6o4x | pdb_00006o4x

Binary complex of native hAChE with 9-aminoacridine

spinqualitylabelsall models 6o4x, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6o4x is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: AA, GOL, NO3 Gene: ACHE (HUMAN) Activity: Acetylcholinesterase, with EC number 3.1.1.7 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [ACES_HUMAN] Terminates signal transduction at the neuromuscular junction by rapid hydrolysis of the acetylcholine released into the synaptic cleft. Role in neuronal apoptosis. Publication Abstract from PubMed Structure-guided design of novel pharmacologically active molecules relies at least in part on functionally relevant accuracy of macromolecular structures for template based drug design. Currently, about 95% of all macromolecular X-ray structures available in the PDB (Protein Data Bank) were obtained from diffraction experiments at low, cryogenic temperatures. However, it is known that functionally relevant conformations of both macromolecules and pharmacological ligands can differ at higher, physiological temperatures. We describe in this article development and properties of new human acetylcholinesterase (AChE) crystals of space group P31 and a new unit cell, amenable for room-temperature X-ray diffraction studies. We co-crystallized hAChE in P31 unit cell with the reversible inhibitor 9-aminoacridine that binds at the base of the active center gorge in addition to inhibitors that span the full length of the gorge, donepezil (Aricept, E2020) and AChE specific inhibitor BW284c51. Their new low temperature P31 space group structures appear similar to those previously obtained in the different P3121 unit cell. Successful solution of the new room temperature 3.2 A resolution structure of BW284c51*hAChE complex from large P31 crystals enables us to proceed with studying room temperature structures of lower affinity complexes, such as oxime reactivators bound to hAChE, where temperature related conformational diversity could be expected in both oxime and hAChE, which could lead to better informed structure-based design under closer-to-physiological temperature conditions. A new crystal form of human acetylcholinesterase for exploratory room-temperature crystallography studies.,Gerlits O, Ho KY, Cheng X, Blumenthal D, Taylor P, Kovalevsky A, Radic Z Chem Biol Interact. 2019 Jun 6. pii: S0009-2797(19)30361-8. doi:, 10.1016/j.cbi.2019.06.011. PMID:31176713 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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