Secondary metabolites, 3D structure: Trivial name – Asterriquinone A1

Date: 26 November 2013

Secondary metabolites, 3D structure: Trivial name – Asterriquinone A1

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Notes:

Species: A. terreusSystematic name: 2,5-Cyclohexadiene-1,4-dione, 2,5-bis[1-(1,1-dimethyl-2-propenyl)-1H-indol-3-yl]-3,6-dimethoxy-Molecular formulae: C34H34N2O4Molecular weight: 534Chemical abstracts number: 60924-75-6Selected references: Arai, Kunizo; Masuda, Kikuo; Kiriyama, Noriki; Nitta, Keiichi; Yamamoto, Yuzuru; Shimizu, Sakae (Fac. Pharm. Sci., Kanazawa Univ., Kanazawa 920, Japan). Chem. Pharm. Bull., 29(4), 961-9 (English) 1981.


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  • A. versicolor by microscopy showing very long thin conidiophores.

    aspvers4

  • Pigmentation of Aspergillus versicolor colonies ranged from pale green to greenish-beige, pink-green, dark green and brown. Reverse is usually reddish. The growth rate is usually slow. Cultured on Sabouraud dextrose agar with chloramphenicol.

    aspvers3

  • A Colonies on MEA after one week; B, C conidial heads with tip of conidiophire, x920; D conidial head, x 2330; E conidial heads x920

    aspvers2

  • A Colonies on MEA + 20% sucrose after one week; B detail of colony showing columnar conidial heads x 44 ; C conidial heads x 920; D conidia x2330

    A

  • Scanning electron micrograph photo of conidia. Scale bar: 1 µm.

    piperis F

  • Conidia-forming head and culture plate

    A

  • Cultures are grown on malt extract agar for 5-7 days at 30°C.
    Light microscopy-1000x stained with lacto-phenol and cotton blue.

    niger

  • A Colonies on MEA +20% sucrose after one week; B ascomata x 40; C conidiophores x 920; D ascospores x2330; E ascoma x 230; F portion of ascoma with asci and ascospores, x 920.

    Aspergillus_chevalieri