Record Information
Version1.0
Creation Date2016-09-30 22:26:32 UTC
Update Date2020-06-04 21:10:52 UTC
BMDB IDBMDB0000192
Secondary Accession Numbers
  • BMDB00192
Metabolite Identification
Common NameL-Cystine
DescriptionCystine, also known as L-dicysteine or E921, belongs to the class of organic compounds known as l-cysteine-s-conjugates. L-cysteine-S-conjugates are compounds containing L-cysteine where the thio-group is conjugated. Cystine exists as a solid, possibly soluble (in water), and a very strong basic compound (based on its pKa) molecule. Cystine exists in all living species, ranging from bacteria to humans. Cystine has been found to be associated with several diseases known as molybdenum cofactor deficiency, schizophrenia, parkinson's disease, and colorectal cancer; also cystine has been linked to the inborn metabolic disorders including fumarase deficiency.
Structure
Thumb
Synonyms
ValueSource
(R,R)-3,3'-Dithiobis(2-aminopropanoic acid)ChEBI
(R-(R*,r*))-3,3'-dithiobis(2-aminopropanoic acid)ChEBI
3,3'-Dithiobis-L-alanineChEBI
beta,Beta'-diamino-beta,beta'-dicarboxydiethyl disulfideChEBI
beta,Beta'-dithiodialanineChEBI
Bis(beta-amino-beta-carboxyethyl) disulfideChEBI
e921ChEBI
L-alpha-Diamino-beta-dithiolactic acidChEBI
L-DicysteineChEBI
Oxidized L-cysteineChEBI
(R,R)-3,3'-Dithiobis(2-aminopropanoate)Generator
(R-(R*,r*))-3,3'-dithiobis(2-aminopropanoate)Generator
b,Beta'-diamino-b,beta'-dicarboxydiethyl disulfideGenerator
b,Beta'-diamino-b,beta'-dicarboxydiethyl disulphideGenerator
beta,Beta'-diamino-beta,beta'-dicarboxydiethyl disulphideGenerator
Β,beta'-diamino-β,beta'-dicarboxydiethyl disulfideGenerator
Β,beta'-diamino-β,beta'-dicarboxydiethyl disulphideGenerator
b,Beta'-dithiodialanineGenerator
Β,beta'-dithiodialanineGenerator
Bis(b-amino-b-carboxyethyl) disulfideGenerator
Bis(b-amino-b-carboxyethyl) disulphideGenerator
Bis(beta-amino-beta-carboxyethyl) disulphideGenerator
Bis(β-amino-β-carboxyethyl) disulfideGenerator
Bis(β-amino-β-carboxyethyl) disulphideGenerator
L-a-Diamino-b-dithiolactateGenerator
L-a-Diamino-b-dithiolactic acidGenerator
L-alpha-Diamino-beta-dithiolactateGenerator
L-Α-diamino-β-dithiolactateGenerator
L-Α-diamino-β-dithiolactic acidGenerator
(-)-CystineHMDB
(R-(R*,r*))-3,3'-dithiobisHMDB
2-Amino-3-(2-amino-2-carboxy-ethyl)disulfanyl-propanoateHMDB
2-Amino-3-(2-amino-2-carboxy-ethyl)disulfanyl-propanoic acidHMDB
2-Amino-3-[(2-amino-2-carboxyethyl)dithio]propanoateHMDB
2-Amino-3-[(2-amino-2-carboxyethyl)dithio]propanoic acidHMDB
3,3'-DithiobisHMDB
3,3'-Dithiobis[2-amino-[R-(r*,r*)]-propanoateHMDB
3,3'-Dithiobis[2-amino-[R-(r*,r*)]-propanoic acidHMDB
3,3'-DithiodialanineHMDB
b,B'-diamino-b,b'-dicarboxydiethyl disulfideHMDB
b,B'-dithiodialanineHMDB
beta,Beta'-dithiobisalanineHMDB
Bis(b-amino-beta-carboxyethyl) disulfideHMDB
Cysteine disulfideHMDB
CystinHMDB
CystineHMDB
Cystine acidHMDB
D(+)-3,3'-Dithiobis(2-aminopropanoateHMDB
D(+)-3,3'-Dithiobis(2-aminopropanoic acidHMDB
DicysteineHMDB
GelucystineHMDB
L-(-)-CystineHMDB
L-Cysteine disulfideHMDB
L-CystinHMDB
[R-(R*,r*)]-3,3'-dithiobisHMDB
L CystineHMDB
Copper cystinateHMDB
L-CystineKEGG
Chemical FormulaC6H12N2O4S2
Average Molecular Weight240.3
Monoisotopic Molecular Weight240.023848262
IUPAC Name(2R)-2-amino-3-{[(2R)-2-amino-2-carboxyethyl]disulfanyl}propanoic acid
Traditional NameL-cystine
CAS Registry Number56-89-3
SMILES
N[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O
InChI Identifier
InChI=1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1
InChI KeyLEVWYRKDKASIDU-IMJSIDKUSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as l-cysteine-s-conjugates. L-cysteine-S-conjugates are compounds containing L-cysteine where the thio-group is conjugated.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentL-cysteine-S-conjugates
Alternative Parents
Substituents
  • L-cysteine-s-conjugate
  • Alpha-amino acid
  • L-alpha-amino acid
  • Dicarboxylic acid or derivatives
  • Organic disulfide
  • Dialkyldisulfide
  • Amino acid
  • Sulfenyl compound
  • Carboxylic acid
  • Organopnictogen compound
  • Organic nitrogen compound
  • Primary amine
  • Organosulfur compound
  • Organooxygen compound
  • Organonitrogen compound
  • Primary aliphatic amine
  • Organic oxygen compound
  • Carbonyl group
  • Hydrocarbon derivative
  • Amine
  • Organic oxide
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
StatusDetected and Quantified
Origin
  • Endogenous
BiofunctionNot Available
ApplicationNot Available
Cellular locations
  • Cytoplasm
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point260.5 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility0.19 mg/mLNot Available
LogP-5.08CHMELIK,J ET AL. (1991)
Predicted Properties
PropertyValueSource
logP-3.2ALOGPS
logP-5.9ChemAxon
logS-1.2ALOGPS
pKa (Strongest Acidic)1.56ChemAxon
pKa (Strongest Basic)9.34ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area126.64 ŲChemAxon
Rotatable Bond Count7ChemAxon
Refractivity54.87 m³·mol⁻¹ChemAxon
Polarizability22.77 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (4 TMS)splash10-00kb-0950000000-a803bc05843192dd737dView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-00kb-0940000000-f82b905ef9e7c9e47552View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (4 TMS)splash10-00di-9850000000-49b9a52a8387d6d6f272View in MoNA
GC-MSGC-MS Spectrum - GC-MS (4 TMS)splash10-014j-1970000000-9576699202733d4fd7edView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00kb-0950000000-a803bc05843192dd737dView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00di-9850000000-49b9a52a8387d6d6f272View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-014j-1970000000-9576699202733d4fd7edView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00kb-0930000000-7cb336c3f272fd0fcd6bView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00kb-0920000000-1c414573da4bbe4a66ddView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0076-9400000000-211575093fd775db5d54View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positivesplash10-0076-9112000000-ee49e3b674a4f8bb9ecdView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_1_1) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_1_2) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_2_2) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_2_3) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_2_4) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_2_5) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_1_1) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_1_2) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_2_1) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_2_2) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_2_3) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_2_4) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_2_5) - 70eV, PositiveNot AvailableView in JSpectraViewer
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-0006-0890000000-51a32ee40240e45646bcView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-00di-9700000000-4054924ddfb90f120e67View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-00di-9100000000-085d45702e61de0f8e4dView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QFT , negativesplash10-00di-9710000000-9321541af2ad89bd0478View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 1V, negativesplash10-000i-0090000000-041bfa55cb183f42f454View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 1V, negativesplash10-000i-0190000000-3611e8b6715129842130View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 2V, negativesplash10-000i-0190000000-dbafdd64edad14af9281View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 2V, negativesplash10-000i-0290000000-6b80d283287249ba4b87View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 3V, negativesplash10-000i-0390000000-c091ce388dfcbd339e3fView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 3V, negativesplash10-0079-0690000000-c808ac294a0bc182c5ebView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 4V, negativesplash10-0079-0970000000-36297b29c4ef45c658e3View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 4V, negativesplash10-00dr-0940000000-a8c735a0f9082cfd7c7cView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 5V, negativesplash10-00di-1920000000-9d55705325536cca5eb2View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 5V, negativesplash10-00di-1910000000-cd18de2585913152e907View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 6V, negativesplash10-00di-1900000000-3118609f8682bee472c6View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 7V, negativesplash10-00di-2900000000-213ccc3c067486ff9444View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 8V, negativesplash10-00di-3900000000-df68db23afd937a9a75dView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 9V, negativesplash10-00di-4900000000-b46d26f57a194d2ff648View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Orbitrap 10V, negativesplash10-00di-6900000000-5535cccb24de733cada3View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-006w-2970000000-b80e0aef184b74ce7a36View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00re-4910000000-a09277c5a6bfc432eb79View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00xu-9600000000-0518bfcaab380952c123View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-3590000000-aa667d3c092c5af3ae7fView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00xr-5910000000-122bd251359ca80b184cView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-00dr-9300000000-bbb14e684ff7c06e7916View in MoNA
MSMass Spectrum (Electron Ionization)splash10-000x-9000000000-ae0f516d71e6a49fe52fView in MoNA
1D NMR1H NMR Spectrum (1D, 600 MHz, H2O, experimental)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 25.16 MHz, D2O, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, D2O, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, D2O, experimental)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, D2O, experimental)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, D2O, experimental)Not AvailableView in JSpectraViewer
2D NMR[1H, 1H]-TOCSY. Unexported temporarily by An Chi on Oct 15, 2021 until json or nmrML file is generated. 2D NMR Spectrum (experimental)Not AvailableView in JSpectraViewer
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Not AvailableView in JSpectraViewer
Biological Properties
Cellular Locations
  • Cytoplasm
Biospecimen Locations
  • All Tissues
  • Liver
  • Mammary Gland
  • Milk
  • Placenta
  • Semen
  • Testis
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
All TissuesExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
LiverDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
LiverDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
LiverDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
Mammary GlandDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
Mammary GlandDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
MilkDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified1123.596 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified1123.596 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified1123.596 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified1123.596 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified1081.981 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified1081.981 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified1081.981 uMNot SpecifiedNot Specified
Normal
details
PlacentaExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
SemenDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
TestisDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
Abnormal Concentrations
Not Available
HMDB IDHMDB0000192
DrugBank IDDB00138
Phenol Explorer Compound IDNot Available
FooDB IDFDB012672
KNApSAcK IDC00001352
Chemspider ID60997
KEGG Compound IDC00491
BioCyc IDNot Available
BiGG ID35134
Wikipedia LinkCystine
METLIN ID5207
PubChem Compound67678
PDB IDNot Available
ChEBI ID16283
References
Synthesis ReferenceGrossi, Loris; Montevecchi, Pier Carlo. S-Nitrosocysteine and Cystine from Reaction of Cysteine with Nitrous Acid. A Kinetic Investigation. Journal of Organic Chemistry (2002), 67(24), 8625-8630.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Melzer N, Wittenburg D, Hartwig S, Jakubowski S, Kesting U, Willmitzer L, Lisec J, Reinsch N, Repsilber D: Investigating associations between milk metabolite profiles and milk traits of Holstein cows. J Dairy Sci. 2013 Mar;96(3):1521-34. doi: 10.3168/jds.2012-5743. [PubMed:23438684 ]
  2. Mung D, Li L: Development of Chemical Isotope Labeling LC-MS for Milk Metabolomics: Comprehensive and Quantitative Profiling of the Amine/Phenol Submetabolome. Anal Chem. 2017 Apr 18;89(8):4435-4443. doi: 10.1021/acs.analchem.6b03737. Epub 2017 Mar 28. [PubMed:28306241 ]
  3. Mung D, Li L: Applying quantitative metabolomics based on chemical isotope labeling LC-MS for detecting potential milk adulterant in human milk. Anal Chim Acta. 2018 Feb 25;1001:78-85. doi: 10.1016/j.aca.2017.11.019. Epub 2017 Nov 14. [PubMed:29291809 ]
  4. Fooddata+, The Technical University of Denmark (DTU) [Link]