A cell-permeable tetrahydro-b-carbolinylbarbiturate compound that selectively inhibits the E3 ligase activity of Mdm2-MdmX hetero-complex over that of Mdm2-Mdm2 homo-complex (70.6% vs. 17.6% inhibition, respectively, at 100uM), without affecting Mdm2-MdmX complex formation or the activity of two other UbcH5C-utilizing ligase complexes Roc1-Cul1 and BRCA1-BARD1. Effectively inhibits ubiquitination and proteasomal degradation of cellular Mdm2 and p53 (effective conc.=14uM in U2OS, RKO, and HCT116 cultures) and induce RKO and MEF cell death in a p53- and Mdm2-dependent manner. Unlike Nutlin-3, MEL23 does not interfere with Mdm2-p53 interaction. Formula: C19H22N4O3 Molecular Weight: 354.4 Solubility: DMSO (2.5mg/ml, clear, pale yellow solution) Storage and Stability: Lyophilized powder may be stored at -20C. Stable for 12 months at -20C. Reconstitute with sterile buffer or dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Molecular Weight:
354.4
Purity:
95% (HPLC)
Form:
Supplied as an off-white solid.
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