Abstract
The ontogenic development of glycine N-acyltransferase activity was studied in preparations of hepatic and renal mitochondria from the New Zealand White rabbit and the Sprague-Dawley rat. Preparations of hepatic mitochondria from the rat and the rabbit attain adult glycine N-acyltransferase specific activities by birth and 4 weeks of age respectively, whereas mitochondrial preparations from rabbit kidney do not attain adult activity until 4 months of age. Pretreatment of adult rats or immature rabbits with salicylic acid, benzoic acid or phenobarbital had little effect on glycine N-acyltransferase activity in vitro in liver or kidney.