a buffer in hydrophobic interaction chromatography 10 a buffer in cation exchange chromatography 11 Read more about Hopax MES 7) MOPS buffer Useful pH range: 6.5 - 7.9 pKa (25 C): 7.14 Molecular weight: 209.3g/mol MOPS, 3-(N-Morpholino)Propanesulfonic Acid, MES, 2-Morpholinoethanesulfonic acid, are commonly used in biological experiments, and played very important role. Word of caution: typical reducing agents such as dithiothreitol and beta-mercaptoethanol do not enter Bis-Tris gels to migrate with the proteins • Chloride (-) is supplied by the gel buffer and serves as a leading ion due to its high affinity to the anode as compared to other anions in the system. However, MES … Prepare 500 mL of 20X MOPS SDS Running Buffer 50 mM MES, 50 mM Tris Base, 0.1% SDS, 1 mM EDTA, pH 7.3 50 mM MOPS, 50 mM Tris Base, 0.1% SDS, 1 mM EDTA, pH … For MOPS buffer, run at 200V constant voltage for ~50 min. Expect 100-115 mA current at the beginning and 60-70 mA at the end. 7. The Tris-acetate gel system. In general, ideal pH range for HEPES is 6.8 to 8.2, but that of MOPS is 6.5 to 7.9. 3-(N-Morpholino)propanesulfonic acid,chemical formula is C7H15NO4S, Mwt 209.8,10 x MOPS Buffer is intended for use at 1x as the electrophoresis and gel running buffer … I think you can safely replace HEPES by MOPS with in the pH ranges they work. For MES buffer, run … Buffer solution is used in biochemical experiments to stabilize the pH of the system. • Running buffer ions are Tris, MES or MOPS, and SDS (pH 7.3) • Gel operating pH is 7.0 Figure 3. MOPS is used for mid-sized proteins while MES resolves smaller proteins. The gel buffer ions are Bis-Tris+ and Cl-(pH 6.4). • MES or MOPS (-) serves as+

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