Open AccessOxidation and reduction of arsenic by Sulfolobus acidocaldarius strain BC
Author(s) -
Mikael Sehlin H.,
Börje Lindström E.
Publication year - 1992
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1992.tb05045.x
Subject(s) - sulfolobus acidocaldarius , strain (injury) , arsenic , sulfolobus , oxidation reduction , chemistry , microbiology and biotechnology , biochemistry , biology , archaea , organic chemistry , gene , anatomy
The mineral leaching archaebacterium Sulfolobus acidocaldarius strain BC is shown to have the ability to oxidise arsenite to arsenate. Arsenite oxidation activity was 8‐fold higher for cells grown in the presence of arsenite when compared with cells grown without arsenite. In cell‐free extracts, the arsenite oxidation activity was found in the membrane fraction. The arsenite oxidation activity was sensitive to proteinase K and showed the highest activity at acidic pH. A tetrathionate‐dependent arsenate reduction activity was also observed.