APS1 — Brassica oleracea var. botrytis

Summary

BoAPS1 (APS1) on cauliflower chromosome 5 encodes a sulphate adenylyltransferase, an enzyme with ATP:sulfate adenylyltransferase activity, also annotated with ADGase and kinase activities. The protein localises to the chloroplast envelope and stroma. BoAPS1 is associated with starch content, starch grain synthesis, and starch biosynthesis, degradation, accumulation, cycling and metabolism, as well as photosynthetic capacity and reduced leaf starch content. It is linked to carbohydrate metabolism, sulfate accumulation, and responses to cadmium, high and low temperature stress, and general plant stress. Associations also include ergosterol and glycogen anabolism, selenium metabolism, glucosinolate breakdown, detoxification, and procambium or phloem/xylem histogenesis. Studies of related genes in other species link the family to sulfate assimilation, sulfate concentration, and flowering time.