Purification and characterization of catalase enzymes from chicken liver and sheep erythrocytes


Çoban T. A. , Çiftci M., Özdemir H., Altıkat S.

ASIAN JOURNAL OF CHEMISTRY, cilt.19, ss.3941-3953, 2007 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 19 Konu: 5
  • Basım Tarihi: 2007
  • Dergi Adı: ASIAN JOURNAL OF CHEMISTRY
  • Sayfa Sayıları: ss.3941-3953

Özet

Catalase enzyme (H2O2: H2O2 oxidoreductase; E.C.1.11.1.6) was purified from chicken liver and sheep erythrocytes, using DEAE-Sephadex A50 ion exchange chromatography and some characteristics of the enzymes were investigated. The purification procedure was composed of 3 steps i.e., homogenate/hemolisate preparation, ammonium sulfate precipitation and DEAE-Sephadex A50 ion exchange chromatography. Chicken liver and sheep erythrocytes enzymes, having the specific activity of 560.46 and 1017.5 EU/mg proteins were purified with a yield of 30.06 and 22.23 %; 190.63 and 643.9-fold, respectively. In order to control the purification of enzymes were done, sodium dodecyl sulfate polyacrilamide gel electrophoresis (SDS-PAGE). SDS-PAGE showed a single band for each enzyme. Optimal pH, stable pH, optimal temperature, KM and V-max values for H2O2 were also determined for the each enzyme. In addition, molecular weight and subunit molecular weights were found by SIDS-PAGE and gel filtration chromatography respectively.