2CHY
THREE-DIMENSIONAL STRUCTURE OF CHEY, THE RESPONSE REGULATOR OF BACTERIAL CHEMOTAXIS
Summary for 2CHY
| Entry DOI | 10.2210/pdb2chy/pdb |
| Descriptor | CHEY (1 entity in total) |
| Functional Keywords | signal transduction protein |
| Biological source | Salmonella typhimurium |
| Cellular location | Cytoplasm: P0A2D5 |
| Total number of polymer chains | 1 |
| Total formula weight | 14025.25 |
| Authors | Mottonen, J.M.,Stock, A.M.,Stock, J.B.,Schutt, C.E. (deposition date: 1990-05-17, release date: 1990-07-15, Last modification date: 2024-02-14) |
| Primary citation | Stock, A.M.,Mottonen, J.M.,Stock, J.B.,Schutt, C.E. Three-dimensional structure of CheY, the response regulator of bacterial chemotaxis. Nature, 337:745-749, 1989 Cited by PubMed Abstract: Homologies among bacterial signal transduction proteins suggest that a common mechanism mediates processes such as chemotaxis, osmoregulation, sporulation, virulence, and responses to nitrogen, phosphorous and oxygen deprivation. A common kinase-mediated phosphotransfer reaction has recently been identified in chemotaxis, nitrogen regulation, and osmoregulation. In chemotaxis, the CheA kinase passes a phosphoryl group to the cytoplasmic protein CheY, which functions as a phosphorylation-activated switch that interacts with flagellar components to regulate motility. We report here the X-ray crystal structure of the Salmonella typhimurium CheY protein. The determination of the structure was facilitated by the use of site-specific mutagenesis to engineer heavy-atom binding sites. CheY is a single-domain protein composed of a doubly wound five-stranded parallel beta-sheet. The phosphoacceptor site in CheY is probably a cluster of aspartic-acid side chains near the C-terminal edge of the beta-sheet. The pattern of sequence similarity of CheY with components of other regulatory systems can be interpreted in the light of the CheY structure and supports the view that this family of proteins have a common structural motif and active site. PubMed: 2645526DOI: 10.1038/337745a0 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (2.7 Å) |
Structure validation
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