Experimental Data Snapshot
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(2010) Bioorg Med Chem Lett 20: 6237-6241
Several structure-guided optimisation strategies were explored in order to improve the hERG selectivity profile of cathepsin K inhibitor 1, whilst maintaining its otherwise excellent in vitro and in vivo profile. Ultimately, attenuation of clogP and pK(a) properties proved a successful approach and led to the discovery of a potent analogue 23, which, in addition to the desired selectivity over hERG (>1000-fold), displayed a highly attractive overall profile.
Merck Research Laboratories, MSD, Newhouse, Lanarkshire, ML1 5SH Scotland, United Kingdom. zoran.rankovic@merck.com
 Explore in 3D: Structure |Sequence Annotations |Electron Density |Validation Report |Ligand Interaction (O47)
Biological assembly 1 assigned by authors and generated by PISA (software)
Macromolecule Content
Entity ID: 1 | |||||
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Molecule | Chains | Sequence Length | Organism | Details | Image |
Cathepsin K | 215 | Homo sapiens | Mutation(s): 0  Gene Names: CTSK, CTSO, CTSO2 EC: 3.4.22.38 | ![]() | |
UniProt & NIH Common Fund Data Resources | |||||
Find proteins for P43235 (Homo sapiens) Explore P43235  Go to UniProtKB:  P43235 | |||||
PHAROS:  P43235 GTEx:  ENSG00000143387  | |||||
Entity Groups  | |||||
Sequence Clusters | 30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity | ||||
UniProt Group | P43235 | ||||
Sequence AnnotationsExpand | |||||
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Ligands 1 Unique | |||||
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ID | Chains | Name / Formula / InChI Key | 2D Diagram | 3D Interactions | |
O47 Query on O47 Download Ideal Coordinates CCD File  | B [auth A] | 3-{2-[(E)-iminomethyl]-6-propylpyrimidin-4-yl}-N,N-dimethyl-5-(trifluoromethyl)benzamide C18 H19 F3 N4 O FLPAOFVJMBOQGB-LSHDLFTRSA-N |
Length ( Å ) | Angle ( ˚ ) |
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a = 37.695 | α = 90 |
b = 48.967 | β = 90 |
c = 103.958 | γ = 90 |
Software Name | Purpose |
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CrystalClear | data collection |
MOLREP | phasing |
REFMAC | refinement |
CrystalClear | data reduction |
CrystalClear | data scaling |
RCSB PDB Core Operations are funded by theU.S. National Science Foundation (DBI-2321666), theUS Department of Energy (DE-SC0019749), and theNational Cancer Institute,National Institute of Allergy and Infectious Diseases, andNational Institute of General Medical Sciences of theNational Institutes of Health under grant R01GM157729.