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Projects / Programmes source: ARIS

Biokemija steroidov pri glivah (Slovene)

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Research activity

Code Science Field Subfield
1.05.00  Natural sciences and mathematics  Biochemistry and molecular biology   

Code Science Field
P340  Natural sciences and mathematics  Lipids, steroids, membranes 
P310  Natural sciences and mathematics  Proteins, enzymology 
Keywords
17beta-hydroxysteroid dehydrogenase; steroidogenesis; steroid binding proteins; filamentous fungi; yeasts; extremophiles; Cochliobolus lunatus; Pleurotus ostreatus
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (6)
no. Code Name and surname Research area Role Period No. of publications
1.  08777  PhD Bronislava Črešnar  Biochemistry and molecular biology  Researcher  1998 - 2001  98 
2.  11699  PhD Tea Lanišnik Rižner  Metabolic and hormonal disorders  Researcher  1998 - 2001  574 
3.  18845  Milena Marušič    Researcher  1999 - 2001  0 
4.  07228  PhD Zdenka Ovčak  Oncology  Researcher  1998 - 2001  78 
5.  04350  PhD Matjaž Zorko  Neurobiology  Researcher  1998 - 2001  190 
6.  03082  PhD Marija Žakelj-Mavrič  Biochemistry and molecular biology  Head  1998 - 2001  117 
Organisations (1)
no. Code Research organisation City Registration number No. of publications
1.  0381  University of Ljubljana, Faculty of Medicine  Ljubljana  1627066  48,238 
Abstract
According to our previous results the existence of steroid hormone signalling system in the filamentous fungus Cochliobolus lunatus was suggested. In the mentioned ascomycetous fungus we were able to prove the presence of the three components of the system: 17beta-hydroxysteroid dehydrogenase (17beta-HSD), androgen binding proteins and steroid hormone signalling molecule testosterone. Our main interest was focused to the characterization of the individual components, especially to 17beta-hydroxysteroid dehydrogenase in order to find out their role in the fungus. Later the study of the system was extended to basidiomycetous fungus Pleurotus ostreatus. Some differences between the individual components of the two fungal steroid hormone systems were detected. Since we are interested in the distribution of the individual components of the system in eucaryotic microorganisms 17beta-HSD activity will also be tested in the representatives of halophilic and mesophilic yeasts. For our future experiments, a more detailed characterization of the mentioned 17beta-HSD is planned; e.g. kinetic study of the recombinant 17beta-HSD from Cochliobolus lunatus and the study of 17beta-HSD from Pleurotus ostreatus and other fungi by modern mass spectrometry techniques. Because of its suggested involvment in beta-oxidation of fatty acids and thus possible homology to 17beta-HSD type IV beta-hydroxybutyryl CoA dehydrogenase from Pleurotus ostreatus will be studied as well. The results will contribute to the elucidation of the role of 17beta-HSD in eucaryotic microorganisms and the evolution of 17beta-HSD.
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