The RAG1/RAG2 Complex Constitutes a 3′ Flap Endonuclease
نویسندگان
چکیده
منابع مشابه
Flap endonuclease of bacteriophage T7
Gene 6 protein of bacteriophage T7 has 5'-3'-exonuclease activity specific for duplex DNA. We have found that gene 6 protein also has flap endonuclease activity. The flap endonuclease activity is considerably weaker than the exonuclease activity. Unlike the human homolog of gene 6 protein, the flap endonuclease activity of gene 6 protein is dependent on the length of the 5'-flap. This dependenc...
متن کاملFlap Endonuclease 1 Contributes to Telomere Stability
Telomere stability plays an important role in the preservation of genomic stability and is maintained through the coordinated actions of telomere-specific proteins and DNA repair and replication proteins [1, 2]. Flap endonuclease 1 (FEN1) is a protein that plays a role in lagging-strand DNA replication, base excision repair, homologous recombination, and reinitiation of stalled replication fork...
متن کاملNovel function of the flap endonuclease 1 complex in processing stalled DNA replication forks.
Restarting stalled replication forks partly depends on the break-induced recombination pathway, in which a DNA double-stranded break (DSB) is created on the stalled replication fork to initiate the downstream recombination cascades. Single-stranded DNA gaps accumulating on stalled replication forks are potential targets for endonucleases to generate DSBs. However, it is unclear how this process...
متن کاملHuman RECQL5β stimulates flap endonuclease 1
Human RECQL5 is a member of the RecQ helicase family which is implicated in genome maintenance. Five human members of the family have been identified; three of them, BLM, WRN and RECQL4 are associated with elevated cancer risk. RECQL1 and RECQL5 have not been linked to any human disorder yet; cells devoid of RECQL1 and RECQL5 display increased chromosomal instability. Here, we report the physic...
متن کاملAcetylation of Dna2 endonuclease/helicase and flap endonuclease 1 by p300 promotes DNA stability by creating long flap intermediates.
Flap endonuclease 1 (FEN1) and Dna2 endonuclease/helicase (Dna2) sequentially coordinate their nuclease activities for efficient resolution of flap structures that are created during the maturation of Okazaki fragments and repair of DNA damage. Acetylation of FEN1 by p300 inhibits its endonuclease activity, impairing flap cleavage, a seemingly undesirable effect. We now show that p300 also acet...
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ژورنال
عنوان ژورنال: Molecular Cell
سال: 1999
ISSN: 1097-2765
DOI: 10.1016/s1097-2765(00)80223-3