Methionine (symbol Met or M) (/mɪˈθaɪəniːn/) is an essential amino acid in humans. As the precursor of other non-essential amino acids such as cysteine...

S-Adenosyl methionine (SAM), also known under the commercial names of SAMe, SAM-e, or AdoMet, is a common cosubstrate involved in methyl group transfers...

Oxidation of the sulfur of methionine results in methionine sulfoxide or methionine sulfone. The sulfur-containing amino acids methionine and cysteine are more...

Methionine synthase (MS, MeSe, MTR) is responsible for the regeneration of methionine from homocysteine. In humans it is encoded by the MTR gene...

S-Methylmethionine (SMM) is a derivative of methionine with the chemical formula (CH3)2S+CH2CH2CH(NH3+)CO2−. This cation is a naturally-occurring intermediate...

N-Formylmethionine (fMet, HCO-Met, For-Met) is a derivative of the amino acid methionine in which a formyl group has been added to the amino group. It is specifically...

Methionine sulfoximine (MSO, also known as MetSox) is an irreversible glutamine synthetase inhibitor. It is the sulfoximine derivative of methionine with...

The enzyme methionine γ-lyase (EC 4.4.1.11, MGL) is in the γ-family of PLP-dependent enzymes. It degrades sulfur-containing amino acids to α-keto acids...

The enzyme methionine decarboxylase (EC 4.1.1.57) catalyzes the chemical reaction L-methionine ⇌{\displaystyle \rightleftharpoons } 3-methylthiopropyl...

biosynthesized from methionine by the removal of its terminal Cε methyl group. In the body, homocysteine can be recycled into methionine or converted into...