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Members of the Rab family of small GTPases are involved in multiple trafficking events in both endocytotic and biosynthetic pathways. To understand more fully the regulation of these events, a concerted effort is underway to ascertain the binding partners and regulators of Rabs. Here, we describe methods to assess binding of Rab11a with Rab11-FIP2 and other Rab11-FIPs utilizing a modified far-Western approach. We then broaden this application to assess binding of Rab11-FIP2 with myosin Vb and homodimerization of Rab11-FIP2.