8cwb

Laser Off Temperature-Jump XFEL structure of Lysozyme Bound to N,N'-diacetylchitobiose

spinqualitylabelsall models 8cwb, resolution 1.51Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8cwb is a 1 chain structure with sequence from Gallus gallus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.51Å Ligands: CL, NA, NAG, NDG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function LYSC_CHICK Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents. Has bacteriolytic activity against M.luteus. Publication Abstract from PubMed Understanding and controlling protein motion at atomic resolution is a hallmark challenge for structural biologists and protein engineers because conformational dynamics are essential for complex functions such as enzyme catalysis and allosteric regulation. Time-resolved crystallography offers a window into protein motions, yet without a universal perturbation to initiate conformational changes the method has been limited in scope. Here we couple a solvent-based temperature jump with time-resolved crystallography to visualize structural motions in lysozyme, a dynamic enzyme. We observed widespread atomic vibrations on the nanosecond timescale, which evolve on the submillisecond timescale into localized structural fluctuations that are coupled to the active site. An orthogonal perturbation to the enzyme, inhibitor binding, altered these dynamics by blocking key motions that allow energy to dissipate from vibrations into functional movements linked to the catalytic cycle. Because temperature jump is a universal method for perturbing molecular motion, the method demonstrated here is broadly applicable for studying protein dynamics. Mapping protein dynamics at high spatial resolution with temperature-jump X-ray crystallography.,Wolff AM, Nango E, Young ID, Brewster AS, Kubo M, Nomura T, Sugahara M, Owada S, Barad BA, Ito K, Bhowmick A, Carbajo S, Hino T, Holton JM, Im D, O'Riordan LJ, Tanaka T, Tanaka R, Sierra RG, Yumoto F, Tono K, Iwata S, Sauter NK, Fraser JS, Thompson MC Nat Chem. 2023 Nov;15(11):1549-1558. doi: 10.1038/s41557-023-01329-4. Epub 2023 , Sep 18. PMID:37723259 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Lysozyme 3D structures

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