ISDA

Deposition Date 2004-06-24

Release Date 2004-09-21

Last Version Date 2024-11-20

Entry Detail

PDB ID:

1TU6

Keywords:

HYDROLASE

Title:

Cathepsin K complexed with a ketoamide inhibitor

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Spodoptera frugiperda

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.75 Å

R-Value Free:

0.21

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Cathepsin K
Gene (Uniprot):CTSK
Chain IDs:A, B
Chain Length:215
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:P43235 Pfam ID:PF00112 EC:3.4.22.38

Ligand Molecules

FSP

SO4

Primary Citation

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.Show

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

PMID: 15341947 DOI: 10.1016/j.bmcl.2004.07.031

Abstact

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.

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Primary Citation of related structures