RCSB PDB - HCS Ligand Summary Page

HCS

2-AMINO-4-MERCAPTO-BUTYRIC ACID

Find entries where: HCS

is present as a standalone ligand in 26 entries

as a non-polymer is covalently linked to polymer or other heterogen groups 3 entries

is present in a polymer sequence 9 entries

Chemical Component Summary
Name	2-AMINO-4-MERCAPTO-BUTYRIC ACID
Identifiers	(2S)-2-amino-4-sulfanyl-butanoic acid
Formula	C₄ H₉ N O₂ S
Molecular Weight	135.19
Type	L-PEPTIDE LINKING
Isomeric SMILES	N[C@@H](CCS)C(O)=O
InChI	InChI=1S/C4H9NO2S/c5-3(1-2-8)4(6)7/h3,8H,1-2,5H2,(H,6,7)/t3-/m0/s1
InChIKey	FFFHZYDWPBMWHY-VKHMYHEASA-N

Chemical Details
Formal Charge	0
Atom Count	17
Chiral Atom Count	1
Bond Count	16
Aromatic Bond Count	0

Drug Info: DrugBank

DrugBank ID	DB04422
Name	Homocysteine
Groups	experimental
Description	Homocysteine is a thiol-containing amino acid formed by a demethylation of methionine.
Synonyms	L-2-amino-4-mercaptobutyric acid Homocysteine L-Homocysteine
Categories	Amino Acids Amino Acids, Peptides, and Proteins Amino Acids, Sulfur Sulfur Compounds
CAS number	6027-13-0

Drug Targets

Name	Target Sequence	Pharmacological Action
5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferase	MKAYAFGFPKIGEKREFKKALEDFWKGKITEEQFEEEMNKLRMYMVENYR...	unknown
5-methyltetrahydrofolate S-homocysteine methyltransferase	MRNRREVSKLLSERVLLLDGAYGTEFMKYGYDDLPEELNIKAPDVVLKVH...	unknown
S-ribosylhomocysteine lyase	MPSVESFELDHNAVVAPYVRHCGVHKVGTDGVVNKFDIRFCQPNKQAMKP...	unknown

Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682