4y8x

Factor XIa in complex with the inhibitor methyl (4-{4-chloro-2-[(1S)-1-({(2E)-3-[5-chloro-2-(1H-tetrazol-1-yl)phenyl]prop-2-enoyl}amino)-2-phenylethyl]-1H-imidazol-5-yl}phenyl)carbamate

spinqualitylabelsall models 4y8x, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4y8x is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.9Å Ligands: 4GR, EDO, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease FA11_HUMAN Defects in F11 are the cause of factor XI deficiency (FA11D) [MIM:612416; also known as plasma thromboplastin antecedent deficiency or Rosenthal syndrome. It is a hemorrhagic disease characterized by reduced levels and activity of factor XI resulting in moderate bleeding symptoms, usually occurring after trauma or surgery. Patients usually do not present spontaneous bleeding but women can present with menorrhagia. Hemorrhages are usually moderate. Function FA11_HUMAN Factor XI triggers the middle phase of the intrinsic pathway of blood coagulation by activating factor IX. Publication Abstract from PubMed Structure-activity relationship optimization of phenylalanine P1' and P2' regions with a phenylimidazole core resulted in a series of potent FXIa inhibitors. Introducing 4-hydroxyquinolin-2-one as the P2' group enhanced FXIa affinity and metabolic stability. Incorporation of an N-methyl piperazine amide group to replace the phenylalanine improved both FXIa potency and aqueous solubility. Combination of the optimization led to the discovery of FXIa inhibitor 13 with a FXIa K i of 0.04 nM and an aPTT EC2x of 1.0 muM. Dose-dependent efficacy (EC50 of 0.53 muM) was achieved in the rabbit ECAT model with minimal bleeding time prolongation. Discovery of a Potent Parenterally Administered Factor XIa Inhibitor with Hydroxyquinolin-2(1H)-one as the P2' Moiety.,Hu Z, Wong PC, Gilligan PJ, Han W, Pabbisetty KB, Bozarth JM, Crain EJ, Harper T, Luettgen JM, Myers JE Jr, Ramamurthy V, Rossi KA, Sheriff S, Watson CA, Wei A, Zheng JJ, Seiffert DA, Wexler RR, Quan ML ACS Med Chem Lett. 2015 Apr 8;6(5):590-5. doi: 10.1021/acsmedchemlett.5b00066., eCollection 2015 May 14. PMID:26005539 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Factor XIa 3D structures

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