APL2 — Solanum tuberosum

Summary

PGSC0003DMG400015952, also known as APL2, AGPS2, or StAPL2, encodes an ADP-glucose pyrophosphorylase (AGPase; EC 2.7.7.27) with ADGase activity and ATP binding, a key enzyme in starch biosynthesis. This potato gene on chromosome 7 is associated with starch concentration, amylose content, starch yield, and starch grain synthesis, as well as with glucose, fructose, sucrose, and reducing sugar content. It is linked to net photosynthetic rate, chlorophyll content, stem dry weight, seed weight, and protein content. The encoded protein localizes to the amyloplast and the glucose-1-phosphate adenylyltransferase complex, and is associated with carbohydrate storage, phloem loading, and regulation of starch metabolism. Related genes in other species are linked to starch biosynthesis and content, as well as soluble solids content.