Turkish Journal of Veterinary & Animal Sciences
DOI
-
Abstract
Glucose 6-phosphate dehydrogenase (G6PD) was purified from goose erythrocytes and some characteristics of the enzyme were investigated. The purification procedure was composed of 3 steps: hemolysate preparation, ammonium sulfate precipitation, and 2', 5'-ADP Sepharose 4B affinity gel chromatography. Thanks to the 3 consecutive procedures, the enzyme, having a specific activity of 36.2 EU/mg protein, was purified for a yield of 68.79% and 3892 folds; to ascertain enzyme purity, SDS-PAGE was performed. 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 inhibition type were determined by means of Lineweaver-Burk graphs obtained for such inhibitors as ATP, ADP and NADPH. These materials inhibited the enzyme in a noncompetitive manner.
Keywords
Goose, purification, glucose 6-phosphate dehydrogenase, erythrocyte
First Page
1179
Last Page
1185
Recommended Citation
BEYDEMİR, ŞÜKRÜ; YILMAZ, HAYRULLAH; ÇİFTÇİ, MEHMET; BAKAN, EBUBEKİR; and KÜFREVİOĞLU, ÖMER İRFAN (2003) "Purification of Glucose 6-Phosphate Dehydrogenase From Goose Erythrocytes and Kinetic Properties," Turkish Journal of Veterinary & Animal Sciences: Vol. 27: No. 5, Article 20. Available at: https://journals.tubitak.gov.tr/veterinary/vol27/iss5/20
