NCIt definition : Bacterial chloramphenicol-O-acetyltransferase protein (219 aa, 26 kD) is encoded by
the bacterial chloramphenicol-O-acetyltransferase (cat) gene. This enzyme detoxifies
the antibiotic chloramphenicol via acetylation to yield chloramphenicol 3-acetate.
The presence of this enzyme confers chloramphenicol resistance to bacteria, which
is used as a marker for selection in molecular techniques that utilize genetic transfection.;