HSP70 — Oryza sativa Indica Group

Summary

BGIOSGA034362 (HSP70) on chromosome 11 of Indica rice encodes an ATP-dependent protein folding chaperone with heat shock protein binding and ATP hydrolase activity, belonging to the Hsp70 family. It is associated with protein folding in the ER, the ERAD pathway, the unfolded protein response, auxin transport and signaling, response to heat and other stresses, response to virus, pollen tube growth, and amino acid membrane transport. The protein localizes to the ER chaperone complex, ER lumen, chloroplast membrane, tonoplast, cytoplasm, and nucleus. The gene has been connected to agronomically important traits including grain yield per plant, spikelet fertility, spikelet number, plant height, leaf size, root length, relative root length, and heat tolerance. Studies of related genes in other species link the family to ER stress responses.