“…Genes encoding some of the enzymes functioning at various steps of the protein glycosylation pathway have been characterized. These include, for example, GNTI (for N-ACETYL GLUCOSAMINYLTRANSFER-ASE I, encoded by COMPLEX GLYCAN1 [CGL1]) (von Schaewen et al, 1993;Wenderoth and von Schaewen, 2000;Strasser et al, 2005), GMII (an a-mannosidase II, encoded by HYBRID GLY-COSYLATION1 [HGL1]) (Strasser et al, 2006), STT3a (Koiwa et al, 2003), DGL1 (for DEFECTIVE GLYCOSYLATION1), an Arabidopsis homolog of an oligosaccharyltransferase complex subunit (Lerouxel et al, 2005), CYT1 (for CYTOKINESIS-DEFECTIVE1, mannose-1-phosphate guanylyltransferase) (Lukowitz et al, 2001), GCS1/KNF (glucosidase I), and RSW3 (glucosidase II; glucosidases I and II trim the terminal glucose of N-glycans). Mutations in these genes have some overlapping, yet differential, effects on plant growth, development, and stress responses.…”