Turkish Journal of Chemistry
DOI
-
Abstract
Superoxide dismutase (SOD) was isolated from sheep erythrocyte. SOD activity was measured under the optimized assay conditions by observing the variations of autoxidation rate of 6-hydroxydopamine (6-OHDA). The enzyme was characterized as containing copper and zinc and was insensitive to chloroform-ethanol mixture but inhibited by cyanide and hydrogen peroxide. The activity variations and stability properties of sheep erythrocyte Cu, Zn-SOD were investigated under the optimized activity assay conditions by observing inhibition change at the autoxidation rate of 6-OHDA. The optimum pH and temperature of sheep erythrocyte Cu, Zn-SOD were found to be 9.4 and 30$^{\circ}$C respectively. The enzyme showed high pH- and thermal-stability properties around neutral pH and up to 37$^{\circ}$C after 2.5 h incubation. Variations in the inhibition percentage of autoxidation were investigated in 0.2-0.9 mM range of 6-OHDA. The same procedures were repeated by adding catalase also.
Keywords
Superoxide radical, Cu, Zn-superoxide dismutase, 6-hydroxydopamine, dismutation.
First Page
109
Last Page
116
Recommended Citation
TARHAN, LEMAN and TÜZMEN, M. NALAN (2000) "Some Properties of Cu, Zn-Superoxide Dismutase from Sheep Erythrocyte," Turkish Journal of Chemistry: Vol. 24: No. 2, Article 1. Available at: https://journals.tubitak.gov.tr/chem/vol24/iss2/1
