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Hou B, Wang R, Zou J, Zhang F, Wu H, Ye J, Zhang H. A putative redox‐sensing regulator Rex regulates lincomycin biosynthesis in Streptomyces lincolnensis. J Basic Microbiol 2021; 61:772-781. [DOI: doi.org/10.1002/jobm.202100249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 07/04/2021] [Indexed: 10/09/2023]
Abstract
AbstractLincomycin is an important antimicrobial agent which is widely used in clinical and animal husbandry. The biosynthetic pathway of lincomycin comes to light in the past 10 years, however, the regulatory mechanism is still unclear. In this study, a redox‐sensing regulator Rex from Streptomyces lincolnensis (Rexlin) was identified and characterized to affect cell growth and lincomycin biosynthesis. Disruption of rex resulted in an increase in cell growth, but a decrease in lincomycin production. The results of quantitative real‐time polymerase chain reaction showed that Rexlin can promote transcription of the regulatory gene lmbU and the structural genes lmbA, lmbC, lmbJ, lmbV, and lmbW. However, electrophoretic mobility shift assay analysis demonstrated that Rexlin can not bind to the promoter regions of these genes above. Findings in this study broadened our horizons in the regulatory mechanism of lincomycin production and laid a foundation for strain improvement of antibiotic producers.
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Affiliation(s)
- Bingbing Hou
- State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai China
- Department of Applied Biology East China University of Science and Technology Shanghai China
| | - Ruida Wang
- State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai China
- Department of Applied Biology East China University of Science and Technology Shanghai China
| | - Jingyun Zou
- State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai China
- Department of Applied Biology East China University of Science and Technology Shanghai China
| | - Feixue Zhang
- State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai China
- Department of Applied Biology East China University of Science and Technology Shanghai China
| | - Haizhen Wu
- State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai China
- Department of Applied Biology East China University of Science and Technology Shanghai China
| | - Jiang Ye
- State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai China
- Department of Applied Biology East China University of Science and Technology Shanghai China
| | - Huizhan Zhang
- State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai China
- Department of Applied Biology East China University of Science and Technology Shanghai China
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Hou B, Wang R, Zou J, Zhang F, Wu H, Ye J, Zhang H. A putative redox-sensing regulator Rex regulates lincomycin biosynthesis in Streptomyces lincolnensis. J Basic Microbiol 2021; 61:772-781. [PMID: 34313330 DOI: 10.1002/jobm.202100249] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/17/2021] [Accepted: 07/04/2021] [Indexed: 01/06/2023]
Abstract
Lincomycin is an important antimicrobial agent which is widely used in clinical and animal husbandry. The biosynthetic pathway of lincomycin comes to light in the past 10 years, however, the regulatory mechanism is still unclear. In this study, a redox-sensing regulator Rex from Streptomyces lincolnensis (Rexlin ) was identified and characterized to affect cell growth and lincomycin biosynthesis. Disruption of rex resulted in an increase in cell growth, but a decrease in lincomycin production. The results of quantitative real-time polymerase chain reaction showed that Rexlin can promote transcription of the regulatory gene lmbU and the structural genes lmbA, lmbC, lmbJ, lmbV, and lmbW. However, electrophoretic mobility shift assay analysis demonstrated that Rexlin can not bind to the promoter regions of these genes above. Findings in this study broadened our horizons in the regulatory mechanism of lincomycin production and laid a foundation for strain improvement of antibiotic producers.
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Affiliation(s)
- Bingbing Hou
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China.,Department of Applied Biology, East China University of Science and Technology, Shanghai, China
| | - Ruida Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China.,Department of Applied Biology, East China University of Science and Technology, Shanghai, China
| | - Jingyun Zou
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China.,Department of Applied Biology, East China University of Science and Technology, Shanghai, China
| | - Feixue Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China.,Department of Applied Biology, East China University of Science and Technology, Shanghai, China
| | - Haizhen Wu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China.,Department of Applied Biology, East China University of Science and Technology, Shanghai, China
| | - Jiang Ye
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China.,Department of Applied Biology, East China University of Science and Technology, Shanghai, China
| | - Huizhan Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China.,Department of Applied Biology, East China University of Science and Technology, Shanghai, China
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