Purification and characterization of an extracellular cellulase from Anoxybacillus gonensis O9 isolated from geothermal area in Turkey

J Environ Biol. 2015 Nov;36(6):1319-24.

Abstract

In the present study, cellulase was purified and characterized from Anoxybacillus gonensis (Gen bank Number: KM596794) which was isolated and characterized from Agri Diyadin Hot spring. It was found to synthesize cellulase which had a wide range of industrial applications. Twenty four-hour-cultured bacteria induced cellulase production and specific activities during the purification steps were 1.47, 81.06 and 109.4 EU mg(-1) protein at crude extract, ammonium sulphate precipitated and DEAE-Sephadex purification steps. The highest enzyme activity was observed at 50°C and the optimum range of pH was 3-10. Molecular weight of enzyme was determined approximately 40kDa. The kinetic parameters of cellulase against carboxymethylcellulose (CMC) were 153.4 pmol min(-1) mg for Vmax and 0.46mM for Km. Among effectors of the enzyme, Zn2+, Ca2+, Co2+ and EDTA decreased enzyme activity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anoxybacillus / enzymology*
  • Anoxybacillus / metabolism
  • Cellulases / genetics
  • Cellulases / metabolism*
  • Gene Expression Regulation, Bacterial / physiology
  • Gene Expression Regulation, Enzymologic / physiology
  • Hot Springs
  • Kinetics
  • Substrate Specificity
  • Temperature

Substances

  • Cellulases