Ning Zhang

The paper shows XyG-synthesizing glycosyltransferases traffic independently to the Golgi, have distinct sub-Golgi localization, and vary in stability, revealing mechanisms of protein interactions and complex assembly.

This study shows that Arabidopsis XXTs interact with SAR1 via di-arginine motifs for ER-to-Golgi transport, and mutations disrupt this interaction, causing mislocalization and reduced xyloglucan biosynthesis.