Abstract
Rat genome was assayed for the presence of hsp70 gene-related sequences. Southern blots prepared from rat DNA digested with EcoRI or HindIII restriction endonucleases were hybridized with mouse, human and fruit fly hsp 70 gene probes at increasing stringencies. At the stringency which allows sequences divergent up to about 30% to form stable complexes all three probes detected 25–30 restriction fragments. Increased stringency of the hybridization reduced the number of detectable bands to a few and among them the DNA fragments hybridizing specifically either with mouse or human hsp70 gene probes were detected. Most of the genomic fragments containing hsp70 gene-related sequences were subsequently isolated by screening the rat genomic library with mouse hsp70 gene probe. 168 positive clones were plaque purified and on the basis of the restriction and hybridization pattern we deduced that inserts represented 20 different genomic regions. Partial restriction maps of all isolated genomic fragments were constructed and regions containing hsp70 gene related as well as highly repetitive DNA sequences were localized. A putative sequence rearrangement in the proximity of the hsp70 gene-related sequence was detected in one of the isolated genomic segments.
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Wiśniewski, J., Krawczyk, Z. Isolation of major heat shock protein (hsp70) gene-related sequences from rat genome. Mol Biol Rep 13, 21–28 (1988). https://doi.org/10.1007/BF00805635
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DOI: https://doi.org/10.1007/BF00805635