Used to reduce disulfide linkages in solubilizing proteins for gel electrophoresis. Also reduces excess oxidative polymerization of catalysts. 1 ml = approx. 1.12 g
Cell Culture Reagent Used to reduce disulfide linkages in solubilizing proteins for gel electrophoresis. Also reduces excess oxidative polymerization of catalysts. Density = 1.12 g/ml
Application BME 用于在聚丙烯酰胺凝胶电泳前还原蛋白质二硫键,通常以 5% 的浓度包含在用于 SDS-PAGE 的样本缓冲液中。裂解分子间(亚基之间)的二硫键,从而使蛋白质亚基在 SDS-PAGE 上各自分开。裂解分子内(亚基内)的二硫键从而使亚基完全变性,以便每个肽按照其链长迁移而不受二级结构的影响。 Other Notes Isolation of RNA using guanidinium salts. Inclusion of a reductant enhances denaturation by breaking intramolecular protein disulfide bonds1
• In the presence of BF3 etherate, reacts with carbonyl compounds to give monothioacetals (1,3-oxathiolanes): J. Org. Chem., 33, 2133 (1968). Amberlyst 15 is also effective: Synthesis, 1826 (2001), as is In(OTf)3: Synlett, 1535 (2002). 1,3-Oxathiolanes can be prepared from acid-sensitive aldehydes with LiBH4 as catalyst in acetonitrile: Synlett, 238 (2001). Cleavage can be effected, e.g. with chloramine-T: Tetrahedron Lett., 3445 (1971), isoamyl nitrite: Tetrahedron. Lett., 3561 (1978), or periodic acid: Tetrahedron Lett., 37, 4331 (1996). Selective cleavage of oxathiolanes in the presence of dithiolanes has been achieved with triphenylcarbenium tetrafluoroborate: J. Chem. Soc., Perkin 1, 542 (1972), or 4-nitrobenzaldehyde catalyzed by TMS-OTf: J. Chem. Soc. Chem. Commun., 1937 (1994). Compare 1,2-Ethanedithiol, L12865.
• 2-Mercaptoethanol is a reagent for the specific cleavage of the N-dithiasuccinimide protecting group from amines. See Chlorocarbonylsulfenyl chloride, L06432.
• Protective agent for preventing oxidation of thiol groups in proteins: Enzyme Assays, R. Eisenthal and M. J. Danson, Eds., OUP, Oxford (1992), p 265.