| gptkbp:instanceOf | gptkb:amino_acid_transporter 
 | 
                        
                            
                                | gptkbp:abbreviation | gptkb:Met 
 | 
                        
                            
                                | gptkbp:associatedWith | gptkb:homocystinuria hyperhomocysteinemia
 
 | 
                        
                            
                                | gptkbp:biosynthesisInHumans | not synthesized 
 | 
                        
                            
                                | gptkbp:CASNumber | 63-68-3 
 | 
                        
                            
                                | gptkbp:category | proteinogenic amino acid essential amino acid
 sulfur-containing amino acid
 
 | 
                        
                            
                                | gptkbp:chemicalFormula | C5H11NO2S 
 | 
                        
                            
                                | gptkbp:chirality | L-form in proteins 
 | 
                        
                            
                                | gptkbp:codons | AUG 
 | 
                        
                            
                                | gptkbp:degradationProduct | sulfur dioxide cysteine
 homocysteine
 
 | 
                        
                            
                                | gptkbp:dietarySources | gptkb:fish gptkb:meat
 gptkb:milk
 seeds
 eggs
 nuts
 soybeans
 
 | 
                        
                            
                                | gptkbp:discoveredBy | John Howard Mueller 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1922 
 | 
                        
                            
                                | gptkbp:essentialAminoAcid | true 
 | 
                        
                            
                                | gptkbp:foundIn | proteins 
 | 
                        
                            
                                | gptkbp:hasInChIKey | FFEARJCKVFRZRR-UHFFFAOYSA-N 
 | 
                        
                            
                                | gptkbp:IUPACName | 2-amino-4-(methylthio)butanoic acid 
 | 
                        
                            
                                | gptkbp:KEGGID | C00073 
 | 
                        
                            
                                | gptkbp:meltingPoint | 281 °C 
 | 
                        
                            
                                | gptkbp:molecularWeight | 149.21 g/mol 
 | 
                        
                            
                                | gptkbp:oneLetterCode | M 
 | 
                        
                            
                                | gptkbp:predecessor | gptkb:S-adenosylmethionine glutathione
 taurine
 cysteine
 sulfur-containing compounds
 
 | 
                        
                            
                                | gptkbp:PubChem_CID | gptkb:CHEBI:16811 6137
 
 | 
                        
                            
                                | gptkbp:relatedTo | gptkb:S-adenosylmethionine glutathione
 taurine
 cysteine
 homocysteine
 
 | 
                        
                            
                                | gptkbp:roleInBiology | methyl group donor protein synthesis initiation
 
 | 
                        
                            
                                | gptkbp:sideChain | gptkb:thioether 
 | 
                        
                            
                                | gptkbp:solubility | soluble 
 | 
                        
                            
                                | gptkbp:UNII | AE28F7PNPL 
 | 
                        
                            
                                | gptkbp:usedIn | pharmaceuticals cell culture media
 animal feed supplements
 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:NP_006243.2 gptkb:Essential_Amino_Acid
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 8 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Methionine 
 |