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Folia Microbiologica

, 45:391 | Cite as

Progesterone transformation as a biochemical aid in classification of the genusEmericella

  • A. A. Zohri
Papers

Abstract

A total of 65 isolates representing 13Emericella taxa (5 isolates of each of 12 species and 1 variety) had the ability to transform progesterone into 11α-hydroxyprogesterone. A systematic variation could be observed between the different testedEmericella taxa with respect to the transformation products. The isolates were divided according to the transformation types into six groups: (1) progesterone was hydroxylated into 6β-hydroxyprogesterone, 11α-hydroxyprogesterone and 6β, 11α-dihydroxyprogesterone— found inEmericella acristata andE. dentata; (2) E. aurantio-brunna andE. parvathecia hydroxylated progesterone into 11α-hydroxyprogesterone, 17α-hydroxyprogesterone and 11α,17α-dihydroxyprogesterone; (3)E. nidulans andE. quadrilineata formed the same three products as members of group (2) and form epicortisol; (4)E. nidulans var.lata, E. bicolor andE. variecolor transformed progesterone into a mixture of mono- di-and trihydroxy products; (5)E. striata andE. sublata exhibited an oxidative splitting of the progesterone side chain in position C-17 and hydroxylated progesterone into mono-and dihydroxy products; (6)E. rugulosa andE. unguis had the ability to degrade progesterone side-chain and to hydroxylate it into mono-, di- and trihydroxy products. This biochemical differentiation may supplement the morphological and other biochemical criteria used in the classification of theEmericella taxa.

Keywords

Progesterone Cladosporium Cladosporioides Biochemical Differentiation Microbiological Transformation Steroid Transformation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Folia Microbiologica 2000

Authors and Affiliations

  • A. A. Zohri
    • 1
  1. 1.Date Processing PlantAl-Ahsa Food Industries Co.Al-AhsaSaudi Arabia

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