Yersinia enterocolitica Proteins YadA and Ail Bind Complement Regulator C4b-Binding Protein
Author Information
Author(s): Vesa Kirjavainen, Hanna Jarva, Marta Biedzka-Sarek, Anna M. Blom, Mikael Skurnik, Seppo Meri
Primary Institution: University of Helsinki
Hypothesis
The study aims to analyze how Yersinia enterocolitica inhibits the antibody-mediated classical pathway of complement activation.
Conclusion
Yersinia enterocolitica uses the proteins YadA and Ail to bind C4b-binding protein, helping it evade complement-mediated clearance in the human host.
Supporting Evidence
- Yersinia enterocolitica binds C4b-binding protein, which inhibits complement activation.
- Both YadA and Ail proteins are involved in the binding of C4b-binding protein.
- Binding of C4b-binding protein to Yersinia enterocolitica is functionally active and promotes degradation of C4b.
Takeaway
Yersinia enterocolitica has special proteins that help it hide from the body's defense system, making it harder for the body to fight off the infection.
Methodology
The study involved incubating Yersinia enterocolitica strains with radiolabeled C4b-binding protein and analyzing binding through various assays.
Digital Object Identifier (DOI)
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