type three secretion system
Bovine Colostrum Contains Immunoglobulin G Antibodies against Intimin, EspA, and EspB and Inhibits Hemolytic Activity Mediated by the Type Three Secretion System of Attaching and Effacing Escherichia coli
... EHEC is characterized by Shiga toxin expression from inte- grated bacteriophages and other virulence-associated traits (11, 12). Many of these traits are encoded by the chromosomal pathogenicity island called the locus ...
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The Impact of ExoS on Pseudomonas aeruginosa Internalization by Epithelial Cells Is Independent of fleQ and Correlates with Bistability of Type Three Secretion System Gene Expression
... ABSTRACT Pseudomonas aeruginosa is internalized into multiple types of epithelial cell in vitro and in vivo and yet is often regarded as an exclusively extracellular pathogen. Paradoxically, ExoS, a type ...
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The Aeromonas salmonicida subsp. salmonicida exoproteome: determination of the complete repertoire of Type-Three Secretion System effectors and identification of other virulence factors
... the type three secretion system (T3SS) encoded on a large plasmid and described for the first time in the Aeromonas genus in our laboratory ten years ago [2,3]; the surface layer protein VapA ...
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LcrH, a Class II Chaperone from the Type Three Secretion System, Has a Highly Flexible Native Structure
... The type three secretion system is a large and complex protein nano-machine that many Gram-negative pathogens employ to infect host ...effective secretion and thus pore formation of the ...
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SsaV Interacts with SsaL to Control the Translocon to Effector Switch in the Salmonella SPI 2 Type Three Secretion System
... Random mutagenesis of ssaV to screen for enhanced secretion of SseJ. Plasmid pssaV was used to randomly mutagenize the ssaV gene by using a GeneMorph II EZClone domain mutagenesis kit (Agilent Technologies) ...
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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 architecture of EssB, an integral membrane component of the Type VII secretion system
... The extracellular segment dimer observed in the structure of EssB-C D is retained, as previously detailed, and embedded in the membrane by a predicted transmembrane helix. Based on secondary structure predictions and ...
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Structural insights into the function of type VI secretion system TssA subunits.
... Bioinformatic and proteolytic analysis of TssA family proteins. Bioinformatic analysis suggests that all TssA subunits contain an N-terminal conserved region of ~120 amino acids (ImpA_N) composed of three shorter ...
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Secretome Analysis of Vibrio cholerae Type VI Secretion System Reveals a New Effector Immunity Pair
... into three groups: cell wall- degrading enzymes, membrane-targeting proteins, and nucleases ...the secretion of nucleases RhsA and RhsB by Dickeya dadantii is dependent on T6SS and the VgrG-3 protein, and ...
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A Novel Mechanism for Protein Delivery by the Type 3 Secretion System for Extracellularly Secreted Proteins
... Three proteins (one hydrophilic protein and two hydrophobic proteins) known as translocators are themselves secreted via the T3SS and are required for the transit across the host cell membrane (11). However, the ...
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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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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 ...
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EspZ of Enteropathogenic and Enterohemorrhagic Escherichia coli Regulates Type III Secretion System Protein Translocation
... HeLa-EspZ cells or HeLa cells expressing Myc-tagged green fluorescent protein (HeLa-GFP) were then infected for 1 h with wild-type E2348/69, E2348/69 ⌬ espZ, or the complemented mu- tant. DNA staining revealed ...
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Inflammasome Activation in Response to the Yersinia Type III Secretion System Requires Hyperinjection of Translocon Proteins YopB and YopD
... of three independent experiments with 3 replicates per treatment per ...of three independent experiments with 3 replicates per treatment per ...of three independent experiments with 3 replicates per ...
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The Tip of the VgrG Spike Is Essential to Functional Type VI Secretion System Assembly in Acinetobacter baumannii
... Clinical strain AbCAN2 encodes a T6SS locus. AbCAN2 is a coccygeal isolate collected at the University of Alberta Hospital, Canada, with an inactive T6SS under standard laboratory conditions (39). To gain a better ...
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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
... Roles of membrane trafficking pathways in YopB/D pore for- mation. Intracellular membrane trafficking proteins, encompass- ing the intracellular protein transport, protein transport, and transport categories, were ...
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Postreplication Roles of the Brucella VirB Type IV Secretion System Uncovered via Conditional Expression of the VirB11 ATPase
... from three independent biological replicates, each measured in duplicate, were normalized to gDNA levels and cali- brated according to the threshold cycle (2 ⫺⌬CT ) method ...
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Enterococcus faecalis Enhances Expression and Activity of the Enterohemorrhagic Escherichia coli Type III Secretion System
... EspB is cleaved by the E. faecalis protease GelE. Because of the disconnect between the increased transcription of the LEE and the undetectable EspB protein levels in EHEC and E. faecalis cocultures, we hypothesized that ...
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Molecular and Structural Analysis of the Helicobacter pylori cag Type IV Secretion System Core Complex
... from three strains producing HA-tagged CagF using a monoclonal HA antibody and of a control preparation from an un- tagged WT strain that was processed in ...
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Structural Basis of Type 2 Secretion System Engagement between the Inner and Outer Bacterial Membranes
... The three-dimensional (3D) reconstruction of the XcpQ oligomer was performed under a strict cyclic-15-fold (C15) ...wherein three N domains are displaced away from the XcpP structure to create a metastable ...
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