Gaucher spleen sphingolipid activator protein 2 was fractionated into concanavalin A binding- and non-binding fractions. These fractions each contained several bands on non-denaturing polyacrylamide gel electrophoresis (PAGE). The two fractions were further fractionated by electroblotting the proteins from preparative gels onto nitrocellulose, staining with Ponceau S to locate the bands of prot...

Staining of blot membranes enables the visualization of bound proteins. Proteins are usually transferred to blot membranes by electroblotting, by direct spotting of protein solutions, or by contact blots. Staining allows the efficiency of transfer to the membrane to be monitored. This unit describes protocols for staining proteins after electroblotting from polyacrylamide gels to blot membranes...

A novel sensitive and relatively selective kinetic method is presented for the determination of V(V), based on its catalytic effect on the oxidation reaction of Ponceau Xylydine by potassium bromate in presence of 5-sulfosalicylic acid (SSA) as activator. The reaction was monitored spectrophotometrically by measuring the decrease in absorbance of Ponceau Xylydine at 640 nm between 0.5 to 7 min ...

We have evaluated results for albumin obtained by a standard procedure for cellulose acetate electrophoresis of proteins in serum. The Ponceau S-stained .albumin and globulins were eluted and the albumin was calculated by the generally accepted formula [(albumin-bound dye absorbance/absorbance of total protein-bound dye) X total serum protein concn] and by the formula (absorbance of albumin-bou...

Total urine protein was measured in 132 samples by an automated benzethonium chloride method and the Ponceau-S/trichloroacetic acid (PS/TCA) method. Of these, 27% gave a result 0.1 g/L or more higher by the benzethonium chloride method. Of this 27%, most contained an abnormally high concentration of the acute-phase reactant, alpha 1-acid glycoprotein. By assaying urine containing added alpha 1-...

The preparation described here is permanently cleared and water proof. It has the advantage of being fixed to a glass slide for easy handling and storage, yet it is adaptable for scanning (EEL ‘Scanner’). After staining the cellulose acetate electropherograms (Oxoid, OX0 Ltd.,) in Ponceau S, they are rinsed in 5% acetic acid and air dried. The strips (2.5 x IO cm) are trimmed such that each pro...

HIGHLIGHTS The adsorbent activated with H2PO4 removed around 100% of Ponceau 4R dye. increase in temperature influenced the maximum adsorptive capacity. Langmuir's isotherm was better suited to experimental data