HSP70 — Cucumis sativus

Summary

CsHSP70 (CSA_4G617390) on cucumber chromosome 4 encodes a heat shock 70 kDa protein with ATP hydrolase activity, ATP binding, adenyl-nucleotide exchange factor activity, heat shock protein binding, and protein folding chaperone functions. The gene is associated with protein folding in the endoplasmic reticulum, the ERAD pathway, the unfolded protein response, protein oxidation and refolding, secondary metabolite biosynthesis, sucrose metabolism, chlorophyll fluorescence, leaf senescence, cell death, pollen tube growth, and response to heat and stress. It is linked to photosynthetic rate and thermotolerance, as well as heat, thermal, abiotic, radiation, and wound stress responses. The protein localises to the ER lumen, ER chaperone complex, cytosol, membrane, tonoplast, Golgi, and secretory vesicles. Studies of related genes in other species connect the HSP70 family to heat and drought tolerance.