RCSB PDB - CCS Ligand Summary Page

Chemical Component Summary
Name	CARBOXYMETHYLATED CYSTEINE
Identifiers	(2R)-2-amino-3-(carboxymethylsulfanyl)propanoic acid
Formula	C₅ H₉ N O₄ S
Molecular Weight	179.19
Type	L-PEPTIDE LINKING
Isomeric SMILES	C([C@@H](C(=O)O)N)SCC(=O)O
InChI	InChI=1S/C5H9NO4S/c6-3(5(9)10)1-11-2-4(7)8/h3H,1-2,6H2,(H,7,8)(H,9,10)/t3-/m0/s1
InChIKey	GBFLZEXEOZUWRN-VKHMYHEASA-N

Chemical Details
Formal Charge	0
Atom Count	20
Chiral Atom Count	1
Bond Count	19
Aromatic Bond Count	0

Drug Info: DrugBank

DrugBank ID	DB04339
Name	Carbocisteine
Groups	approved investigational
Description	Carbocisteine is a mucolytic that reduces the viscosity of sputum to relieve the symptoms of chronic obstructive pulmonary disorder (COPD) and bronchiectasis through easier expulsion of mucus. Carbocisteine should not be used with antitussives (cough suppressants) or medicines that dry up bronchial secretions as they are functional antagonists. Carbocisteine is produced by alkylation of cysteine with chloroacetic acid.
Synonyms	S-(carboxymethyl)-(R)-cysteine carbocisteína (R)-S-(carboxymethyl)cysteine S-carboxymethylcysteine Carbocisteine L-3-((carboxymethyl)thio)alanine S-carboxymethyl-L-cysteine Carbocisteine lysine L-carbocysteine (L)-2-Amino-3-(carboxymethylthio)propionic acid
Indication	Used to help relieve the symptoms of chronic obstructive pulmonary disorder (COPD) and bronchiectasis.
Categories	Amino Acids Amino Acids, Dicarboxylic Amino Acids, Neutral Amino Acids, Peptides, and Proteins Amino Acids, Sulfur Cough and Cold Preparations Cysteine Expectorants Sulfhydryl Compounds Sulfur Compounds
ATC-Code	R05CB03
CAS number	638-23-3

Drug Targets

Name	Target Sequence	Pharmacological Action	Actions
Glutathione S-transferase P	MPPYTVVYFPVRGRCAALRMLLADQGQSWKEEVVTVETWQEGSLKASCLY...	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