4qx3

Cry3A Toxin structure obtained by injecting Bacillus thuringiensis cells in an XFEL beam, collecting data by serial femtosecond crystallographic methods and processing data with the CrystFEL software suite

spinqualitylabelsall models 4qx3, resolution 2.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4qx3 is a 1 chain structure with sequence from Bacillus thuringiensis serovar tenebrionis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CR3AA_BACTT Promotes colloidosmotic lysis by binding to the midgut epithelial cells of Coleoptera. Publication Abstract from PubMed It has long been known that toxins produced by Bacillus thuringiensis (Bt) are stored in the bacterial cells in crystalline form. Here we describe the structure determination of the Cry3A toxin found naturally crystallized within Bt cells. When whole Bt cells were streamed into an X-ray free-electron laser beam we found that scattering from other cell components did not obscure diffraction from the crystals. The resolution limits of the best diffraction images collected from cells were the same as from isolated crystals. The integrity of the cells at the moment of diffraction is unclear; however, given the short time ( approximately 5 micros) between exiting the injector to intersecting with the X-ray beam, our result is a 2.9-A-resolution structure of a crystalline protein as it exists in a living cell. The study suggests that authentic in vivo diffraction studies can produce atomic-level structural information. Protein crystal structure obtained at 2.9 A resolution from injecting bacterial cells into an X-ray free-electron laser beam.,Sawaya MR, Cascio D, Gingery M, Rodriguez J, Goldschmidt L, Colletier JP, Messerschmidt MM, Boutet S, Koglin JE, Williams GJ, Brewster AS, Nass K, Hattne J, Botha S, Doak RB, Shoeman RL, DePonte DP, Park HW, Federici BA, Sauter NK, Schlichting I, Eisenberg DS Proc Natl Acad Sci U S A. 2014 Aug 18. pii: 201413456. PMID:25136092 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Delta-endotoxin Pesticidal crystal protein

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