. Although it possesses a C-terminal BRCT2 domain, commonly involved in phospho-peptide binding in other
Robert A. Baldock   +7 more
doaj   +1 more source

Study of interaction of antimutagenic 1,4-dihydropyridine AV-153-Na with DNA-damaging molecules and its impact on DNA repair activity [PDF]

open access: yesPeerJ, 2018
Background 1,4-dihydropyridines (1,4-DHP) possesses important biochemical and pharmacological properties, including antioxidant and antimutagenic activities. It was shown that the antimutagenic 1,4-dihydropyridine AV-153-Na interacts with DNA. The aim of
Elina Leonova   +5 more
doaj   +2 more sources

DNA damage by peroxynitrite characterized with DNA repair enzymes [PDF]

open access: yesNucleic Acids Research, 1996
The DNA damage induced by peroxynitrite in isolated bacteriophage PM2 DNA was characterized by means of several repair enzymes with defined substrate specificities. Similar results were obtained with peroxynitrite itself and with 3-morpholinosydnonimine (SIN-1), a compound generating the precursors of peroxynitrite, nitric oxide and superoxide.
B, Epe   +4 more
openaire   +2 more sources

Base Flip in DNA Studied by Molecular Dynamics Simulations of Differently-Oxidized Forms of Methyl-Cytosine [PDF]

open access: yes, 2014
: Distortions in the DNA sequence, such as damage or mispairs, are specifically recognized and processed by DNA repair enzymes. Many repair proteins and, in particular, glycosylases flip the target base out of the DNA helix into the enzyme’s active site.
Helabad, Mahdi Bagherpoor   +2 more
core   +3 more sources

Charge-transport-mediated recruitment of DNA repair enzymes [PDF]

open access: yesThe Journal of Chemical Physics, 2008
Damaged or mismatched bases in DNA can be repaired by base excision repair enzymes (BER) that replace the defective base. Although the detailed molecular structures of many BER enzymes are known, how they colocalize to lesions remains unclear. One hypothesis involves charge transport (CT) along DNA [Yavin et al., Proc. Natl. Acad. Sci. U.S.A. 102, 3546
Fok, Pak-Wing, Guo, Chin-Lin, Chou, Tom
openaire   +4 more sources

Specialized interfaces of Smc5/6 control hinge stability and DNA association

open access: yesNature Communications, 2017
Structural Maintenance of Chromosomes (SMC) complexes maintain genome integrity by regulating the segregation of chromosomes. Here, Altet al. describe the structure of the heterodimeric Smc5/6-hinge from fission yeast and define functional features ...
Aaron Alt   +10 more
doaj   +1 more source

Fertilization capacity with rainbow trout DNA-damaged sperm and embryo developmental success [PDF]

open access: yes, 2010
Mammalian spermatozoa undergo a strong selection process along the female tract to guarantee fertilization by good quality cells, but risks of fertilization with DNA-damaged spermatozoa have been reported.
Ahmadi   +31 more
core   +1 more source

siRNA screening of a targeted library of DNA repair factors in HIV infection reveals a role for base excision repair in HIV integration.

open access: yesPLoS ONE, 2011
Host DNA repair enzymes have long been assumed to play a role in HIV replication, and many different DNA repair factors have been associated with HIV.
Amy S Espeseth   +6 more
doaj   +1 more source

Srs2 Disassembles Rad51 Filaments by a Protein-Protein Interaction Triggering ATP Turnover and Dissociation of Rad51 from DNA [PDF]

open access: yes, 2009
Rad51 is a DNA recombinase functioning in the repair of DNA double-strand breaks and the generation of genetic diversity by homologous recombination (HR).
Antony, Edwin   +5 more
core   +2 more sources

Spore photoproduct within DNA is a surprisingly poor substrate for its designated repair enzyme—The spore photoproduct lyase [PDF]

open access: yes, 2017
DNA repair enzymes typically recognize their substrate lesions with high affinity to ensure efficient lesion repair. In UV irradiated endospores, a special thymine dimer, 5-thyminyl-5,6-dihydrothymine, termed the spore photoproduct (SP), is the dominant ...
Jian, Yajun   +3 more
core   +1 more source

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