5l41

Thermolysin in complex with JC148 (MPD cryo protectant)

spinqualitylabelsall models 5l41, resolution 1.25Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5l41 is a 1 chain structure with sequence from Bacillus thermoproteolyticus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.25Å Ligands: 6QC, CA, DMS, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function THER_BACTH Extracellular zinc metalloprotease. Publication Abstract from PubMed A previously studied congeneric series of thermolysin inhibitors addressing the solvent-accessible S2' pocket with different hydrophobic substituents showed modulations of the surface water layers coating the protein-bound inhibitors. Increasing stabilization of water molecules resulted in an enthalpically more favorable binding signature, overall enhancing affinity. Based on this observation, we optimized the series by designing tailored P2' substituents to improve and further stabilize the surface water network. MD simulations were applied to predict the putative water pattern around the bound ligands. Subsequently, the inhibitors were synthesized and characterized by high-resolution crystallography, microcalorimetry, and surface plasmon resonance. One of the designed inhibitors established the most pronounced water network of all inhibitors tested so far, composed of several fused water polygons, and showed 50-fold affinity enhancement with respect to the original methylated parent ligand. Notably, the inhibitor forming the most perfect water network also showed significantly prolonged residence time compared to the other tested inhibitors. Rational Design of Thermodynamic and Kinetic Binding Profiles by Optimizing Surface Water Networks Coating Protein-Bound Ligands.,Krimmer SG, Cramer J, Betz M, Fridh V, Karlsson R, Heine A, Klebe G J Med Chem. 2016 Dec 8;59(23):10530-10548. Epub 2016 Nov 30. PMID:27933956 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Thermolysin 3D structures

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