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Sigma-Aldrich

L-Cystine

≥98% (TLC), crystalline

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Synonym(s):
(R,R)-3,3′-Dithiobis(2-aminopropionicacid)
Linear Formula:
[-SCH2CH(NH2)CO2H]2
CAS Number:
56-89-3
Molecular Weight:
240.30
Beilstein:
1728094
EC Number:
200-296-3
MDL number:
MFCD00064228
eCl@ss:
32160406
PubChem Substance ID:
24893101
NACRES:
NA.26

Quality Level

200

Assay

≥98% (TLC)

form

crystalline

color

white to off-white

mp

>240 °C (dec.) (lit.)

solubility

1 M HCl: 50 mg/mL, clear, colorless to faintly yellow

application(s)

cell analysis
peptide synthesis

storage temp.

room temp

SMILES string

N[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O

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 key

LEVWYRKDKASIDU-IMJSIDKUSA-N

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Application

L-Cystine has been used in in vitro cystine solubility assay to identify potential drugs that influence cystine solubility. It is also used as a supplement of phosphate-buffered saline to slice and wash periprosthetic tissues.

Biochem/physiol Actions

Cysteine is the source of disulfide linkages in proteins and has a role in sulfur transport. It undergoes rapid oxidation to form cystine at physiological pH. L-cystine is crucial for oxygen production and low density lipoprotein modification by arterial smooth muscle cells. It also has a role in the synthesis of glutathione.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Mass Spectrometry-based in vitro Assay to Identify Drugs that Influence Cystine Solubility
Neelanjan Bose
Bio-protocol, 7(14), e2417-e2417 (2017)
The role of sulfur-containing amino acids in superoxide production and modification of low density lipoprotein by arterial smooth muscle cells.
Heinecke JW
The Journal of Biological Chemistry, 262(21), 10098-10103 (1987)
The x(c)- cystine/glutamate antiporter: a potential target for therapy of cancer and other diseases
Maisie Lo
Journal of Cellular Physiology, 215(215) (2008)
Wear particles and ions from cemented and uncemented titanium-based hip prostheses?A histological and chemical analysis of retrieval material
Susann Grosse
Journal of Biomedical Materials Research, 709?717-709?717 (2015)
Philip J Hogg
Nature reviews. Cancer, 13(6), 425-431 (2013-05-11)
Protein action in nature is generally controlled by the amount of protein produced and by chemical modification of the protein, and both are often perturbed in cancer. The amino acid side chains and the peptide and disulphide bonds that bind
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