Improved method for screening cDNA expression libraries for DNA-binding proteins

Harline, M.C.; Kandala, J.C.; Sage, R.D.; Guntaka, R.V.; DeAngelo, A.

Biotechniques 13(3): 388-391

1992


ISSN/ISBN: 0736-6205
PMID: 1389172
Document Number: 402673
The ability to successfully screen a lambda gt11 cDNA expression library for specific gene products that can bind to selected sequences of DNA depends on radioactive double-stranded DNA probes with high specific activity. We demonstrate here that probes labeled by the PCR are superior to probes made by the Klenow reaction. The use of these PCR-generated probes have facilitated our efforts to isolate recombinant phage containing putative DNA-binding gene products that recognized a 246-base pair transcriptional enhancer region of Rous sarcoma virus long terminal repeat.

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