4Z0K image
Deposition Date 2015-03-26
Release Date 2015-05-20
Last Version Date 2024-10-23
Entry Detail
PDB ID:
4Z0K
Keywords:
HYDROLASE/HYDROLASE INHIBITOR
Title:
Rapid development of two Factor IXa inhibitors from Hit to Lead
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.41 Å
R-Value Free:
0.16
R-Value Work:
0.14
R-Value Observed:
0.14
Space Group:
H 3
4Z0K validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Coagulation factor IX
Gene (Uniprot):F9
Chain IDs:A
Chain Length:235
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P00740 Pfam ID:PF00089, PF14670 EC:3.4.21.22
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Coagulation factor IX
Gene (Uniprot):F9
Chain IDs:B
Chain Length:62
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P00740 Pfam ID:PF00089, PF14670 EC:3.4.21.22
Ligand Molecules
4LN
CL
NA
NHE
Primary Citation
Rapid development of two factor IXa inhibitors from hit to lead.
Bioorg.Med.Chem.Lett. 25 2321 2325 (2015)
PMID: 25937013 DOI: 10.1016/j.bmcl.2015.04.025

Abstact

Two high-throughput screening hits were investigated for SAR against human factor IXa. Both hits feature a benzamide linked to a [6-5]-heteroaryl via an alkyl amine. In the case where this system is a benzimidazolyl-ethyl amine the binding potency for the hit was improved >500-fold, from 9 μM to 0.016 μM. For the other hit, which contains a tetrahydropyrido-indazole amine, potency was improved 20-fold, from 2 μM to 0.09 μM. X-ray crystal structures were obtained for an example of each class which improved understanding of the binding, and will enable further drug discovery efforts.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
4YZU