2j70

Structural and functional characterisation of partner-switching regulating the environmental stress response in B. subtilis

spinqualitylabelsall models 2j70, resolution 1.95Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2j70 is a 1 chain structure with sequence from Bacillus subtilis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.95Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function RSBU_BACSU Positive regulator of sigma-B activity. Dephosphorylates RsbV in response to environmental stress conveyed from the RsbXST module. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The general stress response of Bacillus subtilis and close relatives provides the cell with protection from a variety of stresses. The upstream component of the environmental stress signal transduction cascade is activated by the RsbT kinase that switches binding partners from a 25 S macromolecular complex, the stressosome, to the RsbU phosphatase. Once the RsbU phosphatase is activated by interacting with RsbT, the alternative sigma factor, sigmaB, directs transcription of the general stress regulon. Previously, we demonstrated that the N-terminal domain of RsbU mediates the binding of RsbT. We now describe residues in N-RsbU that are crucial to this interaction by experimentation both in vitro and in vivo. Furthermore, crystal structures of the N-RsbU mutants provide a molecular explanation for the loss of interaction. Finally, we also characterize mutants in RsbT that affect binding to both RsbU and a simplified, binary model of the stressosome and thus identify overlapping binding surfaces on the RsbT "switch." Structural and functional characterization of partner switching regulating the environmental stress response in Bacillus subtilis.,Hardwick SW, Pane-Farre J, Delumeau O, Marles-Wright J, Murray JW, Hecker M, Lewis RJ J Biol Chem. 2007 Apr 13;282(15):11562-72. Epub 2007 Feb 15. PMID:17303566 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Phosphoserine phosphatase

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