cdc2/cyclina

Olomoucine is an ATP-competitive inhibitor of Cdk2/cyclin A, Cdc2/CyclinB, CDK2/CyclinE, CDK5/p35, and ERK1/p44 MAP kinase with IC50s of 7, 7, 7, 3, and 25 µM, respectively. It regulates the cell cycle and exhibits anti-melanin tumor activities.

Purvalanol A (NG-60) is an effective and cell-permeable CDK inhibitor with IC50 of 70/4/35/850 nM for cdk2-cyclin A/B/E, and cdk4-cyclin D1, respectively.

Seliciclib (Roscovitine) is a potent inhibitor of Cdk2/cyclin E (IC50=0.1 µM). Seliciclib also inhibits Cdk7/cyclin H, Cdk5/p35 and Cdc2/cyclin B (IC50=0.49/0.16/0.65 µM). Seliciclib has antitumor activity.

CHIR-124 is an effective Chk1 inhibitor (IC50: 0.3 nM). It has 2, 000-fold selectivity against Chk2, 500- to 5, 000-fold less activity against Cdc2 and CDK2/4.