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  • 1
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metabolic Products of Microorganisms, 117. L-Arginyl-D-allo-threonyl-L-phenylalanine, an Amino Acid Antagonist from the Fungus Keratinophyton terreumAn antibiotically active tripeptide was isolated from laboratory cultures of the dermatophyte Keratinophyton terreum. Inhibitory effects have been observed on fungi (Paecilomyces varioti, Mucor miehei) but not on bacteria (Bacillus subtilis, Escherichia coll). The inhibition is antagonized by L-histidine and by L-threonine. The structure was elucidated by gas chromatographic and mass spectrometric investigations and was confirmed by comparison with synthetic L-arg-DL-allo-thr-L-phe. Synthetic L-arg-L-thr-L-phe does not show antifungal activity. Conditions for the fermentation and isolation of the antibiotic are reported.
    Notes: Aus Laboratoriumskulturen eines Dermatophyten wurde eine Substanz isoliert, die Pilze (Paecilomyces varioti, Mucor miehei), nicht aber Bakterien (Bacillus subtilis, Escherichia coli) hemmt. Die antibiotische Wirkung wird durch L-Histidin und L-Threonin aufgehoben. Die Struktur des Antibioticums wurde durch gaschromatographische und massenspektrometrische Untersuchungen als L-Argnyl-D-allo-threonyl-L-phenylalanin erkannt und durch Vergleich mit dem synthetischen Tripeptid L-Arginyl-DL-allo-threonyl-L-phenylalanin bestätigt. Synthetisches L-Arg-L-Thr-L-Phe ist antifungisch inaktiv. Bedingungen für Fermentation und Gewinnung des Antibioticums werden angegeben.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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