Cited by 109Escherichia coli research studiesBiochemical and Structural CharacterizationBacterial Genetics and Biotechnology

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Self-associating autotransporters, SAATs: Functional and structural similarities

Klemm, Per, Vejborg, Rebecca Munk, Sherlock, Orla·2006·International Journal of Medical Microbiology

Abstract

The autotransporter family of translocated proteins in Gram-negative bacteria all contain three structural motifs, a signal sequence, a passenger domain and a translocator domain. The autotransporters constitute a highly versatile group of proteins with respect to function, which accords with the widespread presence of these proteins. The group encompasses many important virulence factors. In Escherichia coli, a subgroup of autotransporter proteins consists of the TibA adhesin/invasin associated with some enterotoxigenic E. coli, the AIDA adhesin from diarrhea-causing E. coli and finally, the Ag43 autoaggregation factor found in the majority of E. coli strains. The three proteins exhibit approximately 25% identity at the sequence level, and are quite different with respect to size, glycosylation and processing. Nevertheless, they share some important properties: all are self-associating proteins that cause bacterial aggregation. They can also interact with each other via heterologous interactions to cause formation of mixed bacterial aggregates. Furthermore, these proteins enhance biofilm formation. Based on these properties we propose to classify them together in a group termed SAATs: self-associating autotransporters.

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Crossref · 10.1016/j.ijmm.2005.10.002

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Metadata

Authors
Klemm, P., Vejborg, R. M., & Sherlock, O.
Affiliations
Technical University of Denmark (DK)
Corresponding author
Klemm, Per
Venue
International Journal of Medical Microbiology
Publisher
Elsevier BV
Published
2006-08
Volume
296
Issue
4-5
Pages
187-195
ISSN
1438-4221 (ISSN-L)
OpenAlex
W1982077771
Cited by
109
References
43
Citations by year
2026: 3 · 2025: 2 · 2024: 1 · 2023: 6 · 2022: 2 · 2021: 4 · 2020: 3 · 2019: 6 · 2018: 9 · 2017: 5 · 2016: 4 · 2015: 4 · 2014: 7 · 2013: 12 · 2012: 8
FWCI
0.61
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Medical Microbiology (publishedVersion)
  • PubMed (publishedVersion)
  • Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion)
Funders
Teknologi og Produktion, Det Frie Forskningsråd
Topics
  • Life Sciences › Immunology and Microbiology › Microbiology › Escherichia coli research studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Structural Characterization
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
autotransporters, Escherichia coli, bacterial adhesins, virulence factors, bacterial aggregation, biofilm formation, enterotoxigenic Escherichia coli, signal peptide, passenger domain, protein glycosylation, protein processing
MeSH terms
Bacterial Adhesion, Bacterial Outer Membrane Proteins, Biological Transport, Carrier Proteins, Escherichia coli, Gram-Negative Bacteria, Hydrogen-Ion Concentration, Fimbriae, Bacterial, Bacterial Capsules, Biofilms, Adhesins, Bacterial, Adhesins, Escherichia coli

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