6sr2

X-ray pump X-ray probe on lysozyme.Gd nanocrystals: 37 fs time delay

spinqualitylabelsall models 6sr2, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6sr2 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 2.3Å Ligands: CL, DO3, GD, NA 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 X-ray free-electron lasers (XFELs) enable crystallographic structure determination beyond the limitations imposed upon synchrotron measurements by radiation damage. The need for very short XFEL pulses is relieved through gating of Bragg diffraction by loss of crystalline order as damage progresses, but not if ionization events are spatially non-uniform due to underlying elemental distributions, as in biological samples. Indeed, correlated movements of iron and sulfur ions were observed in XFEL-irradiated ferredoxin microcrystals using unusually long pulses of 80 fs. Here, we report a femtosecond time-resolved X-ray pump/X-ray probe experiment on protein nanocrystals. We observe changes in the protein backbone and aromatic residues as well as disulfide bridges. Simulations show that the latter's correlated structural dynamics are much slower than expected for the predicted high atomic charge states due to significant impact of ion caging and plasma electron screening. This indicates that dense-environment effects can strongly affect local radiation damage-induced structural dynamics. Structural dynamics in proteins induced by and probed with X-ray free-electron laser pulses.,Nass K, Gorel A, Abdullah MM, V Martin A, Kloos M, Marinelli A, Aquila A, Barends TRM, Decker FJ, Bruce Doak R, Foucar L, Hartmann E, Hilpert M, Hunter MS, Jurek Z, Koglin JE, Kozlov A, Lutman AA, Kovacs GN, Roome CM, Shoeman RL, Santra R, Quiney HM, Ziaja B, Boutet S, Schlichting I Nat Commun. 2020 Apr 14;11(1):1814. doi: 10.1038/s41467-020-15610-4. PMID:32286284 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Lysozyme 3D structures

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