Comparative Phenotypic, Proteomic, and Phosphoproteomic Analysis Reveals Different Roles of Serine/Threonine Phosphatase and Kinase in the Growth, Cell Division, and Pathogenicity of Streptococcus suis
文献类型: 外文期刊
作者: Hu, Qiao 1 ; Yao, Lun 1 ; Liao, Xia 1 ; Zhang, Liang-Sheng 1 ; Li, Hao-Tian 1 ; Li, Ting-Ting 1 ; Jiang, Qing-Gen 1 ; Tan, Mei-Fang 2 ; Li, Lu 1 ; Draheim, Roger R. 5 ; Huang, Qi 1 ; Zhou, Rui 1 ;
作者机构: 1.Huazhong Agr Univ, Coll Vet Med, State Key Lab Agr Microbiol, Wuhan 430070, Peoples R China
2.Jiangxi Acad Agr Sci, Inst Anim Husb & Vet Sci, Nanchang 330200, Peoples R China
3.Cooperat Innovat Ctr Sustainable Pig Prod, Wuhan 430070, Peoples R China
4.Minist Sci & Technol China, Int Res Ctr Anim Dis, Wuhan 430070, Peoples R China
5.Univ Portsmouth, Sch Pharm & Biomed Sci, Portsmouth PO1 2UP, Hants, England
关键词: Streptococcus suis; serine; threonine phosphatase; threonine kinase; coordinated regulation; growth; cell division; pathogenicity
期刊名称:MICROORGANISMS ( 影响因子:4.926; 五年影响因子:5.143 )
ISSN:
年卷期: 2021 年 9 卷 12 期
页码:
收录情况: SCI
摘要: Eukaryote-like serine/threonine kinases (STKs) and cognate phosphatases (STPs) comprise an important regulatory system in many bacterial pathogens. The complexity of this regulatory system has not been fully understood due to the presence of multiple STKs/STPs in many bacteria and their multiple substrates involved in many different physiological and pathogenetic processes. Streptococci are the best materials for the study due to a single copy of the gene encoding STK and its cognate STP. Although several studies have been done to investigate the roles of STK and STP in zoonotic Streptococcus suis, respectively, few studies were performed on the coordinated regulatory roles of this system. In this study, we carried out a systemic study on STK/STP in S. suis by using a comparative phenotypic, proteomic, and phosphoproteomic analysis. Mouse infection assays revealed that STK played a much more important role in S. suis pathogenesis than STP. The increment stk and increment stp increment stk strains, but not increment stp, showed severe growth retardation. Moreover, both increment stp and increment stk strains displayed defects in cell division, but they were abnormal in different ways. The comparative proteomics and phosphoproteomics revealed that deletion of stk or stp had a significant influence on protein expression. Interestingly, more virulence factors were found to be downregulated in increment stk than increment stp. In increment stk strain, a substantial number of the proteins with a reduced phosphorylation level were involved in cell division, energy metabolism, and protein translation. However, only a few proteins showed increased phosphorylation in increment stp, which also included some proteins related to cell division. Collectively, our results show that both STP and STK are critical regulatory proteins for S. suis and that STK seems to play more important roles in growth, cell division, and pathogenesis.
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