7r1e

Mosquitocidal Cry11Ba determined at pH 10.4 from naturally-occurring nanocrystals by Serial femtosecond crystallography

spinqualitylabelsall models 7r1e, resolution 2.65Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7r1e is a 2 chain structure with sequence from Bacillus thuringiensis serovar jegathesan. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: GOL Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [C11BA_BACTJ] Promotes colloidosmotic lysis by binding to the midgut epithelial cells of mosquitos. Active on Aedes aegypti, Culex pipiens and Anopheles stephensi larvae. Publication Abstract from PubMed Cry11Aa and Cry11Ba are the two most potent toxins produced by mosquitocidal Bacillus thuringiensis subsp. israelensis and jegathesan, respectively. The toxins naturally crystallize within the host; however, the crystals are too small for structure determination at synchrotron sources. Therefore, we applied serial femtosecond crystallography at X-ray free electron lasers to in vivo-grown nanocrystals of these toxins. The structure of Cry11Aa was determined de novo using the single-wavelength anomalous dispersion method, which in turn enabled the determination of the Cry11Ba structure by molecular replacement. The two structures reveal a new pattern for in vivo crystallization of Cry toxins, whereby each of their three domains packs with a symmetrically identical domain, and a cleavable crystal packing motif is located within the protoxin rather than at the termini. The diversity of in vivo crystallization patterns suggests explanations for their varied levels of toxicity and rational approaches to improve these toxins for mosquito control. De novo determination of mosquitocidal Cry11Aa and Cry11Ba structures from naturally-occurring nanocrystals.,Tetreau G, Sawaya MR, De Zitter E, Andreeva EA, Banneville AS, Schibrowsky NA, Coquelle N, Brewster AS, Grunbein ML, Kovacs GN, Hunter MS, Kloos M, Sierra RG, Schiro G, Qiao P, Stricker M, Bideshi D, Young ID, Zala N, Engilberge S, Gorel A, Signor L, Teulon JM, Hilpert M, Foucar L, Bielecki J, Bean R, de Wijn R, Sato T, Kirkwood H, Letrun R, Batyuk A, Snigireva I, Fenel D, Schubert R, Canfield EJ, Alba MM, Laporte F, Despres L, Bacia M, Roux A, Chapelle C, Riobe F, Maury O, Ling WL, Boutet S, Mancuso A, Gutsche I, Girard E, Barends TRM, Pellequer JL, Park HW, Laganowsky AD, Rodriguez J, Burghammer M, Shoeman RL, Doak RB, Weik M, Sauter NK, Federici B, Cascio D, Schlichting I, Colletier JP Nat Commun. 2022 Jul 28;13(1):4376. doi: 10.1038/s41467-022-31746-x. PMID:35902572 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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