The extracellular regulated kinases 1 and 2 (ERK1/2) are functionally redundant kinases activated by a variety of growth factors and mitogens.
1 SCH 772984 is a potent inhibitor of ERK1 and ERK2 (IC
50s = 4 and 1 nM, respectively).
2 It is highly selective, with only seven kinases of 300 tested showing more than 50% inhibition at a concentration of 1 μM. SCH 772984 has nanomolar cytotoxicity in tumor cells with mutations in BRAF, NRAS, or KRAS.
2 It is effective
in vivo, inducing regression of xenograft tumors in mice. SCH 772984 displays slow binding kinetics, binding to a novel binding pocket in inactive ERK isoforms.
3