Structure of Reovirus σ1 in Complex with Its Receptor JAM-A
Author Information
Author(s): Eva Kirchner, Kristen M. Guglielmi, Holger M. Strauss, Terence S. Dermody, Thilo Stehle
Primary Institution: Interfaculty Institute for Biochemistry, University of Tuebingen, Tuebingen, Germany
Hypothesis
How does the reovirus attachment protein σ1 interact with the receptor junctional adhesion molecule-A (JAM-A)?
Conclusion
The study reveals that reovirus σ1 binds to JAM-A with a much higher affinity than JAM-A binds to itself, indicating a mechanism for viral attachment.
Supporting Evidence
- Reovirus σ1 protein disrupts the JAM-A dimer, allowing for stronger binding.
- The dissociation constant (KD) of the σ1-JAM-A interaction is significantly lower than that of JAM-A homodimerization.
- Mutations in σ1 affect its ability to bind to JAM-A and reduce infectivity.
- Structural analysis provides insights into the mechanism of viral attachment.
Takeaway
Reovirus uses a special protein to stick to cells, which helps it infect them. This study shows how that protein works with a specific part of the cell.
Methodology
The researchers used crystallization and structural analysis to study the interaction between reovirus σ1 and JAM-A.
Limitations
The study primarily focuses on a specific strain of reovirus and may not fully represent other strains.
Statistical Information
P-Value
1.1×10−5
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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