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. 1984 Jul 25;12(14):5567–5581. doi: 10.1093/nar/12.14.5567

A second type II restriction endonuclease from Thermus aquaticus with an unusual sequence specificity.

D Barker, M Hoff, A Oliphant, R White
PMCID: PMC320015  PMID: 6087291

Abstract

A type II restriction endonuclease activity free of TaqI was prepared from Thermus Aquaticus YT. The fraction contains two endonucleolytic components with apparently different specificities, however the major activity is sufficiently dominant to allow partial digestion analysis of the position of recognition sites. A precise determination of the location of cleavage sites in pBR322 DNA and a computer-aided search for regions of homology in the vicinity of the cut sites indicate that this enzyme recognizes the nonpalindromic sequences GACCGA or CACCCA. Other related sequences are not cleaved, in particular, GACCCA and CACCGA, indicating that the enzyme requires the identity of nucleotides in the first and fifth positions, a type of specificity that has not been previously reported. The position of cleavage is located outside of the site and is represented as: (Formula: see text).

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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