L-polyhomomethionine (CH2)n.C5H11NO2S 0.0 0.0 A class of sulfur-containing amino acids consisting of homologues of methionine where there is a minimum of four methylene groups between the alpha-carbon and sulfur atoms. CHEBI:136997 L-polyhomomethionines MetaCyc:N-homo-methionine chebi_ontology methionine homolog methionine homologs methionine homologue methionine homologues sulfur-containing amino acid non-proteinogenic L-alpha-amino acid methyl sulfide