4y48

Endothiapepsin in complex with fragment B50

spinqualitylabelsall models 4y48, resolution 1.25Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4y48 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 1.249Å Ligands: ACT, DMS, GLY, GOL, PRO Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CARP_CRYPA Publication Abstract from PubMed Crystallographic screening of the binding of small organic compounds (termed fragments) to proteins is increasingly important for medicinal chemistry-oriented drug discovery. To enable such experiments in a widespread manner, an affordable 96-compound library has been assembled for fragment screening in both academia and industry. The library is selected from already existing protein-ligand structures and is characterized by a broad ligand diversity, including buffer ingredients, carbohydrates, nucleotides, amino acids, peptide-like fragments and various drug-like organic compounds. When applied to the model protease endothiapepsin in a crystallographic screening experiment, a hit rate of nearly 10% was obtained. In comparison to other fragment libraries and considering that no pre-screening was performed, this hit rate is remarkably high. This demonstrates the general suitability of the selected compounds for an initial fragment-screening campaign. The library composition, experimental considerations and time requirements for a complete crystallographic fragment-screening campaign are discussed as well as the nine fully refined obtained endothiapepsin-fragment structures. While most of the fragments bind close to the catalytic centre of endothiapepsin in poses that have been observed previously, two fragments address new sites on the protein surface. ITC measurements show that the fragments bind to endothiapepsin with millimolar affinity. Structures of endothiapepsin-fragment complexes from crystallographic fragment screening using a novel, diverse and affordable 96-compound fragment library.,Huschmann FU, Linnik J, Sparta K, Uhlein M, Wang X, Metz A, Schiebel J, Heine A, Klebe G, Weiss MS, Mueller U Acta Crystallogr F Struct Biol Commun. 2016 May 1;72(Pt 5):346-55. doi:, 10.1107/S2053230X16004623. Epub 2016 Apr 22. PMID:27139825 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Pepsin

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