Evidence for two transporters of sulfur and selenium oxyanions in Clostridium pasteurianum
- 1 May 1988
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Microbiology
- Vol. 34 (5) , 700-703
- https://doi.org/10.1139/m88-118
Abstract
Kinetic uptake studies of the inorganic anions SO42-, SeO42-, and SeO32- into Clostridium pasteurianum showed that these dianions transport systems obeyed Michaelis-Menten kinetics. Analysis of Km and Ki values for these dianions suggest there were two ports of entry for these oxyanions into the cells, with SO42- and SeO42- having a common porter and SeO32-having a separate transporter. The practical importance of these experiments is released to the environment where some sediments contaminated with inorganic selenium compounds are in the concentration range which approximates the Km values for SeO32- (50.mu.M)/SeO42- (65 .mu.M) in C. pasteurianum.This publication has 6 references indexed in Scilit:
- High incidence of selenite-resistant bacteria from a site polluted with seleniumApplied and Environmental Microbiology, 1987
- Single transporter for sulfate, selenate, and selenite in Escherichia coli K-12Journal of Bacteriology, 1985
- Stable isotope fractionation by Clostridium pasteurianum. 5. Effect of SeO42− on the physiology and associated sulfur isotope fractionation during SO32− and SO42− reductionsCanadian Journal of Microbiology, 1982
- Stable isotope fractionation by Clostridium pasteurianum. 3. Effect of SeO32– on the physiology and associated sulfur isotope fractionation during SeO32– and SeO42– reductionsCanadian Journal of Microbiology, 1980
- Assimilation of selenate and selenite by Salmonella typhimuriumCanadian Journal of Microbiology, 1980
- Stable isotope fractionation by Clostridium pasteurianum. 2. Regulation of sulfite reductases by sulfur amino acids and their influence on sulfur isotope fractionation during SO32− and SO42− reductionCanadian Journal of Microbiology, 1978