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  • 1
    Electronic Resource
    Electronic Resource
    The effect of arsenicals on cell suspension cultures of the Madagascar periwinkle (Catharanthus roseus) (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 3 (1989), S. 515-521 
    Details
    ISSN: 0268-2605
    Keywords: Catharanthus roseus ; NMR spectra ; arsenic compounds ; alkaloid metabolites ; methylarsenicals ; uptake ; growth ; methylation ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Catharanthus roseus cells were grown in the presence of arsenite, arsenate, methylarsonate and dimethylarsinate. Cell growth and arsenical uptake were monitored. Reduction of arsenate, methylation of arsenic and demethylation of methylarsenic species are described. Alkaloid production by the cells is dramatically influenced by the presence of arsenicals. 1H NMR studies of methylarsonate uptake by whole cells of C. roseus are reported.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590030608
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  • 2
    Electronic Resource
    Electronic Resource
    The metabolism of methylarsine oxide and sulfide (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 3 (1989), S. 71-78 
    Details
    ISSN: 0268-2605
    Keywords: Arsenic ; metabolism ; Candida humicola ; methylarsines ; methylarsine oxide ; methylarsine sulfide ; micro-organisms ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Methylarsine oxide and sulfide are more toxic to Candida humicola than arsenite; the sulfide is rapidly metabolized to trimethylarsine (Me3As) and methylarsine (MeAsH2) and the oxide to dimethylarsinic acid [Me2AsO(OH)]. Cell-free extracts of C. humicola also convert the oxide to Me2AsO(OH). The glutathione (RSH) derivative Me2AsSR is metabolized by C. humicola to Me3As and Me2AsH, but some other Me2AsSR′ compounds are unaffected. Studies involving the interaction of the arsenic(III) compounds with natural ecosystems and other micro-organisms such as Scopulariopsis brevicaulis, Straptococcus sanguis, Escherichia coli, and Veillonella alcalescens are described.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590030107
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    Paper (German National Licenses)
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