Fig. 4.
Epitope tags distinguish the ATP-binding mutant from the wild-type trkB receptor. A, COS cells transfected with either vector control (lane 1) or trkBIVH (lane 2). Lysates were immunoprecipitated with IVH Ab (12CA5), separated by 6% SDS-PAGE, then immunoblotted with IVH Ab. B, COS cells transfected with either vector control (lane 1) or ATPmutmyc (lane 2). Lysates were immunoprecipitated with anti-myc Ab (9E10), separated by 6% SDS-PAGE, and then blotted with anti-myc Abs.