PMID- 28401683 OWN - NLM STAT- MEDLINE DCOM- 20180221 LR - 20181202 IS - 1462-2920 (Electronic) IS - 1462-2912 (Linking) VI - 19 IP - 10 DP - 2017 Oct TI - A global survey of bacterial type III secretion systems and their effectors. PG - 3879-3895 LID - 10.1111/1462-2920.13755 [doi] AB - The type III secretion system (T3SS) is an important genetic determinant that mediates interactions between Gram-negative bacteria and their eukaryotic hosts. Our understanding of the T3SS continues to expand, yet the availability of new bacterial genomes prompts questions about its diversity, distribution and evolution. Through a comprehensive survey of approximately 20 000 bacterial genomes, we identified 174 non-redundant T3SSs from 109 genera and 5 phyla. Many of the bacteria are environmental strains that have not been reported to interact with eukaryotic hosts, while several species groups carry multiple T3SSs. Four ultra-conserved Microsynteny Blocks (MSBs) were defined within the T3SSs, facilitating comprehensive clustering of the T3SSs into 13 major categories, and establishing the largest diversity of T3SSs to date. We subsequently extended our search to identify type III effectors, resulting in 8740 candidate effectors. Lastly, an analysis of the key transcriptional regulators and circuits for the T3SS families revealed that low-level T3SS regulators were more conserved than higher-level regulators. This comprehensive analysis of the T3SSs and their protein effectors provides new insight into the diversity of systems used to facilitate host-bacterial interactions. CI - (c) 2017 Society for Applied Microbiology and John Wiley & Sons Ltd. FAU - Hu, Yueming AU - Hu Y AD - Department of Cell Biology and Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen, 518060, P.R. China. FAU - Huang, He AU - Huang H AD - MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China. FAU - Cheng, Xi AU - Cheng X AD - Department of Cell Biology and Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen, 518060, P.R. China. FAU - Shu, Xingsheng AU - Shu X AD - Department of Cell Biology and Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen, 518060, P.R. China. FAU - White, Aaron P AU - White AP AD - Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, SK, Canada. FAU - Stavrinides, John AU - Stavrinides J AD - Department of Biology, University of Regina, Regina, SK, Canada. FAU - Koster, Wolfgang AU - Koster W AD - Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, SK, Canada. FAU - Zhu, Guoqiang AU - Zhu G AD - College of Veterinary Medicine, Yangzhou University, Yangzhou, China. FAU - Zhao, Zhendong AU - Zhao Z AD - MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China. FAU - Wang, Yejun AU - Wang Y AD - Department of Cell Biology and Genetics, School of Basic Medical Sciences, Shenzhen University Health Science Center, Shenzhen, 518060, P.R. China. LA - eng PT - Journal Article DEP - 20170510 PL - England TA - Environ Microbiol JT - Environmental microbiology JID - 100883692 RN - 0 (Bacterial Proteins) RN - 0 (Type III Secretion Systems) SB - IM MH - Bacterial Proteins/genetics/metabolism MH - Genome, Bacterial/genetics MH - Gram-Negative Bacteria/genetics/*metabolism MH - Host-Pathogen Interactions/physiology MH - Proteobacteria/genetics/*metabolism MH - Type III Secretion Systems/genetics/*metabolism EDAT- 2017/04/13 06:00 MHDA- 2018/02/22 06:00 CRDT- 2017/04/13 06:00 PHST- 2016/08/24 00:00 [received] PHST- 2017/04/04 00:00 [accepted] PHST- 2017/04/13 06:00 [pubmed] PHST- 2018/02/22 06:00 [medline] PHST- 2017/04/13 06:00 [entrez] AID - 10.1111/1462-2920.13755 [doi] PST - ppublish SO - Environ Microbiol. 2017 Oct;19(10):3879-3895. doi: 10.1111/1462-2920.13755. Epub 2017 May 10.