HSP70 — Brassica napus

Summary

BnHSP70 (HSP70-17) on chromosome A01 of oilseed rape encodes a heat shock 70 family chaperone with ATP hydrolase activity, ATP binding, and heat shock protein binding functions. It is associated with protein folding in the endoplasmic reticulum, the ER unfolded protein response, the ERAD pathway, protein refolding, fermentation, embryogenesis, pollen germination and tube growth, seed development, and responses to heat, stress, and virus. The gene has been linked to seed weight and chlorophyll content, as well as thermotolerance, thermal stress, abiotic stress, wound, heat shock, and radiation responses. Its product localises to the ER lumen, ER chaperone complex, chloroplast membrane, tonoplast, Golgi, and secretory vesicles. Related genes in other species link the family to sugar, proline, and cadmium content, germination rate, and stomatal resistance.