HSP70 — Nicotiana attenuata

Summary

A4A49_29180 (HSP70) in coyote tobacco (Nicotiana attenuata) encodes a heat shock 70 kDa protein, a member of the Hsp70 chaperone family with ATPase activity, and is associated with protein folding, heat stress response, and leaf senescence. The gene product is linked to ethylene binding and signaling, brassinosteroid-mediated signaling, calcium signaling, sumoylation, and the ERAD pathway. It has been connected to traits including seed weight, seed size, photosynthetic rate, chlorophyll content, stomatal resistance and opening, lignin content, trichome morphology, stem elongation, root morphology, flowering time, abscisic acid sensitivity, and plant growth and development. Localization evidence places the protein in the ER, plastid stroma, thylakoid, and chloroplast envelope. Related genes in other species link the family to chloroplast development, thermotolerance, and protein import into chloroplasts.