New Biotransformation Mode of Zearalenone Identified in Bacillus subtilis Y816 Revealing a Novel ZEN Conjugate
| Autor: | Shi Bin Yang, Jianyong Xu, Xiang Ming Li, Xing Ya Zhao, Hong Chen Zheng, Hui Song, Yan He Ma, Wen Ju Shu |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
biology fungi 010401 analytical chemistry Bacillus General Chemistry Bacillus subtilis biology.organism_classification 01 natural sciences Yeast 0104 chemical sciences Phosphotransferase chemistry.chemical_compound Transformation (genetics) Biochemistry Biotransformation chemistry Fermentation General Agricultural and Biological Sciences Zearalenone 010606 plant biology & botany |
| Zdroj: | Journal of Agricultural and Food Chemistry. 69:7409-7419 |
| ISSN: | 1520-5118 0021-8561 |
| DOI: | 10.1021/acs.jafc.1c01817 |
| Popis: | An increasing number of Bacillus strains have been identified, and the removal capacity of zearalenone (ZEN) was determined; however, they failed to reveal the detoxification mechanism and transformation product. Here, Bacillus subtilis Y816, which could transform 40 mg/L of ZEN within 7 h of fermentation, was identified and studied. First, the biotransformation products of ZEN and 17-β-estradiol (E2) were identified as ZEN-14-phosphate and E2-3-phosphate by HPLC-TOF-MS and NMR, respectively. An intracellular zearalenone phosphotransferase (ZPH) was found through transcriptome sequencing analysis of B. subtilis Y816. The phosphorylated reaction conditions of ZEN by ZPH were further revealed in this work. Furthermore, the phosphorylated conjugates showed reduced estrogenic toxicity compared with their original substances (ZEN and α/β-zearalenol) using an engineered yeast biosensor system. The first report on the phosphorylated conjugated mode of ZEN in B. subtilis Y816 will inspire new perspectives on the biotransformation of ZEN in Bacillus strains. |
| Databáze: | OpenAIRE |
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