Chromatin Immunoprecipitation (ChIP) using MRE11 polyclonal antibody (Cat # PAB10277). A yeast strain containing the HO endonuclease gene controlled by a galactose-inducible promoter (uninduced 0 m lanes) was shifted into galactose containing medium (induced 60 m lanes). After 1 hour of induction cells were cross-linked with formaldehyde followed by preparation of sheared chromatin. Chromatin was immunoprecipitated with the antibody at the stated dilutions. Immunocomplexes were captured using polyacrylamide bead linked secondary antibodies. The resultant immunoprecipitate was probed by multiplex PCR, using primers 20 bp from the MAT locus double strand break (lower arrow) and 67 kb from the break (upper band, control locus). Personal Communication. Michael Lichten, NIH, CCR, Bethesda, MD.
Subunit of a complex with Rad50p and Xrs2p (RMX complex) that functions in repair of DNA double-strand breaks and in telomere stability, exhibits nuclease activity that appears to be required for RMX function; widely conserved