Western Blot: MEK7 [p Thr277] Antibody [NBP2-29678] - Recombinant MKK7b1 (14-542) was left untreated (Lane 1) or phosphorylated by MEKK1 (14-196) (Lane 2) and probed with anti-phospho-MKK7/SKK4 (Thr275/Ser277) (1:1000 dilution).