CYS

CYSTEINE

Created:	1999-07-08
Last modified:	2024-09-27

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136 entries where CYS is found as a standalone ligand12 entries where CYS is covalently linked to polymer or other heterogen groups 191,663 entries where CYS is found in a polymer sequence

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Chemical Details
Formal Charge	0
Atom Count	14
Chiral Atom Count	1
Bond Count	13
Aromatic Bond Count	0

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Chemical Component Summary
Name	CYSTEINE
Systematic Name (OpenEye OEToolkits)	(2R)-2-amino-3-sulfanyl-propanoic acid
Formula	C₃ H₇ N O₂ S
Molecular Weight	121.158
Type	L-PEPTIDE LINKING

Chemical Descriptors
Type	Program	Version	Descriptor
SMILES	ACDLabs	10.04	O=C(O)C(N)CS
SMILES	CACTVS	3.341	N[CH](CS)C(O)=O
SMILES	OpenEye OEToolkits	1.5.0	C(C(C(=O)O)N)S
Canonical SMILES	CACTVS	3.341	N[C@@H](CS)C(O)=O
Canonical SMILES	OpenEye OEToolkits	1.5.0	C([C@@H](C(=O)O)N)S
InChI	InChI	1.03	InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1
InChIKey	InChI	1.03	XUJNEKJLAYXESH-REOHCLBHSA-N

Drug Info: DrugBank

DrugBank ID	DB00151
Name	Cysteine
Groups	approved nutraceutical
Description	A thiol-containing non-essential amino acid that is oxidized to form cystine.
Synonyms	Free Cysteine (2R)-2-amino-3-sulfanylpropanoic acid Cysteinum Cysteine hydrochloride (2R)-2-amino-3-mercaptopropanoic acid Cisteinum L-Cys L-2-Amino-3-mercaptopropionic acid L-Zystein Cys L-cysteine L-Cystein Cysteine (R)-2-Amino-3-mercaptopropanoic acid Cisteina
Brand Names	8.5% Freamine III Primene 10%-liq IV Vamin N Cysteine Hydrochloride TrophAmine Premasol - sulfite-free (Amino Acid) NephrAmine Distilpure Msm L-Cysteine Hydrochloride Primene Cicatrin Powder Elcys ProcalAmine Vamin 18 Electrolyte-free FreAmine III Nouress Medi Msm (methyl Sulfonyl Methane) Hepatasol L Cysteine HCl Inj 50mg/ml Aminoderm Poudre HepatAmine Nephramine Liq IV Primene 10% FreAmine HBC Aminosyn HF
Indication	For the prevention of liver damage and kidney damage associated with overdoses of acetaminophen
Categories	Amino Acids Amino Acids, Neutral Amino Acids, Peptides, and Proteins Amino Acids, Sulfur Caloric Agents Cysteine Dietary Supplements Nutritional Support Proteinogenic Amino Acids Sulfhydryl Compounds Sulfur Compounds Supplements
CAS number	52-90-4

Drug Targets

Name	Target Sequence	Pharmacological Action	Actions
Glutamate--cysteine ligase regulatory subunit	MGTDSRAAKALLARARTLHLQTGNLLNWGRLRKKCPSTHSEELHDCIQKT...	unknown
Glutamate--cysteine ligase catalytic subunit	MGLLSQGSPLSWEETKRHADHVRRHGILQFLHIYHAVKDRHKDVLKWGDE...	unknown
Aspartate aminotransferase, cytoplasmic	MAPPSVFAEVPQAQPVLVFKLTADFREDPDPRKVNLGVGAYRTDDCHPWV...	unknown	substrate
Aspartate aminotransferase, mitochondrial	MALLHSGRVLPGIAAAFHPGLAAAASARASSWWTHVEMGPPDPILGVTEA...	unknown	substrate
Cystathionine gamma-lyase	MQEKDASSQGFLPHFQHFATQAIHVGQDPEQWTSRAVVPPISLSTTFKQG...	unknown
Cystathionine beta-synthase	MPSETPQAEVGPTGCPHRSGPHSAKGSLEKGSPEDKEAKEPLWIRPDAPS...	unknown
Cysteine--tRNA ligase, cytoplasmic	MADSSGQQGKGRRVQPQWSPPAGTQPCRLHLYNSLTRNKEVFIPQDGKKV...	unknown	substrate
Methylated-DNA--protein-cysteine methyltransferase	MDKDCEMKRTTLDSPLGKLELSGCEQGLHEIKLLGKGTSAADAVEVPAPA...	unknown
Glutathione synthetase	MATNWGSLLQDKQQLEELARQAVDRALAEGVLLRTSQEPTSSEVVSYAPF...	unknown
Probable cysteine--tRNA ligase, mitochondrial	MLRTTRGPGLGPPLLQAALGLGRAGWHWPAGRAASGGRGRAWLQPTGRET...	unknown	substrate
Cysteine sulfinic acid decarboxylase	MADSEALPSLAGDPVAVEALLRAVFGVVVDEAIQKGTSVSQKVCEWKEPE...	unknown
Cysteine desulfurase, mitochondrial	MLLRAAWRRAAVAVTAAPGPKPAAPTRGLRLRVGDRAPQSAVPADTAAAP...	unknown
Cysteine dioxygenase type 1	MEQTEVLKPRTLADLIRILHQLFAGDEVNVEEVQAIMEAYESDPTEWAMY...	unknown
Monocarboxylate transporter 10	MVLSQEEPDSARGTSEAQPLGPAPTGAAPPPGPGPSDSPEAAVEKVEVEL...	unknown	inhibitor
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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

Related Resource References

Resource Name	Reference
PubChem	6419722, 5862
ChEMBL	CHEMBL863
ChEBI	CHEBI:17561, CHEBI:35235
CCDC/CSD	CYSCLM11, EMUFID, LOCJET09, AHIMEL, EMUFEZ, BOWKOO07, LOCJET08, BOWKOO05, LOCJET01, BOWKOO06, LOCJET07, LOCJET05, BOWKOO03, LOCJET06, LOCLOF, LOCJET04, LOCJET03, BOWKOO08, HUWNUL, BOWKOO, BOWKOO01, LOCJET02, HIDGOQ, BOWKOO04, BOWKOO02, LOCLOF01, HUWNOF, LOCJET, FOZZIG, BOQCUF02, BOQCUF05, BOQCUF04, BOQCUF03, BOQCUF01, EMOJAT, BOQCUF06, BOQCUF07, BOQCUF08, BOQCUF09, BOQCUF10