1TU6

Cathepsin K complexed with a ketoamide inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Potent and selective P2-P3 ketoamide inhibitors of cathepsin K with improved pharmacokinetic properties via favorable P1', P1, and/or P3 substitutions

Barrett, D.G.Catalano, J.G.Deaton, D.N.Hassell, A.M.Long, S.T.Miller, A.B.Miller, L.R.Shewchuk, L.M.Wells-Knecht, K.J.Willard, D.H.Wright, L.L.

(2004) BIOORG.MED.CHEM.LETT. 14: 4897-4902

  • DOI: 10.1016/j.bmcl.2004.07.031

  • PubMed Abstract: 
  • A series of ketoamides were synthesized and evaluated for inhibitory activity against cathepsin K. Exploration of the interactions between achiral P(2) substituents and the cysteine protease based on molecular modelling suggestions resulted in potent ...

    A series of ketoamides were synthesized and evaluated for inhibitory activity against cathepsin K. Exploration of the interactions between achiral P(2) substituents and the cysteine protease based on molecular modelling suggestions resulted in potent cathepsin K inhibitors that demonstrated high selectivity versus cathepsins B, H, and L. Subsequent modifications of the P(3), P(1), and P(1') moieties afforded orally bioavailable inhibitors.


    Organizational Affiliation

    Department of Medicinal Chemistry, GlaxoSmithKline, Research Triangle Park, NC 27709, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cathepsin K
A, B
215Homo sapiensGene Names: CTSK (CTSO, CTSO2)
EC: 3.4.22.38
Find proteins for P43235 (Homo sapiens)
Go to Gene View: CTSK
Go to UniProtKB:  P43235
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
FSP
Query on FSP

Download SDF File 
Download CCD File 
A, B
[1-(4-FLUOROBENZYL)CYCLOBUTYL]METHYL (1S)-1-[OXO(1H-PYRAZOL-5-YLAMINO)ACETYL]PENTYLCARBAMATE
C23 H29 F N4 O4
QTPYRNAKLBXKNP-SFHVURJKSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FSPIC50: 0.8 nM (100) BINDINGDB
FSPIC50: 0.83 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.190 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 62.179α = 90.00
b = 66.776β = 90.00
c = 107.708γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
CNSphasing
SCALEPACKdata scaling
HKL-2000data reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-09-21
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance