Purification of human erythrocyte glucose 6-phosphate dehydrogenase and glutathione reductase enzymes using 2',5'-ADP Sepharose 4B affinity column material in single chromatographic step.
The enzymes of glucose 6-phosphate dehydrogenase and glutathione reductase were purified from human erythrocytes in one chromatographic step consisting of the use of the commercially available resin 2',5'-ADP Sepharose 4B by using different washing buffers. Ammonium sulfate (30-70%) precipitation was performed on the hemolysate before applying to the affinity column. Using this procedure, G6PG, having the specific activity of 22.9 EU/mg proteins, was purified with a yield of 43% and 9150-fold; GR, having the specific activity of 20.7 EU/mg proteins, was purified with a yield of 26% and 8600-fold. The purity of the enzymes was checked on sodium dodecyl sulfate-polyacrylamide gel electrophoresis and each purified enzyme showed a single band on the gel. This procedure has advantages of preventing of enzyme denaturation, short experimental duration, and use of less chemical materials for purification of the enzymes.
Biotechnology Application and Research Center, Atatürk University, Erzurum, Turkey. eratm@atauni.edu.tr
Mustafa
M
Erat
D002845:Chromatography; D004591:Electrophoresis, Polyacrylamide Gel; D004912:Erythrocytes / Q000201:enzymology*; D005954:Glucosephosphate Dehydrogenase / Q000302:isolation & purification / Q000378:metabolism*; D005980:Glutathione Reductase / Q000302:isolation & purification / Q000378:metabolism*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D012685:Sepharose / Q000737:chemistry*
D012685:Sepharose; D005954:Glucosephosphate Dehydrogenase; D005980:Glutathione Reductase