A Guanosine Triphosphate-dependent Acyl Coenzyme A Synthetase from Rat Liver Mitochondria
Lauro Galzigna 1, Carlo R. Rossi 1, Lodovico Sartorelli 1, and David M. Gibson 1
From the
1 From the Department of Biochemistry, Indiana University School of Medicine, Indianapolis, Indiana 46207, and the Institutes of Biological and Organic Chemistry, University of Padua, Padua, Italy
A guanosine triphosphate-specific acyl coenzyme A synthetase has been purified from extracts of sonically disrupted rat liver mitochondria. This enzyme, which is free of adenosine triphosphate-dependent activating systems and from succinyl-CoA synthetase activity, catalyzes the formation of CoA esters of both long and short chain fatty acids. GTP-specific fatty acid activation is inhibited by orthophosphate and fluoride.
Submitted on December 2, 1966