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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Purification of glucose 6-phosphate dehydrogenase from Buffalo (Bubalus bubalis) erythrocytes and investigation of some kinetic properties.

Glucose 6-phosphate dehydrogenase (G6PD) was purified from buffalo (Bubalus bubalis) erythrocytes and some characteristics of the enzyme were investigated. The purification procedure was composed of two steps: hemolysate preparation and 2('),5(')-ADP-Sepharose 4B affinity gel chromatography. Thanks to the two consecutive procedures, the enzyme, having a specific activity of 69.7EU/mg proteins, was purified 650-fold with a yield of 31%. Optimal pH, stable pH, optimal temperature, molecular weight, and K(M) and V(max) values for NADP(+) and glucose 6-phosphate (G6-P) substrates were also determined for the enzyme. In addition, K(i) values and the type of inhibition were determined by means of Lineweaver-Burk graphs obtained for such inhibitors as ATP, ADP, NADPH, and NADH.[1]


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