organic sulfide sulfur-containing amino acid L-homolanthionine (2S,2'S)-4,4'-sulfanediylbis(2-aminobutanoic acid) (S,S)-2,2'-diamino-4,4'-sulfanediyldibutyric acid 236.083 236.28900 A sulfur-containing amino acid in which the gamma-carbon atoms of two molecules of L-aminobutyric acid are joined via a thioether linkage. It is a byproduct of cystathionine-gamma-lyase and a possible human hyperhomocysteinemia marker. C8H16N2O4S CAS:31982-10-2 CHEBI:62856 HMDB:HMDB0002034 InChI=1S/C8H16N2O4S/c9-5(7(11)12)1-3-15-4-2-6(10)8(13)14/h5-6H,1-4,9-10H2,(H,11,12)(H,13,14)/t5-,6-/m0/s1 L-Homolanthionin MBEPFGPQVBIIES-WDSKDSINSA-N N[C@@H](CCSCC[C@H](N)C(O)=O)C(O)=O PMID:1101592 PMID:16385051 PMID:5938411 Reaxys:1728128 S-[(3S)-3-amino-3-carboxypropyl]-L-homocysteine chebi_ontology homolanthionine non-proteinogenic L-alpha-amino acid