منابع مشابه
ecific endonucleases: implications or nucleotide excision repair
Structure-specific nucleases catalyze critical reactions in DNA replication, recombination, and repair. Recently, a structure-specific endonuclease, FEN-l, has been purified and shown to cleave DNA flap structures. Here, we describe the cloning of the murine FEN-1 gene. The nucleotide sequence of FEN-I is highly homologous to the 8accharomyces cerevisiae genes YKL510 and RAD2. We show that YKLS...
متن کاملSubstrate preference of Gen endonucleases highlights the importance of branched structures as DNA damage repair intermediates
Human GEN1 and yeast Yen1 are endonucleases with the ability to cleave Holliday junctions (HJs), which are proposed intermediates in recombination. In vivo, GEN1 and Yen1 function secondarily to Mus81, which has weak activity on intact HJs. We show that the genetic relationship is reversed in Drosophila, with Gen mutants having more severe defects than mus81 mutants. In vitro, DmGen, like HsGEN...
متن کاملApurinic/apyrimidinic endonucleases in repair of pyrimidine dimers and other lesions in DNA.
The characteristics of the nicks (single-strand breaks) introduced into damaged DNA by Escherichia coli endonucleases III, IV, and VI and by phage T4 UV endonuclease have been investigated with E. coli DNA polymerase I (DNA nucleotidyltransferase). Nicks introduced into depurinated DNA by endonuclease IV or VI provide good primer termini for the polymerase, whereas nicks introduced into depurin...
متن کاملHuman SLX4 Is a Holliday Junction Resolvase Subunit that Binds Multiple DNA Repair/Recombination Endonucleases
Structure-specific endonucleases resolve DNA secondary structures generated during DNA repair and recombination. The yeast 5' flap endonuclease Slx1-Slx4 has received particular attention with the finding that Slx4 has Slx1-independent key functions in genome maintenance. Although Slx1 is a highly conserved protein in eukaryotes, no orthologs of Slx4 were reported other than in fungi. Here we r...
متن کاملSelfish DNA: New Abode for Homing Endonucleases
A 30-year old conundrum concerning the genetics of T-even bacteriophages has at last been solved, the answer turning out to involve free-standing homologs of intron-encoded homing endonucleases.
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ژورنال
عنوان ژورنال: Journal of Biomolecular Screening
سال: 2015
ISSN: 1087-0571,1552-454X
DOI: 10.1177/1087057115581581