2bgy

Fit of the x-ray structure of the baterial flagellar hook fragment flge31 into an EM map from the hook of Caulobacter crescentus.Fit of the x-ray structure of the baterial flagellar hook fragment flge31 into an EM map from the hook of Caulobacter crescentus.

2bgy, resolution 20.00Å Show:Asymmetric Unit Biological Assembly Structural highlights 2bgy is a 1 chain structure with sequence from Salmonella enterica subsp. enterica serovar Typhimurium. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 20Å Experimental data: Check Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function FLGE_SALTY 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 axial proteins of the bacterial flagellum function as a drive shaft, universal joint, and propeller driven by the flagellar rotary motor; they also form the putative protein export channel. The N- and C-terminal sequences of the eight axial proteins were predicted to form interlocking alpha-domains generating an axial tube. We report on an approximately 1-nm resolution map of the hook from Salmonella typhimurium, which reveals such a tube made from interdigitated, 1-nm rod-like densities similar to those seen in maps of the filament. Atomic models for the two outer domains of the hook subunit were docked into the corresponding outermost features of the map. The N and C termini of the hook subunit fragment are positioned next to each other and face toward the axis of the hook. The placement of these termini would permit the residues missing in the fragment to form the rod-like features that form the core domain of the hook. We also fit the hook atomic model to an approximately 2-nm resolution map of the hook from Caulobacter crescentus. The hook protein sequence from C. crescentus is largely homologous to that of S. typhimurium except for a large insertion (20 kDa). According to difference maps and our fitting, this insertion is found on the outer surface of the hook, consistent with our modeling of the hook. A partial atomic structure for the flagellar hook of Salmonella typhimurium.,Shaikh TR, Thomas DR, Chen JZ, Samatey FA, Matsunami H, Imada K, Namba K, Derosier DJ Proc Natl Acad Sci U S A. 2005 Jan 25;102(4):1023-8. Epub 2005 Jan 18. PMID:15657146 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Flagellar protein 3D structures The Bacterial Flagellar Hook