TaqI
Encyclopedia
TaqI is a restriction enzyme
Restriction enzyme
A Restriction Enzyme is an enzyme that cuts double-stranded DNA at specific recognition nucleotide sequences known as restriction sites. Such enzymes, found in bacteria and archaea, are thought to have evolved to provide a defense mechanism against invading viruses...

 isolated from the bacterium Thermus aquaticus
Thermus aquaticus
Thermus aquaticus is a species of bacterium that can tolerate high temperatures, one of several thermophilic bacteria that belong to the Deinococcus-Thermus group...

in 1978. It has a recognition sequence
Recognition sequence
The recognition sequence, sometimes also referred to as recognition site, of any DNA-binding protein motif that exhibits binding specificity, refers to the DNA sequence , to which the domain is specific...

of

5'TCGA
3'AGCT

and makes the cut

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