MUM4 — Camelina sativa

Summary

CsMUM4 (CSA17G093920) in Camelina sativa encodes a bifunctional enzyme with UDP-glucose 4,6-dehydratase, UDP-4-keto-6-deoxy-glucose-3,5-epimerase, and UDP-4-keto-rhamnose-4-keto-reductase activities, classified as EC 4.2.1.76. The protein localizes to the Golgi stack membrane, cytosol, nucleus, and stress granules. It is associated with nucleotide-sugar metabolism, particularly UDP-rhamnose and UDP-L-arabinose biosynthesis, as well as mucilage and capsule polysaccharide anabolism, cell wall organization, and galactose metabolism. Phenotypic associations include seed coat mucilage synthesis and production, rhamnogalacturonan I biosynthesis, seed mucilage development and composition, seed oil content, root hair development, and seed coat development. Studies of related genes in other species link the family to mucilage biosynthesis and flavonoid glycoside production.