Frontiers Pathological role of methionine in the initiation and progression of biliary atresia Overview of Methionine Cycle and Folate Metabolism Creative Proteomics Methionine metabolism in health and cancer: a nexus of diet and precision medicine Nature Reviews Cancer protein synthesis protein intake. you can eat a pound of steak and only ~32% of those amino acids actually become new protein in your body. the rest gets converted to glucose