Type 4 Secretion System
TIFA Signaling in Gastric Epithelial Cells Initiates the cag Type 4 Secretion System Dependent Innate Immune Response to Helicobacter pylori Infection
... mune system to bacterial ...cag type 4 secretion system (cag-T4SS) has long been appreci- ated as the major mechanism by which gastric epithelial cells detect ...
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Translocation through the conjugative Type 4 secretion system requires unfolding of its protein substrate
... Conjugation efficiency of cells carrying R388 plasmid encoding modified TrwC as.. Values represent the mean ± SEM of three experiments.[r] ...
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Engineering the flagellar type III secretion system: improving capacity for secretion of recombinant protein
... based, secretion assay (Fig. 4) enabled us to screen a range of engineered strains and secretion signal constructs ...III) secretion strain ...on secretion through the FT3SS ...improved ...
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Structural Basis of Type 2 Secretion System Engagement between the Inner and Outer Bacterial Membranes
... inner membrane protein complex that functions as an assembly platform and ATP- dependent motor, and from this platform, the pili are driven into a cavernous secretin complex embedded in the outer membrane that spans the ...
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Self Labeling Enzyme Tags for Analyses of Translocation of Type III Secretion System Effector Proteins
... SRM has been recently applied to the study of the T3SS translocon assembly during infection by Y. enterocolitica (17) and to analysis of the distribution of SPI2-T3SS effector protein SseJ in STM-infected cells (18). Due ...
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EspZ of Enteropathogenic and Enterohemorrhagic Escherichia coli Regulates Type III Secretion System Protein Translocation
... EPEC and enterohemorrhagic E. coli (EHEC) are important human pathogens. While EPEC strains cause bacterial pediatric diarrhea and mortality in developing countries (8), EHEC strains, particularly those belonging to ...
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Engineering the flagellar type III secretion system: improving capacity for secretion of recombinant protein.
... the secretion construct incorporated FLAG tag ...luorimetric secretion assay, based on cleavage of 4-methylumbelliferyl butyrate (MUB) by cutinase to yield a luorescent 4-methylumbelliferone ...
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Structural insights into the function of type VI secretion system TssA subunits.
... at 4 °C to allow for precipitation, the mixture was centrifuged at 7000 × g for 30 s, and the supernatant was removed (unbound ...at 4 °C between each wash followed by centrifugation at 7000 × g for 30 ...
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Control of Type III Secretion System Effector/Chaperone Ratio Fosters Pathogen Adaptation to Host Adherent Lifestyle
... the type 4 bundle-forming pilus (BFP), which promotes microcolony formation and host attachment (6, 19–21), and LEE4, encoding espA, espB, and espD (22), which are essential for injection of effector ...
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Enterococcus faecalis Enhances Expression and Activity of the Enterohemorrhagic Escherichia coli Type III Secretion System
... for 4 h to late log phase when EHEC CFU counts were comparable between ...detection system, and data were collected using ABI Sequence Detection, version ...
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Dynamics of the Type III Secretion System Activity of Enteropathogenic Escherichia coli
... Tir absence has divergent effects on the translocation of ef- fectors. Tir is inserted into the host cell membrane shortly after translocation, forming a binding site for the EPEC outer mem- brane protein intimin and ...
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The Ruler Protein EscP of the Enteropathogenic Escherichia coli Type III Secretion System Is Involved in Calcium Sensing and Secretion Hierarchy Regulation by Interacting with the Gatekeeper Protein SepL
... We then used a co-IP assay to investigate the ability of the three proteins to form a protein complex. Bacterial lysates con- taining EscP-Flag were subjected to immunoprecipitation with anti-Flag antibody, and the beads ...
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Genetic Dissection of the Type VI Secretion System in Acinetobacter and Identification of a Novel Peptidoglycan Hydrolase, TagX, Required for Its Biogenesis
... the secretion of effectors encoded downstream or have effector functions in extended C-terminal domains (16, 18, ...the secretion of cog- nate effectors ...several type VI lipase effectors (Tle) have ...
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The architecture of EssB, an integral membrane component of the Type VII secretion system
... Preparation of the membrane-bound EssB and EssB D followed the same protocol except that LEMO21(DE3) cells (Wagner et al., 2008) were used, the culture medium contained 100 mM L-rhamnose, and gene expression was induced ...
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Inflammasome Activation in Response to the Yersinia Type III Secretion System Requires Hyperinjection of Translocon Proteins YopB and YopD
... on glass coverslips in 24-well plates overnight. Two hours prior to infec- tion, cells were treated with Z-YVAD-FMK (R&D Systems) to a final concentration of 20 M. BMDMs were then infected with an MOI of 5 for 2 h. ...
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Secretome Analysis of Vibrio cholerae Type VI Secretion System Reveals a New Effector Immunity Pair
... removed, and supernatant was filtered through 0.22- m-pore-size filters. Protease inhibitors were added to filtrates to inhibit protein degradation. OMVs were removed by ultracentrifugation (130,000 ⫻ g for 4 h ...
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Extracellular secretion of a recombinant therapeutic peptide by Bacillus halodurans utilizing a modified flagellin type III secretion system
... Our system utilizes an endogenous promoter and there- fore no inducers need to be added to the ...determine secretion levels obtained from either the Salmonella or ...flagellar type III ...coli ...
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Topological Analysis of the Type 3 Secretion System Translocon Pore Protein IpaC following Its Native Delivery to the Plasma Membrane during Infection
... To explore whether the observed functional differences between IpaC and SipC were associated with differences in protein topology in the plasma membrane, we compared the accessibility of SipC residues with that of IpaC ...
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Migration of Type III Secretion System Transcriptional Regulators Links Gene Expression to Secretion
... wild type or ΔhrpG, ΔhrpV, and ΔhrpJ knockout ...a secretion-incompetent ΔhrcC ...HrpA2 secretion (see ...of type III secretion), the accumulated HrpA2 may be exported via an ...
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Identification of Mammalian Proteins That Collaborate with Type III Secretion System Function: Involvement of a Chemokine Receptor in Supporting Translocon Activity
... (Fig. 4), cells expressing an shRNA against Rock2 exhib- ited an approximately 70% reduction in YopH-TEM transloca- tion compared to cells expressing the shRNA vector control ...
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