VP2 — Oryza sativa Indica Group

Summary

BGIOSGA023355 (VP2, OiVP2) on chromosome 6 of Indica rice encodes a protein belonging to the PPase-energised H-pump family and has proton-translocating pyrophosphatase activity (EC 7.1.3.1), with additional annotated activities including inorganic diphosphatase, RNA folding chaperone, SUMO transferase, SUMO binding, kinase binding, mRNA binding, metal binding, Zn binding, and protein binding. The gene is associated with vacuolar, tonoplast, Golgi, endosome, and chloroplast envelope localisation. It is associated with proton transmembrane transport, establishment of transmembrane electrochemical gradients, cell wall pectin metabolism, regulation of starch biosynthetic process, auxin polar transport, sucrose metabolism, cold acclimation, sumoylation, polar cell growth, leaf development, embryo development ending in seed dormancy, and responses to cold, abscisic acid, salinity, and thirst. Observed associations include seedling cold tolerance, cadmium accumulation, heat tolerance, chalkiness, stamen and trichome development, phosphate starvation tolerance, and grain traits such as amylose content, grain length, and grain size.