Nucleic Acids Research, 1982, Vol. 10, No. 24 7959-7964
© 1982
CHEMISTRY |
A photoinduced cleavage of DNA useful for determining T residues
1Institute of Genetics 2Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences H-6701 Szeged, P.O. Box 521, Hungary
Received October 26, 1982. Accepted November 17, 1982.
Irradiation of 5 -[32P]-phosphate labeled DNA fragments with ultraviolet light in the presence of primary amines followed by piperidine treatment resulted in base-specific cleavage of the DNA chain at T residues, accompanied by a less intensive G reaction. This simple, T>G cleavage offers an alternative method for determining T residues in chemical DNA sequencing
*Present adderss: MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH ENGLAND