The formation of acetoacetate in homogenates of the mammary gland.

H. A. KREBS, P. K. JENSEN AND L. V. EGGLESTON I958 3. Adenosine 5'-phosphate, L-aspartate, L-asparagine, fumarate and glycerol each stimulated 'factor' activity but had no effect on the enzymic hydrolysis ofcarbamyl phosphate. This stimulation generally increased with time. 4. Some characteristics ofthe bacterial hydrolysis of carbamyl phosphate are described. 5. The results indicate that the bacterial 'factor' is not a carbamylphosphatase.