Date: 26 November 2013
Secondary metabolites, structure diagram: Trivial name – malformins
Copyright: n/a
Notes:
Species: A. nigerSystematic name: Cyclo(D-cysteinyl-D-cysteinyl-L-valyl-D-leucyl-L-leucyl), cyclic (1®2)-disulfideMalformin AMolecular formulae: C23H39N5O5S2Molecular weight: 529.718Chemical abstracts number: 3022-92-2Selected references: Kim KW, Sugawara F, Yoshida S, Murofushi N, Takahashi N, Curtis RW. Structure of malformin B, a phytotoxic metabolite produced by Aspergillus niger. Biosci Biotechnol Biochem. 1993 May;57(5):787-91.Toxicity: mouse LD50 intraperitoneal 3100ug/kg (3.1mg/kg) EFFECTS: GASTROINTESTINAL: OTHER CHANGES. LIVER: OTHER CHANGES. KIDNEY, URETER, AND BLADDER: OTHER CHANGES Agricultural and Biological Chemistry. Vol. 39, Pg. 1325, 1975.
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Image 1. The chest x-ray shows extensive bilateral nodular disease, most consistent with a fungal infection, or possibly tuberculosis. He was treated with a bucket face mask with 80% oxygen and voriconazole.
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A Colonies on MEA +20 % sucrose after 2 weeks; B ascomata, x 40; C conidiophore of Aspergillus glaucus x 920;D conidiophore of Aspergillus glaucus x920 E. portion of ascoma with asci x 920. F ascospores x2330.
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Scanning electron micrographs of A. fumigatus conidia of transformants rodB-02 (b). Size bar, 100 nm.
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Scanning electron micrographs of A. fumigatus conidia of the wild-type G10 strain (a). Size bar, 100 nm.
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Scanning electron micrographs of A. fumigatus conidia of rodA rodB-26 (d).Size bar, 100 nm.
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Scanning electron micrograph of an A.fumigatus conidium of rodA-47 (c), showing the hydrophobic rodlets covering the surface. Size bar, 100 nm.
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