Microbial transformations of selenium
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. 21 references, 4 figures, 2 tables.
- Research Organization:
- Cornell Univ., Ithaca, NY
- OSTI ID:
- 6300969
- Journal Information:
- Appl. Environ. Microbiol.; (United States), Journal Name: Appl. Environ. Microbiol.; (United States) Vol. 33:1; ISSN AEMID
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
59 BASIC BIOLOGICAL SCIENCES
AMINO ACIDS
BACTERIA
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
CORYNEBACTERIUM FASCIANS
CYSTINE
DATA
DISULFIDES
DRUGS
ELEMENTS
EXPERIMENTAL DATA
GROWTH
INFORMATION
LIPOTROPIC FACTORS
METABOLISM
METHIONINE
METHYLATION
MICROORGANISMS
MINERAL CYCLING
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
SELENATES
SELENIDES
SELENITES
SELENIUM
SELENIUM COMPOUNDS
SEMIMETALS