Crystal structure of the DegS stress sensor: How a PDZ domain recognizes misfolded protein and activates a protease.
Wilken, C., Kitzing, K., Kurzbauer, R., Ehrmann, M., Clausen, T.(2004) Cell 117: 483-494
- PubMed: 15137941 
- DOI: 10.1016/s0092-8674(04)00454-4
- Primary Citation of Related Structures:  
1SOT, 1SOZ, 1VCW - PubMed Abstract: 
Gram-negative bacteria respond to misfolded proteins in the cell envelope with the sigmaE-driven expression of periplasmic proteases/chaperones. Activation of sigmaE is controlled by a proteolytic cascade that is initiated by the DegS protease. DegS senses misfolded protein in the periplasm, undergoes autoactivation, and cleaves the antisigma factor RseA ...