has role is conjugate acid of is tautomer of homocysteine 0 135.035 135.18580 2-Amino-4-mercaptobutyric acid 2-amino-4-sulfanylbutanoic acid A sulfur-containing amino acid consisting of a glycine core with a 2-mercaptoethyl side-chain. C4H9NO2S CHEBI:14408 CHEBI:17230 CHEBI:5751 FFFHZYDWPBMWHY-UHFFFAOYSA-N HMDB:HMDB00742 Hcy Homocysteine InChI=1S/C4H9NO2S/c5-3(1-2-8)4(6)7/h3,8H,1-2,5H2,(H,6,7) KEGG:C05330 NC(CCS)C(O)=O PMID:11133260 PMID:16596805 PMID:18370634 Wikipedia:Homocysteine chebi_ontology homocysteine homocysteines sulfur-containing amino acid homocysteine zwitterion homocysteinate fundamental metabolite