Enables misfolded protein binding activity and unfolded protein binding activity. Involved in several processes, including cellular response to cAMP; cellular response to gamma radiation; and cellular response to metal ion. Acts upstream of or within response to endoplasmic reticulum stress. Located in membrane; mitochondrion; and smooth endoplasmic reticulum. Biomarker of fatty liver disease; post-traumatic stress disorder; transient cerebral ischemia; ureteral obstruction; and visual epilepsy. Human ortholog(s) of this gene implicated in dopamine beta-hydroxylase deficiency. Orthologous to human HSPA5 (heat shock protein family A (Hsp70) member 5). [provided by Alliance of Genome Resources, Apr 2022]