GONUTS is under stress! The website is currently experiencing long-wait times and frequent time-outs due to the record number of students, groups, and annotations related to CACAO this semester. We are currently working on increasing performance -- please accept our apologies for the technical difficulties.
You can help reduce stress on the server by:
- not reloading pages frequently - this just adds
- opening links in new windows (so you can read the old page)
PMID:14688284
From GONUTS
Sharma, S, Sommers, JA, Wu, L, Bohr, VA, Hickson, ID and Brosh, RM (2004) Stimulation of flap endonuclease-1 by the Bloom's syndrome protein.J. Biol. Chem. 279:9847-56
| Abstract | Bloom's syndrome (BS) is a rare autosomal recessive genetic disorder associated with genomic instability and an elevated risk of cancer. Cellular features of BS include an accumulation of abnormal replication intermediates and increased sister chromatid exchange. Although it has been suggested that the underlying defect responsible for hyper-recombination in BS cells is a temporal delay in the maturation of DNA replication intermediates, the precise role of the BS gene product, BLM, in DNA metabolism remains elusive. We report here a novel interaction of the BLM protein with the human 5'-flap endonuclease/5'-3' exonuclease (FEN-1), a genome stability factor involved in Okazaki fragment processing and DNA repair. BLM protein stimulates both the endonucleolytic and exonucleolytic cleavage activity of FEN-1 and this functional interaction is independent of BLM catalytic activity. BLM and FEN-1 are associated with each other in human nuclei as shown by their reciprocal co-immunoprecipitation from HeLa nuclear extracts. The BLM-FEN-1 physical interaction is mediated through a region of the BLM C-terminal domain that shares homology with the FEN-1 interaction domain of the Werner syndrome protein, a RecQ helicase family member homologous to BLM. This study provides the first evidence for a direct interaction of BLM with a human nucleolytic enzyme. We suggest that functional interactions between RecQ helicases and Rad2 family nucleases serve to process DNA substrates that are intermediates in DNA replication and repair. |
| Links | PubMed Online version:10.1074/jbc.M309898200 |
Significance
Annotations
| Gene product | Qualifier | GO ID | GO term name | Evidence Code | with/from | Aspect | Notes | Status |
|---|---|---|---|---|---|---|---|---|
| edit table |
See also
References
See Help:References for how to manage references in GONUTS.
