Predicted to enable several functions, including identical protein binding activity; protein disulfide isomerase activity; and protein-disulfide reductase (glutathione) activity. Acts upstream of or within cellular response to interleukin-7 and positive regulation of extrinsic apoptotic signaling pathway. Located in cell surface and endoplasmic reticulum. Is expressed in several structures, including alimentary system; brain; genitourinary system; hemolymphoid system gland; and limb segment. Human ortholog(s) of this gene implicated in autoimmune hepatitis. Orthologous to human PDIA3 (protein disulfide isomerase family A member 3). [provided by Alliance of Genome Resources, Apr 2022]