plaa2 — Beta vulgaris subsp. vulgaris

Summary

BVRB_9G215820 (symbol plaa2) on sugar beet chromosome 9 encodes a protein with exo-D-galacturonase and polygalacturonase activity, belonging to the Glyco_hydro_28 and pectin lyase-fold families. The gene is associated with pectin breakdown, carbohydrate metabolism, cell wall organization, fermentation, secretion, and pollen-related processes including pollen tube development, pollen germination, and pollen development. The encoded product localizes to the pollen wall, vesicles, endoplasmic reticulum, Golgi complex, and extracellular space. Studies of related genes in other species link the family to exopolygalacturonase and pectinase functions. The gene is also annotated for IgE binding.