Structural basis for inhibition of complement C5 by the SSL7 protein from Staphylococcus aureus
Laursen, N.S., Gordon, N., Hermans, S., Lorenz, N., Jackson, N., Wines, B., Spillner, E., Christensen, J.B., Jensen, M., Fredslund, F., Bjerre, M., Sottrup-Jensen, L., Fraser, J.D., Andersen, G.R.(2010) Proc Natl Acad Sci U S A 107: 3681-3686
- PubMed: 20133685 
- DOI: 10.1073/pnas.0910565107
- Primary Citation of Related Structures:  
3KLS, 3KM9 - PubMed Abstract: 
Staphylococcus aureus secretes the SSL7 protein as part of its immune evasion strategy. The protein binds both complement C5 and IgA, yet it is unclear whether SSL7 cross-links these two proteins and, if so, what purpose this serves the pathogen. We have isolated a stable IgA-SSL7-C5 complex, and our crystal structure of the C5-SSL7 complex confirms that binding to C5 occurs exclusively through the C-terminal beta-grasp domain of SSL7 leaving the OB domain free to interact with IgA ...