A cell-permeable quinazolinamine based compound that acts as a highly selective, non-ATP-competitive, and reversible inhibitor of phosphatidylinositol-5-phosphate-4-kinase γ (PI5P4Kγ; apparent IC₅₀ ~ 3.3 µM), but does not inhibit the activity of PI5P4Kα and PI5P4Kβ even at higher concentration (~100 µM). Suggested to bind at the PI5P binding region, including the activation loop. Also shown to be effective against E378H, I159V, and D161V mutant forms of PI5P4Kγ (71% inhibition at 10 µM). However, N165I mutant enzyme is resistant to its action even at higher concentration (~50 µM). Blocks the translocation of Na⁺/K⁺-ATPase to the plasma membrane in confluent mouse principal kidney cortical collecting duct (mpkCCD) cells in culture and prevents dome formation.

Please note that the molecular weight for this compound is batch-specific due to variable water content. Please refer to the vial label or the certificate of analysis for the batch-specific molecular weight. The molecular weight provided represents the baseline molecular weight without water.

Cell permeable: yes

Primary Target
PI5P4Kγ

Reversible: yes

Packaged under inert gas

Toxicity: Standard Handling (A)

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Clarke, J.H., et al. 2015. Biochem. J.. 466, 359.
Liang, Q., et al. 2014. Nat. Chem. Biol.10, 298.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany