Purification of extra-cellular cellulolytic enzymes from C e l l u l o mssp. strain 0,
isolated from forest soil in the north of Iran , was studied by using gel filtration and ion-exchange chromatography. Two endo-glucanases (Endo-I & Endo-II) and one exo-glucanase (Exo-I) were purified to hornogenity . The purified enzymes had
molecular weights of about 39.000,70.000 and 90.000 daltons for Endo-I, Endo-II
and Exo-I, respectively. Heavy metal ions, like Fe and CU inactivated the
enzymes by about 80%, while Zn and CO had no effect on the enzyme activities