Scientific Reports of the Faculty of Agriculture, Okayama University
Published by the Faculty of Agriculture, Okayama University
ONLINE ISSN : 2186-7755

自然環境より単離したThibacilus ferroxidansの鉄酸化酵素及び硫化水素酸化酵素活性

Sugio, Tsuyoshi
Fujiwara, Isao
Hanase, Mari
Kamimura, Kazuo Kaken ID researchmap
Published Date
1998-02
Abstract
It has been reported that both iron oxidase and hydrogen sulfide: ferric ion oxidoreductase (SFORase) were involved in bacterial leaching of metal ions from sulfide ores, and the amount of Cu2+ solubilized from copper ore by iron-oxidizing bacterium differed from strain. The activities of iron oxidase SFORase of iron-oxidizing bacteria isolated from the natural environments were determined. Iron-oxidizing activity and SFORase activity of 200 strains ranged from 1.20-1.65γmol/mg/min and from 0.11-2.80 γmol/mg/min, respectively. The findings that a remarkable difference was observed in the levels of SFORase activity, but not in iron-oxidizing activity, suggest that SFORase, but not iron oxidase, is the enzyme that determines the bacterial leaching activity of this bacterium.
Keywords
iron oxidase
sulfur oxidase
iron-oxidizing bacterium
bacterial leaching
ISSN
0474-0254
NCID
AN00033029