Possible Interaction: Methionine and Sulfur

“Evidence is reviewed showing that the lipotropic effect of methionine may be mediated by sulfane sulfur and that the hepatosteatogenic effect of cystine may be related to the removal of sulfane sulfur by cysteine catabolites.”

“The abomasal or intravenous infusion of sulphur-containing amino acids such as cysteine or methionine into sheep on low-quality diets increases the sulphur content of the wool by increasing the synthesis of proteins containing a cysteine content of approximately 30 mol %.”

“Increasing the sulfur level with methionine and sulfate, of such a diet, enhances zinc absorption.”

“Their predicted function is to shunt all available sulfur to methionine.”

“Transcription and enzymatic activities of several key sulfur metabolism genes, ATP-sulfurylase, sulfite reductase, methionine permease , cysteine synthase, cystathionine β- and γ-lyase, glutathione reductase and glutathione peroxidase were increased under sulfur starvation conditions.”

“The presence of L-methionine resulted in a different kind of adduct formation which involves ammine release due to the trans-effect of sulfur.”

“The growth yield of an organism under conditions of sulphur limitation could therefore be greatly enhanced by mutations that substitute Met and Cys in the organism's proteins for sulphur-free amino acids.”

“Regression analysis revealed a high correlation between available methionine and sulphur (r = 0.83), between sulphur and PER (r = 0.98) in the processed lupine samples, and lupine mixtures with other protein sources.”