EXPA2 — Solanum tuberosum

Summary

PGSC0003DMG400030415, the potato gene EXPA2 on chromosome 6, encodes an expansin protein characterized by domains including Expan_Lol_pI and Expansin_CBD. The product is localized to the extracellular region and membrane. This gene is associated with plant-type cell wall loosening and organization, root and system development, secondary thickening, morphogenesis, and protein processing. It has also been linked to gibberellin biosynthesis, sucrose metabolism, detoxification, NO storage, signal transduction, and response to thirst. EXPA2 is associated with drought tolerance. Studies of related genes in other species further connect the expansin family to cell wall modification processes.