Creatine phosphate, biosynthesis

Creatinine is formed in muscle from creatine phosphate by irreversible, nonenzymatic dehydration and loss of phosphate (Figure 31-6). The 24-hour urinary excretion of creatinine is proportionate to muscle mass. Glycine, arginine, and methionine all participate in creatine biosynthesis. Synthesis of creatine is completed by methylation of guanidoacetate by S-adenosylmethio-nine (Figure 31-6). 

Figure 21.3 Biosynthesis of creatine phosphate and nitric oxide from... 

Biosynthesis of Ornithine, Arginine, and Creatine Phosphate (Figure 2L2,... 

Biosynthesis of ATP. ATP is the irrunediate product of all cellular processes leading to the chemical storage of energy. It is biosynthesized by phosphorylation of ADP in the course of Substrate phosphorylation (see). Oxidative phosphorylation (see) and non-cyclic Photophosphorylation (see) in plants. Energy in the form of a third phosphate may also be transferred to ADP from other high-energy phosphates, such as creatine phosphate (see Creatine) or other nucleoside triphosphates, or in the adenylate kinase reaction. 

Figure 20.24 Biosynthesis of creatine, creatinine phosphate, and creatine from arginine.

Biosynthesis of phosphocreatine (creatine 5-phosphate) and phosphoarginine (arginine phosphate)... 

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