Fig. 6 . Effect of MAPKKs on the phosphorylation of p38
induced by NP60. (A) Flag-tagged wild-type p38
(wt) and myc-NP60 were co-transfected into 293T cells. SB203580
was analyzed by western blotting with anti-phospho-p38 (left panel). Flag-tagged mutant p38
[p38(M)] and myc-NP60 were co-transfected into 293T cells. Phosphorylation of p38
was analyzed as above (right panel). (B) Flag-p38
and myc-NP60 were co-transfected into 293T cells together with MKK6b(A) or MKK4(A). Phosphorylation of p38
was analyzed as in A. (C) Flag-p38
and myc-NP60 were co-transfected into 293T cells together with MKK6b or MKK4. Phosphorylation of p38
was analyzed as in A.