Microbial Transformations of Selenium
AUTOR(ES)
Doran, J. W.
RESUMO
Resting cell suspensions of a strain of Corynebacterium isolated from soil formed dimethyl selenide from selenate, selenite, elemental selenium, selenomethionine, selenocystine, and methaneseleninate. Extracts of the bacterium catalyzed the production of dimethyl selenide from selenite, elemental selenium, and methaneseleninate, and methylation of the inorganic Se compounds was enhanced by S-adenosylmethionine. Neither trimethylselenonium nor methaneselenonate was metabolized by the Corynebacterium. Resting cell suspensions of a methionine-utilizing pseudomonad converted selenomethionine to dimethyl diselenide. Six of 10 microorganisms able to grow on cystine used selenocystine as a sole source of carbon and formed elemental selenium, and one of the isolates, a pseudomonad, was found also to produce selenide. Soil enrichments converted trimethylselenonium to dimethyl selenide. Bacteria capable of utilizing trimethylselenonium, dimethyl selenide, and dimethyl diselenide as carbon sources were isolated from soil.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=170570Documentos Relacionados
- Microbial transformations of 7,2-dimethylbenz[a]anthracene.
- Accumulation of selenium in a model freshwater microbial food web.
- Nutrient Limitation and Adaptation of Microbial Populations to Chemical Transformations
- Microbial transformations of ferulic acid by Saccharomyces cerevisiae and Pseudomonas fluorescens.
- Microbial transformations of natural antitumor agents: oxidation of lapachol by Penicillium notatum.
