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Updated: Jul 27, 2026
Rapid Identification of Chemical Genetic Interactions in Saccharomyces cerevisiae
Published on: April 5, 2015
Structural and functional comparison of Saccharomonospora azurea strains in terms of primycin producing ability
Márk Kovács1,2, Dénes Seffer1, Ágota Pénzes-Hűvös1
1PannonPharma Pharmaceutical Ltd., 7720, Pécsvárad, Hungary.
Abstract:
Emerging and re-emerging microbial pathogens, together with their rapid evolution and adaptation against antibiotics, highlight the importance not only of screening for new antimicrobial agents, but also for deepening knowledge about existing antibiotics. Primycin is a large 36-membered non-polyene macrolide lactone exclusively produced by Saccharomonospora azurea. This study provides information about strain dependent primycin production ability in conjunction with the structural, functional and comparative genomic examinations. Comparison of high- and low-primycin producer strains, transcriptomic analysis identified a total of 686 differentially expressed genes (DEGs), classified into diverse Cluster of Orthologous Groups. Among them, genes related to fatty acid synthesis, self-resistance, regulation of secondary metabolism and agmatinase encoding gene responsible for catalyze conversion between guanidino/amino forms of primycin were discussed. Based on in silico data mining methods, we were able to identify DEGs whose altered expression provide a good starting point for the optimization of fermentation processes, in order to perform targeted strain improvement and rational drug design.
Insights
This study investigates Primycin production in Saccharomonospora azurea, identifying key genes for optimizing antimicrobial drug development. Understanding these genetic factors aids in improving fermentation processes for enhanced antibiotic discovery.
Area of Science:
- Microbiology and Molecular Biology
- Drug Discovery and Development
Background:
- Emerging pathogens and antibiotic resistance necessitate new antimicrobial agents and deeper understanding of existing ones.
- Primycin, a macrolide lactone, is produced by Saccharomonospora azurea, but production varies between strains.
- Strain-dependent production requires investigation into the genetic basis of Primycin biosynthesis.
Purpose of the Study:
- To explore strain-dependent Primycin production in Saccharomonospora azurea.
- To conduct structural, functional, and comparative genomic analyses of Primycin production.
- To identify genetic targets for optimizing Primycin fermentation and strain improvement.
Main Methods:
- Comparative genomics and transcriptomic analysis of high- and low-Primycin producing strains.
- Identification and classification of differentially expressed genes (DEGs) using Cluster of Orthologous Groups (COGs).
- In silico data mining to identify key genes involved in Primycin biosynthesis and regulation.
Main Results:
- Transcriptomic analysis revealed 686 differentially expressed genes (DEGs) between high- and low-producing strains.
- Key DEGs identified include those involved in fatty acid synthesis, self-resistance, secondary metabolism regulation, and agmatinase activity.
- Agmatinase gene identified as crucial for catalyzing the conversion between guanidino/amino forms of Primycin.
Conclusions:
- Differential gene expression provides a basis for optimizing Primycin fermentation processes.
- Targeted strain improvement and rational drug design can be achieved by manipulating identified DEGs.
- This research offers a starting point for enhancing Primycin production for antimicrobial applications.
