HSP70 — Asparagus officinalis

Summary

A4U43_C03F26570, designated AoHSP70 on asparagus chromosome 3, encodes a heat shock 70 kDa family protein with ATP hydrolase activity, ATP binding, and heat shock protein binding functions, acting as a protein folding chaperone. The gene is associated with protein refolding, the ERAD pathway, the unfolded protein response, steroidogenesis, progesterone anabolism, lipid metabolism, homeostasis, and responses to stress and heat. It has been linked to thermotolerance, heat shock, wound, abiotic stress, and radiation responses, as well as photosynthetic rate. The encoded protein localises to the ER lumen and chaperone complex, chloroplast stroma, cytosol, Golgi, membrane, plant-type vacuole, and secretory vesicles. Studies of related genes in other species connect the family to heat, drought, and salt stress tolerance, and to traits including seed weight, plant height, chlorophyll content, and net photosynthetic rate.