HSP70 — Brassica oleracea var. botrytis

Summary

BoHSP70, located on cauliflower chromosome 7, encodes a member of the Hsp70 family of molecular chaperones, possessing ATP hydrolase activity and ATP binding, and functioning as a protein folding chaperone with heat shock protein binding activity. The gene is associated with protein import, homologous recombination, sexual reproduction, protein folding in the endoplasmic reticulum, the ER unfolded protein response, the ERAD pathway, protein refolding, response to virus, pollen germination and tube growth, pollen development, response to heat and stress, and homeostasis. It localises to the ER chaperone complex, ER lumen, secretory vesicle, chloroplast membrane, tonoplast, plant-type vacuole, Golgi complex, and membrane. BoHSP70 is associated with heat stress response, thermal stress tolerance, thermotolerance, wound response, abiotic stress response, heat shock response, and radiation response. Studies of related genes in other species connect the family to seed weight, germination rate, chlorophyll content, and stomatal resistance.