AbeI, a restriction endonuclease from Azotobacter beijerinckii, which recognizes the asymmetric heptanucleotide sequence 5'-CCTCAGC-3'(-5/-2).

Abstract

A new restriction endonuclease Abe I has beenisolated from Azotobacter beijerinckii. This enzymerecognizes the asymmetric heptanucleotide sequence 5'-CCTCAGC-3' and cleaves within it symmetrically at positions -5/-2 in the opposing strands, producing three base protruding 5'-ends.

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