Enterohaemorrhagic E. coli modulates an ARF6:Rab35 signalling axis to prevent recycling endosome maturation during infection
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Accepted version
Supporting information
Author(s)
Furniss, RCD
Slater, S
Frankel, G
Clements, A
Type
Journal Article
Abstract
Enteropathogenic and enterohaemorrhagic Escherichia coli (EPEC/EHEC) manipulate a plethora of host cell processes to establish infection of the gut mucosa. This manipulation is achieved via the injection of bacterial effector proteins into host cells using a Type III secretion system. We have previously reported that the conserved EHEC and EPEC effector EspG disrupts recycling endosome function, reducing cell surface levels of host receptors through accumulation of recycling cargo within the host cell. Here we report that EspG interacts specifically with the small GTPases ARF6 and Rab35 during infection. These interactions target EspG to endosomes and prevent Rab35-mediated recycling of cargo to the host cell surface. Furthermore, we show that EspG has no effect on Rab35-mediated uncoating of newly formed endosomes, and instead leads to the formation of enlarged EspG/TfR/Rab11 positive, EEA1/Clathrin negative stalled recycling structures. Thus, this paper provides a molecular framework to explain how EspG disrupts recycling whilst also reporting the first known simultaneous targeting of ARF6 and Rab35 by a bacterial pathogen.
Date Issued
2016-08-28
Date Acceptance
2016-05-20
Citation
Journal of Molecular Biology, 2016, 428 (17), pp.3399-3407
ISSN
1089-8638
Publisher
Elsevier
Start Page
3399
End Page
3407
Journal / Book Title
Journal of Molecular Biology
Volume
428
Issue
17
Copyright Statement
Creative Commons Attribution 4.0 International (CC BY 4.0)
License URL
Sponsor
Medical Research Council (MRC)
The Royal Society
Medical Research Council (MRC)
Identifier
https://www.sciencedirect.com/science/article/pii/S0022283616301929?via%3Dihub
Grant Number
MR/J006874/1B
RG130136
MR/K019007/1
Subjects
Science & Technology
Life Sciences & Biomedicine
Biochemistry & Molecular Biology
Type 3 secretion system, EspG
host-pathogen interactions
small GTPase signaling
endosomal recycling
cargo trafficking
ENTEROPATHOGENIC ESCHERICHIA-COLI
III EFFECTORS ESPG
RAB GTPASES
PROTEIN
ARF6
MICROTUBULES
PERTURBATION
TRAFFICKING
RECRUITMENT
DISRUPTS
Type 3 secretion system, EspG
cargo trafficking
endosomal recycling
host-pathogen interactions
small GTPase signaling
ADP-Ribosylation Factors
Endosomes
Enterohemorrhagic Escherichia coli
Escherichia coli Proteins
HeLa Cells
Host-Pathogen Interactions
Humans
Signal Transduction
rab GTP-Binding Proteins
Hela Cells
Endosomes
Humans
ADP-Ribosylation Factors
rab GTP-Binding Proteins
Escherichia coli Proteins
Signal Transduction
Enterohemorrhagic Escherichia coli
Host-Pathogen Interactions
0304 Medicinal and Biomolecular Chemistry
0601 Biochemistry and Cell Biology
0605 Microbiology
Biochemistry & Molecular Biology
Publication Status
Published
Date Publish Online
2016-05-31