5DFP

Crystal structure of PAK1 in complex with an inhibitor compound FRAX1036

Summary for 5DFP

• Entry DOI: 10.2210/pdb5dfp/pdb
• Related: 5DEW 5DEY
• Descriptor: Serine/threonine-protein kinase PAK 1, 6-[2-chloro-4-(6-methylpyrazin-2-yl)phenyl]-8-ethyl-2-{[2-(1-methylpiperidin-4-yl)ethyl]amino}pyrido[2,3-d]pyrimidin-7(8H)-one, DIMETHYL SULFOXIDE, ... (4 entities in total)
• Functional Keywords: transferase-transferase inhibitor complex, transferase/transferase inhibitor
• Biological source: Homo sapiens (Human)
• Cellular location: Cytoplasm : Q13153
• Total number of polymer chains: 1
• Total formula weight: 33963.43

Authors

Maksimoska, J.,Marmorstein, R.,Wang, W. (deposition date: 2015-08-27, release date: 2016-01-27, Last modification date: 2024-10-23)

Primary citation

Ndubaku, C.O.,Crawford, J.J.,Drobnick, J.,Aliagas, I.,Campbell, D.,Dong, P.,Dornan, L.M.,Duron, S.,Epler, J.,Gazzard, L.,Heise, C.E.,Hoeflich, K.P.,Jakubiak, D.,La, H.,Lee, W.,Lin, B.,Lyssikatos, J.P.,Maksimoska, J.,Marmorstein, R.,Murray, L.J.,O'Brien, T.,Oh, A.,Ramaswamy, S.,Wang, W.,Zhao, X.,Zhong, Y.,Blackwood, E.,Rudolph, J.
Design of Selective PAK1 Inhibitor G-5555: Improving Properties by Employing an Unorthodox Low-pK a Polar Moiety.
Acs Med.Chem.Lett., 6:1241-1246, 2015

PubMed Abstract: Signaling pathways intersecting with the p21-activated kinases (PAKs) play important roles in tumorigenesis and cancer progression. By recognizing that the limitations of FRAX1036 (1) were chiefly associated with the highly basic amine it contained, we devised a mitigation strategy to address several issues such as hERG activity. The 5-amino-1,3-dioxanyl moiety was identified as an effective means of reducing pK a and logP simultaneously. When positioned properly within the scaffold, this group conferred several benefits including potency, pharmacokinetics, and selectivity. Mouse xenograft PK/PD studies were carried out using an advanced compound, G-5555 (12), derived from this approach. These studies concluded that dose-dependent pathway modulation was achievable and paves the way for further in vivo investigations of PAK1 function in cancer and other diseases.

PubMed: 26713112
DOI: 10.1021/acsmedchemlett.5b00398

Experimental method

X-RAY DIFFRACTION (2.2 Å)