Nucleic Acids Research, 1992, Vol. 20, No. 9 2293-2296
© 1992
MOLECULAR BIOLOGY |
Swal, a unique restriction endonuclease from Staphylococcus warneri, which recognizes 5'-ATTTAAAT-3'
Boehringer Mannheim GmbH, Biochemical Research Center Nonnenwald 2, D-8122 Penzberg, Germany 1Department of Molecular and Cell Biology and Lawrence Berkeley Laboratories, Division of Chemical Biodynamics, University of California Berkeley, CA 94720, USA
*To whom correspondence should be addressed
Received January 31, 1992. Revised April 6, 1992. Accepted April 6, 1992.
A novel class-II restriction endonuclease designated Swal was purified from Staphylococcus warneri. This enzyme cleaves adenovirus 2 DNA, SV40 DNA and M13mp7 at one site each, but does not cleave lambda, PhiX174, pBR322 or pBR328 DNA. Swal recognizes the octanucleotide sequence 5'-ATTTAAAT-3', cleaving in the center of the recognition sequence creating blunt ended DNA fragments. Swal was used to digest chromosomal DNA from various microorganisms and human cells.
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