7qm4

Endothiapepsin in complex with compound TL00150 in 8% DMSO at 298 K

spinqualitylabelsall models 7qm4, resolution 1.79Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7qm4 is a 1 chain structure with sequence from Cryphonectria parasitica. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.79Å Ligands: DMS, PG5, U1H Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CARP_CRYPA Publication Abstract from PubMed Continuous developments in cryogenic X-ray crystallography have provided most of our knowledge of 3D protein structures, which has recently been further augmented by revolutionary advances in cryoEM. However, a single structural conformation identified at cryogenic temperatures may introduce a fictitious structure as a result of cryogenic cooling artefacts, limiting the overview of inherent protein physiological dynamics, which play a critical role in the biological functions of proteins. Here, a room-temperature X-ray crystallographic method using temperature as a trigger to record movie-like structural snapshots has been developed. The method has been used to show how TL00150, a 175.15 Da fragment, undergoes binding-mode changes in endothiapepsin. A surprising fragment-binding discrepancy was observed between the cryo-cooled and physiological temperature structures, and multiple binding poses and their interplay with DMSO were captured. The observations here open up new promising prospects for structure determination and interpretation at physiological temperatures with implications for structure-based drug discovery. Probing ligand binding of endothiapepsin by ;temperature-resolved' macromolecular crystallography.,Huang CY, Aumonier S, Engilberge S, Eris D, Smith KML, Leonarski F, Wojdyla JA, Beale JH, Buntschu D, Pauluhn A, Sharpe ME, Metz A, Olieric V, Wang M Acta Crystallogr D Struct Biol. 2022 Aug 1;78(Pt 8):964-974. doi: , 10.1107/S205979832200612X. Epub 2022 Jul 27. PMID:35916221 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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