S-15 Molecular Mechanisms for Localization and Intracellular Trafficking of Transporters : Their Implications in Drug Disposition   S15-1. The Role of ER Molecular Chaperones in the Intracellular Trafficking of ABC Transporters   S15-2. Regulation of Function and Expression of Organic Cation/Carnitine Transporter OCTN Family by PDZ Adaptor Proteins   S15-3. Internalization Mechanism of Biliary Transporters   S15-4. Molecular Mechanisms of Renal Urate Transport: Urate Transportsome