BRCA1 ubiquitylation of CtIP: Just the tIP of the iceberg?
Ubiquitylation is an important regulatory mechanism of many cellular processes. The breast and ovarian cancer-specific tumour suppressor BRCA1 is well acknowledged to be a RING/E3 ubiquitin ligase, however, identification of its physiological substrates has proved elusive. Recently published data have shown that the BRCA1-interacting protein CtIP is in fact ubiquitylated by BRCA1, and opens new avenues for the isolation of other substrate proteins.
Barber
Louise J
LJ
DNA Damage Response Laboratory, Cancer Research UK, The London Research Institute, Clare Hall Laboratories, South Mimms EN6 3LD, UK.
Boulton
Simon J
SJ
D000818:Animals; D019313:BRCA1 Protein / Q000378:metabolism*; D002352:Carrier Proteins / Q000378:metabolism*; D002453:Cell Cycle; D004260:DNA Repair; D009687:Nuclear Proteins / Q000378:metabolism*; D025801:Ubiquitin / Q000378:metabolism*; D044767:Ubiquitin-Protein Ligases / Q000378:metabolism
D019313:BRCA1 Protein; D002352:Carrier Proteins; D009687:Nuclear Proteins; D025801:Ubiquitin; D044767:Ubiquitin-Protein Ligases