2wwd

3D-structure of the modular autolysin LytC from Streptococcus pneumoniae in complex with pneummococcal peptidoglycan fragment

spinqualitylabelsall models 2wwd, resolution 2.25Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2wwd is a 1 chain structure with sequence from Streptococcus pneumoniae R6. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.25Å Ligands: ALA, CHT, GLN, GOL, MUB, NAG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q8DP07_STRR6 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 first structure of a pneumococcal autolysin, that of the LytC lysozyme, has been solved in ternary complex with choline and a pneumococcal peptidoglycan (PG) fragment. The active site of the hydrolase module is not fully exposed but is oriented toward the choline-binding module, which accounts for its unique in vivo features in PG hydrolysis, its activation and its regulatory mechanisms. Because of the unusual hook-shaped conformation of the multimodular protein, it is only able to hydrolyze non-cross-linked PG chains, an assertion validated by additional experiments. These results explain the activation of LytC by choline-binding protein D (CbpD) in fratricide, a competence-programmed mechanism of predation of noncompetent sister cells. The results provide the first structural insights to our knowledge into the critical and central function that LytC plays in pneumococcal virulence and explain a long-standing puzzle of how murein hydrolases can be controlled to avoid self-lysis during bacterial growth and division. Insights into pneumococcal fratricide from the crystal structures of the modular killing factor LytC.,Perez-Dorado I, Gonzalez A, Morales M, Sanles R, Striker W, Vollmer W, Mobashery S, Garcia JL, Martinez-Ripoll M, Garcia P, Hermoso JA Nat Struct Mol Biol. 2010 May;17(5):576-81. Epub 2010 Apr 18. PMID:20400948 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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