Human clathrin light chain A (CLTA) was amplified by PCR from a plasmid that was provided by L. Greene (NIH, USA)36 (link). This CLTA sequence is identical to the CLTA expressed in SK-MEL-2 cells. The African green monkey CLTA gene was amplified by reverse transcription PCR (RT–PCR) from poly-A mRNA of BSC-1 cells and subcloned into a pEGFP-N1 vector (Clontech) in which GFP was replaced with TagRFP-T (RFP)37 (link). TagRFP-T was a gift from R. Tsien (UC, San Diego, USA). A GTSGGS linker was placed between CLTA and RFP. Dynamin-2 (DNM2) was amplified by RT–PCR from poly-A mRNA of SK-MEL-2 cells and subcloned into a pEGFP-N1 vector with a GTSGGS linker between DNM2 and GFP.