<prompt> Glycine is useful in all of the following, except:Purine synthesisCreatine synthesisHeme synthesisSynthesis of spermine  <response>: CREATININE is Synthesized from 3 Amino Acids Glycine, Arginine and Methionine In Heme; Succinyl CoA Glycine produces Heme In the liver and erythroid precursor cells. C4, C5, N7 of Purine ring is contributed by Glycine, Remember glycine is not contuibute to Pyrimidine Ring. The precursor for synthesis of spermine is the amino acid ornithine. 