A cell-permeable, 5-carboxy-8-hydroxyquinoline that acts as a 2-oxoglutarate competitive inhibitor of JMJD (IC₅₀ = 200 nM against JMJD2E in a FDH coupled assay). It demonstrates higher selectivity than 2.4-PDCA against other 2-OG oxygenases (IC₅₀ = 2.4 µM, 1.7 µM, 20.5 µM, and 14.3 µM for JMJD2E, JMJD2A, FIH, and PHD2, respectively, in a MALDI-TOF MS assay). Additionally, it is shown to inhibit H3K9me3 demethylation (IC₅₀ = 86.5 µM) in JMJD2A-transfected HeLa cells in a cellular demethylase assay, dose-dependently.




This probe is supplied in conjunction with the Structural Genomics Consortium (SGC). For further characterization details, please visit the IOX1 probe summary on the SGC website.

Packaged under inert gas

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

Hamada, S., et al. 2010. J. Med. Chem.53, 5629.
King, D.N.F., et al. 2010. PLoS One5, e15535.

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

Toxicity: Regulatory Review (Z)