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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yin, Xiaojuan Xu, Xinqiang Wu, Hang Yuan, Li Huang, Xunduan Zhang, Buchang |
| Copyright Year | 2013 |
| Abstract | Saccharopolyspora erythraea, a mycelium-forming actinomycete, produces a clinically important antibiotic erythromycin. Extensive investigations have provided insights into erythromycin biosynthesis in S. erythraea, but knowledge of its morphogenesis remains limited. By gene inactivation and complementation strategies, the TetR-family transcriptional regulator SACE_0012 was identified to be a negative regulator of mycelium formation of S. erythraea A226. Detected by quantitative real-time PCR, the relative transcription of SACE_7115, the amfC homolog for an aerial mycelium formation protein, was dramatically increased in SACE_0012 mutant, whereas erythromycin biosynthetic gene eryA, a pleiotropic regulatory gene bldD, and the genes SACE_2141, SACE_6464, SACE_6040, that are the homologs to the sporulation regulators WhiA, WhiB, WhiG, were not differentially expressed. SACE_0012 disruption could not restore its defect of aerial development in bldD mutant, and also did not further accelerate the mycelium formation in the mutant of SACE_7040 gene, that was previously identified to be a morphogenesis repressor. Furthermore, the transcriptional level of SACE_0012 had not markedly changed in bldD and SACE_7040 mutant over A226. Taken together, these results suggest that SACE_0012 is a negative regulator of S. erythraea morphogenesis by mainly increasing the transcription of amfC gene, independently of the BldD regulatory system. |
| Starting Page | 647 |
| Ending Page | 651 |
| Page Count | 5 |
| File Format | |
| ISSN | 03438651 |
| Journal | Current Microbiology |
| Volume Number | 67 |
| Issue Number | 6 |
| e-ISSN | 14320991 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2013-06-23 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Microbiology Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Microbiology Applied Microbiology and Biotechnology |
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