Elements included in the pBASE and pFAST vector platforms.

α-2,6 ST: N-terminal targeting signal of beta-galactoside alpha-2,6-sialyltransferase; β-1,4 GT: N-terminal targeting signal of beta-1,4-galactosyltransferase; c-Ha-ras: C-terminal targeting signal of c-Ha-ras p21 protein; COX-VIII: N-terminal targeting signal of cytochrome c oxidase subunit VIII; CRT: N-terminal targeting signal of calreticulin; ER: endoplasmic reticulum; GalNAcT1: N-terminal targeting signal of N-acetylgalactosaminyltransferase; hIFN-γ: human Interferon-gamma; NLS: C-terminal nuclear localization sequence; PTS1: C-terminal peroxisomal target signal 1; TGN: trans-Golgi network.