HSP70 — Solanum lycopersicum

Summary

SOLYC03G117620.4, the tomato HSP70 gene on chromosome 3, encodes a heat shock 70 kDa family protein with ATP hydrolase activity, ATP binding, heat shock protein binding, and protein folding chaperone functions. This gene is associated with diverse biological processes including autophagy in response to ER stress, protein denaturation, pigment accumulation, flower formation, strigolactone anabolism, and mRNA transcription. It localizes to the ER lumen, ER chaperone complex, chloroplast membrane, tonoplast, cytoplasm, and nucleus. Agronomically, HSP70 is associated with drought tolerance, photosynthetic rate, chlorophyll content, quantum yield, photochemical quenching, germination rate, flower abortion, and amino acid content. Studies of related genes in other species connect the family to protein folding and stress responses.