HSP70 — Solanum tuberosum

Summary

PGSC0003DMG400015920, designated StHSP70 on potato chromosome 7, encodes a heat shock 70 family chaperone with ATP hydrolase activity, adenyl-nucleotide exchange factor activity, and heat shock protein binding. The gene is associated with protein folding in the endoplasmic reticulum, the ERAD pathway, the unfolded protein response, nucleosome assembly, and protein refolding. It has been connected to chlorophyll breakdown, chlorophyll fluorescence, sucrose and lipid metabolism, proline metabolism, sterol and fatty acid anabolism, detoxification, nitric oxide storage, and responses to stress, virus, and virus-induced post-transcriptional gene silencing. StHSP70 is linked to heat tolerance, thermotolerance, wound response, and abiotic stress response, as well as traits including plant height, fresh and dry weights, net photosynthetic rate, hydrogen peroxide and proline content. The protein localises to the ER lumen, chloroplast membrane, tonoplast, Golgi, and secretory vesicles.