Acetyl phosphate has been found to replace carbamyl phosphate as substrate for brain carbamyl phosphatase (1) ; for ornithine transcarbamylase from rat liver, frog liver, and bacteria (2, 3); for production of adenosine triphosphate with carbamyl phosphate synthetase from frog liver (3, 4); and for carbamyl phosphokinase from strain Die group D streptococci and Escherichia coli (3, 5). The rati...
