A minimal 14-residue peptide tag (LNDIFEAQKIEWHE) called the Avitag [18], which can be biotinylated by BirA, was PCR amplified and cloned into the vector using the QuickChange site-directed mutagenesis kit together with a 7-residue linker (GSPGSPG) to generate the final destination vector EGFP–LNKAVI–PP–GPI–pDEST.