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BAY-293

2D structure
Target SOS1 
Targeted domain RAS GEF
Mode of action Inhibitor
Control BAY-294
Recommended cellular usage concentration 0.02 - 1.1 µM
In vivo use No
Donated by Bayer


Probe criteria


Inhibitor/agonist potency: goal is < 100 nM (IC50, Kd>/sub>) Surpasses criterion: IC50 (SOS1 interaction assay) = 21 nM
Selectivity within target family: > 30-fold Surpasses criterion: GEFs: IC50 > 20000 nM on SOS2 and MCF2L (DBS)
Selectivity outside target family 358 kinases at 1µM compound concentration > 67% remaining activity
Lead profiling screen (77 targets): BAY-293 binds to several aminergic GPCRs and transporters
Shows activity on various targets in the PDSP scan: Closest off-targets are: HTR2A (Ki = 133.44 nM), ADRA2C (Ki = 130.87 nM), HRH2 (Ki = 139.82 nM), HTR1D (Ki = 181.12 nM), TMEM97 (Ki = 179.81 nM), CHRM1 (Ki = 237.75nM), ADRA1D (Ki = 337.65 nM).
On target cell activity for cell-based targets: goal is < 1 µM IC50/EC50 Surpasses criterion: Inhibition of RAS-activation and pERK in cells with IC50 < 1 µM
Control compound (100 times less potent than the probe) Surpasses criterion: IC50 (SOS1 interaction assay) = 2340 nM (> 100 fold); Shows activity on various targets in the PDSP scan: Closest off-targets are: HRH2 (Ki = 21.13 nM), HTR2A (Ki = 69.37 nM), HTR2B (Ki = 74.56 nM), HTR1D (Ki = 93.49 nM)