A. Raw264.7 cells were transfected with Flag-Rab10 or control empty vector. The transfected cells were lysed in the presence of 2 mM GTPγS or 2 mM GDP. The Flag-Rab10 complex was immunoprecipitated with Flag-resin followed by extensive washing and elution of complexes with 200 μg mL-1 3xFlag-tide. Eluates were analyzed by SDS-PAGE followed by immuno-blotting with anti-Flag-HRP antibody. 