Purification and some properties of hamster liver aldehyde oxidase

Biol Pharm Bull. 1999 Nov;22(11):1246-8. doi: 10.1248/bpb.22.1246.

Abstract

Aldehyde oxidase was purified from hamster liver cytosol by ammonium sulfate fractionation, chromatography on DEAE-cellulose and Phenyl-Toyopearl, and HPLC-gel filtration on TSK-gel G3000SW(XL) column. The purified enzyme was homogeneous by the criterion of sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Its molecular weight was determined to be 144800 by SDS-PAGE and 288000 by HPLC gel filtration. The isoelectric point was pH 5.1. The apparent Km and Vmax for benzaldehyde and 2-hydroxypyrimidine were 19.0 and 4.4 microM, and 165 and 211 nmol/min/mg protein, respectively. The benzaldehyde oxidase activity was markedly inhibited by menadione and chlorpromazine. The substrate specificity was different from those of the enzymes from other animals.

Publication types

  • Comparative Study

MeSH terms

  • Aldehyde Oxidase
  • Aldehyde Oxidoreductases / isolation & purification*
  • Animals
  • Chromatography, Gel
  • Cricetinae
  • Cytosol / enzymology
  • Electrophoresis, Polyacrylamide Gel
  • Guinea Pigs
  • Kinetics
  • Liver / enzymology*
  • Male
  • Mesocricetus
  • Molecular Weight
  • Proteins / chemistry
  • Rabbits
  • Species Specificity

Substances

  • Proteins
  • Aldehyde Oxidoreductases
  • Aldehyde Oxidase