Pseudomonas Effector Translocation
Pseudomonas Effector Translocation - Related Videos
12:23
Analysis of Yersinia enterocolitica Effector Translocation into Host Cells Using Beta-lactamase Effector Fusions
0 Views •
Cited by 5 •
2015
Effector translocation into host cells via a type III secretion system is a common virulence strategy among gram-negative bacteria. A beta-lactamase effector fusion based assay for quantitative analysis of translocation was applied. In Yersinia infected cells, conversion of a FRET reporter by the beta-lactamase is monitored using laser scanning microscopy.
02:20
Monitoring Bacterial Infection and Effector Protein Delivery in Plant Cells
0 Views •
2025
Source: Lee, H. et. al., Split Green Fluorescent Protein System to Visualize Effectors Delivered from Bacteria During Infection. J. Vis. Exp. (2018)This video demonstrates a method for monitoring bacterial infection and effector protein delivery in plant cells using split superfolder green fluorescent protein (sfGFP) complementation combined with confocal microscopy. The approach enables precise visualization of effector translocation into the host cell cytosol.
10:29
Applying Fluorescence Resonance Energy Transfer (FRET) to Examine Effector Translocation Efficiency by Coxiella burnetii during siRNA Silencing
0 Views •
Cited by 15 •
2016
Investigating the interactions between bacterial pathogens and their hosts is an important area of biological research. Here, we describe the necessary techniques to measure effector translocation by Coxiella burnetii during siRNA gene silencing using BlaM substrate.
12:27
Measuring Peptide Translocation into Large Unilamellar Vesicles
0 Views •
Cited by 9 •
2012
This protocol details a method for the quantitative measure of peptide translocation into large unilamellar lipid vesicles. This method also provides information about the rate of membrane translocation and can be used to identify peptides that efficiently and spontaneously cross lipid bilayers.
03:03
Measuring the Activation of Fc-Mediated Effector Functions by HA Antibodies
0 Views •
2025
This video demonstrates an assay measuring the antibody-mediated activation of T cell effector functions. Adding an influenza virus hemagglutinin (HA)-specific monoclonal antibody to transfected mammalian cells expressing HA results in the formation of immune complexes with HA. Upon introducing engineered T cells expressing Fc receptors and a luciferase reporter, the T cells are activated by the antibody-HA complexes, and this activation is detected by adding a luciferase substrate and...
FAQs
Selection depends on the secretion apparatus recognizing bacterial effector proteins before transport begins. This recognition links the correct protein cargo to the specialized machinery, helping ensure that effectors are directed across the bacterial and host membranes rather than released nonspecifically. The process is therefore central to delivering virulence-associated activities to the appropriate target cell.
Crossing both membrane barriers allows an effector to move from the bacterial interior into the host-cell environment where it can act. The specialized apparatus coordinates this passage, making membrane translocation a key mechanistic step rather than a simple release event. Successful transport determines whether the delivered protein can influence host signaling, cytoskeletal behavior, or immune responses.
Once inside a target cell, effectors may modify signaling pathways, cytoskeletal dynamics, or immune responses. These changes can reshape how the cell communicates, maintains its internal structure, or reacts to infection. Examining the particular host function affected helps researchers connect a delivered effector with changes in cellular behavior and with the eventual outcome of infection.
Investigating the delivery process connects bacterial virulence factors with specific changes in host cells. Researchers can ask whether altered signaling, cytoskeletal dynamics, or immune responses favor bacterial establishment or support host resistance. This framework helps explain why translocation is relevant to disease mechanisms and identifies stages of host-pathogen interaction that may be important for antimicrobial research.
Studies can focus on how bacterial effectors are recognized, how the secretion apparatus moves them across membranes, and how host cells respond after entry. These questions place the mechanism within broader host-pathogen interaction research. The resulting information can support analysis of virulence factors and improve understanding of how pathogens establish disease or how hosts detect infection.
The mechanism offers two complementary research directions. Because translocation supports pathogenic effects, understanding its components and steps may reveal targets for antimicrobial strategies. At the same time, the ability of the apparatus to deliver proteins into host cells provides a basis for studying engineered protein delivery systems. These applications extend the topic beyond infection biology into tool development.