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. 2017 Sep 15;28(19):2492–2507. doi: 10.1091/mbc.E17-01-0022

FIGURE 3:

FIGURE 3:

Amish GMS WHAMM truncations do not promote actin nucleation but can associate with microtubules. (A) Purified MBP-WHAMM(WT), (Δ7), and (X6) were analyzed by SDS–PAGE and Coomassie blue staining or anti-MBP immunoblotting. WHAMM is abbreviated WHM. (B) Actin was polymerized in the presence of the Arp2/3 complex and either MBP, MBP-WHAMM(WT), (Δ7), or (X6). The amount of F-actin, in arbitrary fluorescent units (AU), formed over time is shown. (C) Microtubules were incubated in the presence of MBP-WHAMM(WT) or (Δ7), and collected by centrifugation. Proteins found in pellet (P) and supernatant (S) samples were separated by SDS–PAGE. Tubulin was visualized by Ponceau S staining, while WHAMM fusions were detected by anti-MBP blotting. (D) MBP-WHAMM(X6) was incubated in the presence or absence of microtubules and processed as in C. (E) Cos7 cells transiently coexpressing LAP-WHAMM(WT) and mCherry-WHAMM(X6) were fixed and stained with antibodies to visualize microtubules.