Figure 5
Erk1 is associated with focal adhesions. BxPC-3 cells were stimulated with 10 nM of mature TGFβ1 for ten minutes followed by preparation of the Triton-X100 nonsoluble fraction and precipitation with αVβ6 integrin antibodies. The precipitate was then re-precipitated with anti-FAK antibodies (sc-1688) and analyzed with an Erk1 antibody (sc-93). In part, the cells were preincubated with a TGFβ1 antibody [10].