Co-localization of APY3, GAE1, and GAE6 with AtGALT31A in the small compartments. AtGALT31A-mCer3 (A-I, green) was co-expressed with APY3-YFP (A-C, magenta), GAE1-YFP (D-F, magenta), and GAE6-YFP (G-I, magenta) in N. benthamiana leaves. AtGALT31A-mCer3 frequently co-localized with APY3-YFP, GAE1-YFP, and GAE6-YFP in the small compartments, which are approximately 0.5 μm in diameter. Scale bars = 10 μm.