HSP22 — Cicer arietinum

Summary

CaHSP22 (LOC101497389) on chickpea chromosome 4 encodes a small heat shock protein (HSP20 family) with an A-crystallin/Hsp20 domain and a CS domain, and is annotated as a protein folding chaperone. It is associated with responses to heat, hydrogen peroxide, hypoxia, and salinity, as well as protein folding, protein oligomerization, and several metabolic processes including mannose and glutamate metabolism, CoA biosynthesis, the pentose-phosphate shunt, and the TCA cycle. The gene is linked to heat tolerance and heat acclimation. Its product localizes to the cytoplasm, endoplasmic reticulum, and ER lumen. Studies of related genes in other species connect the HSP22 family to seed protein content, germination rate, seed maturation, chlorophyll content, and high temperature stress response.