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TaqI is a restriction enzyme isolated from the bacterium Thermus aquaticus in 1978.[1] It has a recognition sequence of 

5'TCGA
3'AGCT

and makes the cut 

5'---T   CGA---3'
3'---AGC   T---5'

References

  1. ^ Sato, S. (February 1978). "A single cleavage of Simian virus 40 (SV40) DNA by a site specific endonuclease from Thermus aquaticus, Taq I". J. Biochem. 83 (2): 633–5. doi:10.1093/oxfordjournals.jbchem.a131952. PMID 204628.
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