General description
A cell-permeable, non-toxic triazolylbenzyl-pyrimidinamine compound that acts as a highly selective, potent, and reversible inhibitor of ubiquitin-specific protease 1 (USP1)-USP1 associated factor 1 (UAF1) deubiquitinase (DUB) (IC50 = 76, 174, and 820 nM in Ub-Rhodamine; K63 linked diubiquitin; and Ub-PCNA substrate based assays) without disrupting USP1-UAF1 association. The inhibition appears to be allosteric in nature with inhibition constants of 68 nM and 183 nM (for free enzyme and enzyme-substrate complex, respectively). Displays excellent selectivity over 18-DUBs including USP1 and USP46-UAF1, related deSUMOylases & deneddylases, 70 unrelated proteases, and 451 kinases. Effectively sensitizes cisplatin-resistant NSCLC H596 cells and U2OS osteosarcoma cells to cisplatin (Cat. No. 232120) and blocks cell cycle at the S phase (EC50 = 171 and 59 nM for 1:1 and 1:4 ratio of cisplatin to ML323 in H596 cells).Please note that the molecular weight for this compound is batch-specific due to variable water content.
Biochem/physiol Actions
Cell permeable: yes
Primary Target
USP1-UAF1 deubiquitinase (DUBs) complex
Reversible: yes
Packaging
Packaged under inert gas
Preparation Note
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.
Other Notes
Dexheimer, T.S., et al. 2014. J. Med. Chem.57, in press.
Liang, Q., et al. 2014. Nat Chem Biol.10, 298.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Toxicity: Standard Handling (A)
| assay | ≥98% (HPLC) |
| Quality Segment | 100 |
| form | powder |
| manufacturer/tradename | Calbiochem® |
| storage condition | protect from light,OK to freeze |
| color | off-white |
| solubility | DMSO: 100 mg/mL |
| storage temp. | 2-8°C |
| SMILES string | CC1=CN=C(N=C1NCC2=CC=C(C=C2)N3C=CN=N3)C4=CC=CC=C4C(C)C |
| InChI | 1S/C23H24N6/c1-16(2)20-6-4-5-7-21(20)23-24-14-17(3)22(27-23)25-15-18-8-10-19(11-9-18)29-13-12-26-28-29/h4-14,16H,15H2,1-3H3,(H,24,25,27) |
| InChI key | VUIRVWPJNKZOSS-UHFFFAOYSA-N |
