InterPro domain: IPR004901

This family consists of previously named Reversibly Glycosylated Proteins (RGPs), which are plant-specific cytosolic proteins that tend to associate with the Golgi membranes and have been implicated in polysaccharide biosynthesis [ 1 , 2 , 3 , 4 ]. In Arabidopsis thaliana the RGP protein family consists of five closely related members, three of which have been identified as UDP-arabinopyranose mutases that catalyze the formation of UDP-L-arabinofuranose (UDP-Araf) from UDP-Larabinopyranose (UDP-Arap). This interconversion is essential for cell wall establishment and plant development [ 5 ].

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1. Glucosylation activity and complex formation of two classes of reversibly glycosylated polypeptides. Plant Physiol. 129, 278-89
2. An arginyl residue in rice UDP-arabinopyranose mutase is required for catalytic activity and autoglycosylation. Carbohydr. Res. 345, 787-91
3. A plant mutase that interconverts UDP-arabinofuranose and UDP-arabinopyranose. Glycobiology 17, 345-54
4. Purification and biochemical characterization of recombinant rice UDP-arabinopyranose mutase generated in insect cells. Biosci. Biotechnol. Biochem. 74, 191-4
5. The interconversion of UDP-arabinopyranose and UDP-arabinofuranose is indispensable for plant development in Arabidopsis. Plant Cell 23, 1373-90