%0 Journal Article %T RAB-27 and its effector RBF-1 regulate the tethering and docking steps of DCV exocytosis in C. elegans %A WanJuan Feng %A Tao Liang %A JunWei Yu %A Wei Zhou %A YongDeng Zhang %A ZhengXing Wu %A Tao Xu %J Science China Life Sciences %@ 1869-1889 %D 2012 %I %R 10.1007/s11427-012-4296-9 %X The molecular mechanisms by which dense core vesicles (DCVs) translocate, tether, dock and prime are poorly understood. In this study, Caenorhabditis elegans was used as a model organism to study the function of Rab proteins and their effectors in DCV exocytosis. RAB-27/AEX-6, but not RAB-3, was found to be required for peptide release from neurons. By analyzing the movement of DCVs approaching the plasma membrane using total internal reflection fluorescence microscopy, we demonstrated that RAB-27/AEX-6 is involved in the tethering of DCVs and that its effector rabphilin/RBF-1 is required for the initial tethering and subsequent stabilization by docking. %K exocytosis %K dense core vesicles %K RAB-3 %K RAB-27 %K C. elegans %K total internal reflection fluorescence microscopy %U http://link.springer.com/article/10.1007/s11427-012-4296-9