Structural basis for mechanical force regulation of the adhesin FimH via finger trap-like beta sheet twisting.
Le Trong, I., Aprikian, P., Kidd, B.A., Forero-Shelton, M., Tchesnokova, V., Rajagopal, P., Rodriguez, V., Interlandi, G., Klevit, R., Vogel, V., Stenkamp, R.E., Sokurenko, E.V., Thomas, W.E.(2010) Cell 141: 645-655
- PubMed: 20478255 
- DOI: 10.1016/j.cell.2010.03.038
- Primary Citation of Related Structures:  
3JWN - PubMed Abstract: 
The Escherichia coli fimbrial adhesive protein, FimH, mediates shear-dependent binding to mannosylated surfaces via force-enhanced allosteric catch bonds, but the underlying structural mechanism was previously unknown. Here we present the crystal structure of FimH incorporated into the multiprotein fimbrial tip, where the anchoring (pilin) domain of FimH interacts with the mannose-binding (lectin) domain and causes a twist in the beta sandwich fold of the latter ...