HSP70 — Nicotiana attenuata

Summary

A4A49_23538 (NaHSP70, also known as HSP70-17) encodes a heat shock 70 kDa protein with ATP hydrolase activity, ATP binding, heat shock protein binding, and protein folding chaperone functions. This gene is associated with a wide range of biological processes including response to stress, heat, and virus, as well as protein refolding, the ERAD pathway, calcium signaling, leaf senescence, pollen tube growth, cell division, and defense response. It has been linked to traits such as seed weight, seed size, lignin content, photosynthetic rate, stomatal resistance, and chlorophyll content. Localization evidence connects the product to the ER lumen, chloroplast membrane, Golgi complex, and plant-type vacuole. Studies of related genes in other species link the family to heat, drought, and salt stress tolerance, as well as traits including plant height, fruit size, and germination rate.