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Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists
Published on: November 15, 2013
Steroid hormone signalling system and fungi
M Zakelj-Mavric1, T Kastelic-Suhadolc, A Plemenitas
1Institute of Biochemistry, Medical Faculty, Ljubljana, Slovenia.
Summary
This study identified key steroid hormone signaling components in the fungus Cochliobolus lunatus. These findings suggest that primitive signaling pathways exist in modern microorganisms.
Area of Science:
- Mycology
- Molecular Biology
- Biochemistry
Background:
- Steroid hormones regulate crucial physiological processes in mammals.
- The presence and function of steroid hormone signaling pathways in fungi remain largely unexplored.
Purpose of the Study:
- To investigate the presence and potential role of steroid hormone signaling components in the filamentous fungus Cochliobolus lunatus.
- To compare these fungal components with their mammalian counterparts.
Main Methods:
- Determination of 17 beta-hydroxysteroid dehydrogenase activity.
- Identification of androgen binding proteins.
- Quantification of testosterone levels in Cochliobolus lunatus.
Main Results:
- The study successfully identified 17 beta-hydroxysteroid dehydrogenase, androgen binding proteins, and testosterone in Cochliobolus lunatus.
- This marks the first documented discovery of these steroid hormone signaling elements in a fungal species.
- The identified components and their potential roles were analyzed in comparison to mammalian systems.
Conclusions:
- The findings support the hypothesis that rudimentary signal transduction systems are present in contemporary eukaryotic microorganisms.
- The presence of these steroid hormone signaling components suggests a conserved evolutionary role in eukaryotes.
- Further research is warranted to elucidate the precise functions of these pathways in fungal biology.
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