Restricting the ligation step of non-homologous end-joining
نویسندگان
چکیده
منابع مشابه
Modeling 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 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...
متن کاملInteractive competition between homologous recombination and non-homologous end joining.
DNA-dependent protein kinase (DNA-PK), composed of Ku70, Ku80, and the catalytic subunit (DNA-PKcs), is involved in double-strand break (DSB) repair by non-homologous end joining (NHEJ). DNA-PKcs defects confer ionizing radiation sensitivity and increase homologous recombination (HR). Increased HR is consistent with passive shunting of DSBs from NHEJ to HR. We therefore predicted that inhibitin...
متن کاملThe spatial organization of non-homologous end joining: From bridging to end joining
Non-homologous end joining (NHEJ) repairs DNA double-strand breaks generated by DNA damage and also those occurring in V(D)J recombination in immunoglobulin and T cell receptor production in the immune system. In NHEJ DNA-PKcs assembles with Ku heterodimer on the DNA ends at double-strand breaks, in order to bring the broken ends together and to assemble other proteins, including DNA ligase IV ...
متن کاملThe Role of Multimerization During Non-Homologous End Joining
In order to sustain life, cells must protect their genetic information from the constant threat posed by mutagenic agents such as ultraviolet light, irradiation or reactive oxy‐ gen species, as well as from mistakes introduced during the replication of their ge‐ nomes [1]. To deal with this problem, natural selection has favored a system that repairs the damage caused by these DNA lesions while...
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ژورنال
عنوان ژورنال: DNA Repair
سال: 2007
ISSN: 1568-7864
DOI: 10.1016/j.dnarep.2007.09.007