Two hypervariable minisatellite DNA binding proteins
- PMID: 2062643
- PMCID: PMC328321
- DOI: 10.1093/nar/19.12.3269
Two hypervariable minisatellite DNA binding proteins
Abstract
Hypervariable minisatellite DNA sequences are short, tandemly repeated sequences present at numerous loci in eukaryotes. They stimulate intermolecular homologous recombination up to 13-fold in human cells in culture and may be specific sites for the initiation of recombination in the eukaryotic genome (Wahls, W.P., Wallace, L.J., & Moore, P.D. (1990) Cell 60, 95-103). Reported here is the detection and partial purification of two hypervariable minisatellite DNA binding proteins, called Msbp-2 and Msbp-3, present in the nuclear extracts of human HeLa cells. The proteins elute from a gel filtration column with a native mass of 200-250 kDa and have sizes of 77 kDa and 115 kDa respectively.
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