ISDA

Entry Detail

PDB ID:

4O0R

Keywords:

transferase/transferase inhibitor

Title:

Back pocket flexibility provides group-II PAK selectivity for type 1 kinase inhibitors

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2013-12-14

Release Date:

2014-02-12

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.40 Å

R-Value Free:

0.24

R-Value Work:

0.20

R-Value Observed:

0.20

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Serine/threonine-protein kinase PAK 1
Chain IDs:A, B
Chain Length:300
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q13153 Pfam ID:PF00069 EC:2.7.11.1

Ligand Molecules

7KC

Primary Citation

Back Pocket Flexibility Provides Group II p21-Activated Kinase (PAK) Selectivity for Type I 1/2 Kinase Inhibitors.

Staben, S.T, Feng, J.A, Lyle, K, Belvin, M, Boggs, J, Burch, J.D, Chua, C.C, Cui, H, Dipasquale, A.G, Friedman, L.S, Heise, C, Koeppen, H, Kotey, A, Mintzer, R, Oh, A, Roberts, D.A, Rouge, L, Rudolph, J, Tam, C, Wang, W, Xiao, Y, Young, A, Zhang, Y, Hoeflich, K.P.Show

J.Med.Chem. 57 1033 1045 (2014)

PMID: 24432870 DOI: 10.1021/jm401768t

Abstact

Structure-based methods were used to design a potent and highly selective group II p21-activated kinase (PAK) inhibitor with a novel binding mode, compound 17. Hydrophobic interactions within a lipophilic pocket past the methionine gatekeeper of group II PAKs approached by these type I 1/2 binders were found to be important for improving potency. A structure-based hypothesis and strategy for achieving selectivity over group I PAKs, and the broad kinome, based on unique flexibility of this lipophilic pocket, is presented. A concentration-dependent decrease in tumor cell migration and invasion in two triple-negative breast cancer cell lines was observed with compound 17.

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