The canonical non-homologous end joining factor XLF promotes chromosomal deletion rearrangements in human cells
نویسندگان
چکیده
منابع مشابه
Evolutionary and functional conservation of the DNA non-homologous end-joining protein, XLF/Cernunnos.
Non-homologous end-joining is a major pathway of DNA double-strand break repair in mammalian cells, deficiency in which confers radiosensitivity and immune deficiency at the whole organism level. A core protein complex comprising the Ku70/80 heterodimer together with a complex between DNA ligase IV and XRCC4 is conserved throughout eukaryotes and assembles at double-strand breaks to mediate lig...
متن کاملNon-homologous end-joining partners in a helical dance: structural studies of XLF-XRCC4 interactions.
XRCC4 (X-ray cross-complementation group 4) and XLF (XRCC4-like factor) are two essential interacting proteins in the human NHEJ (non-homologous end-joining) pathway that repairs DNA DSBs (double-strand breaks). The individual crystal structures show that the dimeric proteins are homologues with protomers containing head domains and helical coiled-coil tails related by approximate two-fold symm...
متن کاملModeling non-homologous end joining.
Non-homologous end joining (NHEJ) is an important DNA repair pathway for DNA double-strand breaks. Several proteins, including Ku, DNA-PKcs, Artemis, XRCC4/Ligase IV and XLF, are involved in the NHEJ for the DNA damage detection, DNA free end processing and ligation. The classical model of NHEJ is a sequential model in which DNA-PKcs is first recruited by the Ku bound DNA prior to any other rep...
متن کاملKAP1 Deacetylation by SIRT1 Promotes Non-Homologous End-Joining Repair
Homologous recombination and non-homologous end joining are two major DNA double-strand-break repair pathways. While HR-mediated repair requires a homologous sequence as the guiding template to restore the damage site precisely, NHEJ-mediated repair ligates the DNA lesion directly and increases the risk of losing nucleotides. Therefore, how a cell regulates the balance between HR and NHEJ has b...
متن کامل[Non-homologous DNA end joining].
DNA double strand breaks (DSB) are the most serious form of DNA damage. Repair of DSBs is important to prevent chromosomal fragmentation, translocations and deletions. Non-homologous end joining (NHEJ) is one of three major pathways for the repair of DSBs in human cells. In this process two DNA ends are joined directly, usually with no sequence homology, although in the case of same polarity of...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2020
ISSN: 0021-9258
DOI: 10.1074/jbc.ra119.010421