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The site of benzyl penicillin accumulation in Penicillium chrysogenum
Abstract:
Benzyl penicillin was localized in cells of Penicillium chrysogenum by means of enzymatical and immunological methods, enabling the determination of minute amounts of penicillin. The reactions were performed on ultrathin sections. They allow to determine the antibiotic inside of the cells. The results indicate that benzyl penicillin is present in the vesicles belonging to the Golgi apparatus. Benzyl penicillin is transported from the cytoplasm outside the cell membrane by the Golgi vesicles.
Insights
Benzyl penicillin, an antibiotic, is found within the Golgi apparatus vesicles of Penicillium chrysogenum. These vesicles transport the penicillin from the cytoplasm out of the cell.
Area of Science:
- Microbiology
- Cell Biology
- Biochemistry
Background:
- Penicillium chrysogenum is a key industrial fungus for producing penicillin.
- Understanding the cellular localization and transport of penicillin is crucial for optimizing production.
Purpose of the Study:
- To determine the intracellular site of benzyl penicillin synthesis and accumulation in Penicillium chrysogenum.
- To elucidate the transport mechanism of benzyl penicillin within the fungal cell.
Main Methods:
- Enzymatical and immunological methods were employed for penicillin localization.
- Analysis was performed on ultrathin sections of Penicillium chrysogenum cells.
Main Results:
- Benzyl penicillin was successfully localized within the cells of Penicillium chrysogenum.
- Minute amounts of penicillin could be quantified using the developed methods.
- Benzyl penicillin was identified within vesicles of the Golgi apparatus.
- Evidence suggests Golgi vesicles mediate penicillin transport from the cytoplasm to the exterior.
Conclusions:
- The Golgi apparatus plays a significant role in the intracellular transport of benzyl penicillin in Penicillium chrysogenum.
- This study provides insights into the subcellular pathway of penicillin secretion.