ISDA: 4KAB

Deposition Date 2013-04-22

Release Date 2013-09-11

Last Version Date 2024-11-27

Entry Detail

PDB ID:

4KAB

Keywords:

Transferase/Transferase Inhibitor

Title:

FOCAL ADHESION KINASE CATALYTIC DOMAIN IN COMPLEX WITH 3-Methyl-1,4-dihydro-pyrazolo[4,5-c]pyrazole

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Trichoplusia ni

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.71 Å

R-Value Free:

0.21

R-Value Work:

0.17

R-Value Observed:

0.17

Space Group:

P 21 21 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Focal adhesion kinase 1
Gene (Uniprot):PTK2
Chain IDs:A, B
Chain Length:279
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q05397 Pfam ID:PF07714 EC:2.7.10.2

Ligand Molecules

4KA

Primary Citation

Fragment-based discovery of focal adhesion kinase inhibitors.

Gradler, U, Bomke, J, Musil, D, Dresing, V, Lehmann, M, Holzemann, G, Greiner, H, Esdar, C, Krier, M, Heinrich, T.Show

Bioorg.Med.Chem.Lett. 23 5401 5409 (2013)

PMID: 23973211 DOI: 10.1016/j.bmcl.2013.07.050

Abstact

Chemically diverse fragment hits of focal adhesion kinase (FAK) were discovered by surface plasmon resonance (SPR) screening of our in-house fragment library. Site specific binding of the primary hits was confirmed in a competition setup using a high-affinity ATP-site inhibitor of FAK. Protein crystallography revealed the binding mode of 41 out of 48 selected fragment hits within the ATP-site. Structural comparison of the fragment binding modes with a DFG-out inhibitor of FAK initiated first synthetic follow-up optimization leading to improved binding affinity.

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