Fig. 1.

Transfer of a bacterial glycolipid into Arabidopsis. (A) Simplified scheme for the synthesis of αGalβGalDG and βGlcβGalDG in chloroplasts. In WT Arabidopsis most αGalβGalDG is formed from βGalDG in the outer envelope by one of the two galactosyltransferases DGD1 or DGD2. In transgenic plants expressing the glucosyltransferase βGlcT from Chloroflexus, βGlcβGalDG is mainly formed in the inner envelope. Galactose and glucose are depicted as open or filled hexagons, respectively, and diacylglycerol is depicted by a vertical line with two waved lines. (B) Structures of αGalβGalDG and βGlcβGalDG.