Protein engineering of Saccharomyces cerevisiae transporter Pdr5p identifies key residues that impact Fusarium mycotoxin export and resistance to inhibition
| العنوان: | Protein engineering of Saccharomyces cerevisiae transporter Pdr5p identifies key residues that impact Fusarium mycotoxin export and resistance to inhibition |
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| المؤلفون: | Douglas A. Johnson, Linda J. Harris, Steve Gleddie, Whynn Bosnich, Amanda B. Gunter, Anne Hermans |
| المصدر: | MicrobiologyOpen MicrobiologyOpen, Vol 5, Iss 6, Pp 979-991 (2016) |
| بيانات النشر: | Wiley, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Fusarium, Food Safety, Saccharomyces cerevisiae Proteins, Drug export, Saccharomyces cerevisiae, Trichothecene, deoxynivalenol, ATP-binding cassette transporter, Drug resistance, yeast, Biology, Protein Engineering, 01 natural sciences, Microbiology, 03 medical and health sciences, chemistry.chemical_compound, enniatin, Mycotoxin, Plant Diseases, Original Research, drug resistance, food and beverages, biology.organism_classification, QR1-502, Yeast, Protein Transport, Fusarium graminearum, 030104 developmental biology, Amino Acid Substitution, ABC transporters, chemistry, ATP-Binding Cassette Transporters, Edible Grain, Trichothecenes, 010606 plant biology & botany |
| الوصف: | Cereal infection by the broad host range fungal pathogen Fusarium graminearum is a significant global agricultural and food safety issue due to the deposition of mycotoxins within infected grains. Methods to study the intracellular effects of mycotoxins often use the baker's yeast model system (Saccharomyces cerevisiae); however, this organism has an efficient drug export network known as the pleiotropic drug resistance (PDR) network, which consists of a family of multidrug exporters. This study describes the first study that has evaluated the potential involvement of all known or putative ATP‐binding cassette (ABC) transporters from the PDR network in exporting the F. graminearum trichothecene mycotoxins deoxynivalenol (DON) and 15‐acetyl‐deoxynivalenol (15A‐DON) from living yeast cells. We found that Pdr5p appears to be the only transporter from the PDR network capable of exporting these mycotoxins. We engineered mutants of Pdr5p at two sites previously identified as important in determining substrate specificity and inhibitor susceptibility. These results indicate that it is possible to alter inhibitor insensitivity while maintaining the ability of Pdr5p to export the mycotoxins DON and 15A‐DON, which may enable the development of resistance strategies to generate more Fusarium‐tolerant crop plants. |
| تدمد: | 2045-8827 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d18a43fbcf7046b37e343d000d878890Test https://doi.org/10.1002/mbo3.381Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....d18a43fbcf7046b37e343d000d878890 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20458827 |
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