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has exonuclease properties that are similar to the human WRN protein
These findings indicate that the coupling of EXO1 activation with its eventual degradation is a timing mechanism that limits the extent of DNA end resection for accurate DNA repair.
Mutations in the human EXO1 gene correlate with increased susceptibility to some cancers. This review summarizes recent studies on the enzymatic functions and biological roles of EXO1, its possible protective role against cancer and aging, and regulation of EXO1 by posttranslational modification. [review]
These results suggest that Metnase (show SETMAR Proteins) enhances Exo1-mediated exonuclease activity on the lagging strand DNA by facilitating Exo1 loading onto a single strand gap at the stalled replication fork.
we present evidence that the inherited EXO1 polymorphism rs9350 may have a substantial influence on prostate cancer risk in Chinese people. We believe that the rs9350 could be a useful biomarker for assessing predisposition for and early diagnosis of prostate cancer.
study concludes that Exo1 gene polymorphism Lys589Glu may be associated with an increased risk of colorectal cancer in the Polish population
Mutations within the EXO1 gene are not associated with premature ovarian failure in Han Chinese women.
EXO1 is more active on DNA at temperatures below 37 degrees C and this manifests as an increase in nuclease (show DCLRE1C Proteins) activity.EXO1 preferentially cleaves one nucleotide inwards in a double stranded region of forked and nicked DNA flap (show ALOX5AP Proteins) substrates.
CRL4(Wdr70) regulates H2B monoubiquitination and facilitates Exo1-dependent DNA repair resection.
MSH2 (show MSH2 Proteins), MSH6 (show MSH6 Proteins), and EXO1 genes were overexpressed in gastroesophageal cancers.
EXO1 and FEN1 cleaved the substrate at the boundary between the single-stranded 5' flap and the duplex, whereas FAN1 incised it three to four nucleotides in the double-stranded region.
The results establish a key role for EXO1 in modulating the severity of hypomorphic MRE11 (show MRE11A Proteins) complex mutations.
Exo1-mediated HR is dispensable for stem cell function in quiescent HSC (show FUT1 Proteins), whereas it is essential to HSC (show FUT1 Proteins) response to DNA damage processing after cell cycle entry, and its loss is not compensated by intact NHEJ
In contrast to Exo1(null/null) mice, Exo1(E109K/E109K) knockin mice retain mismatch repair activity and display normal class switch recombination and meiosis.
RNAi-mediated EXO1 knockdown in mouse fibroblasts directly results in an alkylation-tolerant phenotype.
Exo1 contributes to the metabolism of DNA ends during DNA double-strand breaks repair in B lymphocytes.
Study documents the combinatorial action of Apollo (show DCLRE1B Proteins), POT1b, CST (show CORT Proteins), and the 5' exonuclease Exo1 in postreplicative telomere end processing in mouse cells, clarifying the mechanism by which the telomeric 3' overhang is generated and modulated.
EXO1 can convert DNA nicks and point mutations into double-stranded DNA breaks for both core nonhomologous end-joining factors and alternative end-joining pathways of class-switch recombination.
Apc (show APC Proteins)(1638N) Exo1 Fen1 (show FEN1 Proteins) mice survive longer (18 months)
EXO1 contributes to DNA damage signal induction in mammalian cells, and deletion of Exo1 can prolong survival in the context of telomere dysfunction.
Switch Junction Position Is Altered in Exo1-/- Mi
This gene encodes a protein with 5' to 3' exonuclease activity as well as an RNase H activity. It is similar to the Saccharomyces cerevisiae protein Exo1 which interacts with Msh2 and which is involved in mismatch repair and recombination. Alternative splicing of this gene results in three transcript variants encoding two different isoforms.
, exonuclease I Exo1
, RNA exonuclease
, exonuclease 1
, rad2 nuclease family member, homolog of S. cerevisiae exonuclease 1
, exonuclease I
, exonuclease ExoI