a photolabile reagent , p-azidophenacyl-dl-thiocarnitine , was synthesized and tested as a photoaffinity label for carnitine acetyltransferase ( ec 2.3.1.7 ) from pigeon breast . p-azidophenacyl-dl-thiocarnitine is an active-site-directed reagent for this acetyltransferase , since it is a competitive inhibitor ( ki 10 microm ) versus carnitine .
C0007259
carnitine acetyltransferase
C0001068
acetyltransferase