https://www.maximizemarketresearch.com/market-report/methionine-market/1859/

Methionine (MET) is involved in cellular metabolism at several levels, including as a protein component, in the commencement of mRNA translation, and as a control molecule in the form of S-adenosylmethionine (SAM). As a result, MET production, storage, and intake may be expected to be strictly regulated.