233155

Cleland′s Reagent

A protective agent for SH groups. Cyclizes as it reduces disulfides to thiols, so reaction is "driven" to completion. Does not contain waxy surfactant found in many other preparations. Oxidized dithiothreitol: ≤0.5%.

• Synonyme(s) : Cleland’s Reagent, DTT, Dithiothreitol, Dithiothreitol, DTT
• Formule empirique (notation de Hill) : C₄H₁₀O₂S₂
• Numéro CAS: 3483-12-3
• Poids moléculaire : 154.25
• UNSPSC Code: 12161504
• NACRES: NA.25
• MDL number: MFCD00004877
• Assay: ≥97% (titration)
• Form: powder

Propriétés

• Quality Segment: 100
• description: Merck USA index - 14, 3376
• assay: ≥97% (titration)
• form: powder
• reaction suitability: reagent type: reductant
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze
• color: white to off-white
• solubility: water: 30 mg/mL, ethanol: soluble
• cation traces: heavy metals: ≤1 ppm, heavy metals: <1 ppm
• shipped in: ambient
• storage temp.: 2-8°C
• SMILES string: SC[C@H](O)[C@@H](O)CS
• InChI: 1S/C4H10O2S2/c5-3(1-7)4(6)2-8/h3-8H,1-2H2/t3-,4-/m0/s1
• InChI key: VHJLVAABSRFDPM-IMJSIDKUSA-N

Description

General description

A protective agent for SH groups. Cyclizes as it reduces disulfides to thiols, so reaction is "driven" to completion. Does not contain waxy surfactant found in many other preparations.

DTT is a water-soluble protective reagent for sulfhydryl groups. It maintains monothiols in the reduced state and reduces disulfides quantitatively. Most widely used for the study of disulfide exchange reactions of protein disulfides. DTT readily permeates cell membranes. Protects protein sulfhydryls and restores enzyme activity lost by the oxidation of sulfhydryl groups in vitro. As a reducing agent, it cyclizes as it reduces disulfides to thiols, so the reaction is "driven" to completion without using large excesses of reductant. If free thiols are to be assayed later, excess reductant must be removed by dialysis or some other appropriate method. Alternatively, an immobilized form of DTT (REDUCTACRYL Reagent, Cat. No. 233157) can be used. Oxidized dithiothreitol: ≤0.5%.

Oxidized dithiothreitol: ≤0.5%.

Application

• Cyclic nucleotide phosphodiesterase in Dictyostelium discoideum: interconversion of two enzyme forms.: Discusses the role of Cleland′s Reagent in differentiating forms of cyclic nucleotide phosphodiesterase, showcasing its utility in enzymatic studies and its broader implications in biochemistry research (Chassy BM, 1972).

Packaging

Packaged under inert gas

Preparation Note

Following reconstitution, aliquot, purge with inert gas, and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

Gailis, L. 1994. Eur. J. Pharmacol. 292, 39.
Lauriault, V.V.M., and O′Brien, P.J. 1991. Mol. Pharmacol.40, 125.
Klonne, D.R., and Johnson, D.R. 1988. Toxicol. Lett.42, 199.
Zahler, W.L., and Cleland, W.W. 1968. J. Biol. Chem.243, 716.
Cleland, W.W. 1964. Biochemistry3, 480.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Toxicity: Harmful (C)

Informations sur la sécurité

• pictograms: GHS05,GHS07
• signalword: Danger
• hcodes: H302,H315,H318
• pcodes: P264 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338 - P332 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Skin Irrit. 2
• Classe de stockage: 11 - Combustible Solids
• wgk: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable