Predicted to enable protein disulfide isomerase activity and protein-disulfide reductase activity. Predicted to be involved in chaperone-mediated protein folding; positive regulation of protein folding; and response to endoplasmic reticulum stress. Located in cell surface and endoplasmic reticulum. Part of endoplasmic reticulum chaperone complex. Is expressed in embryo; medulla oblongata basal plate; olfactory cortex ventricular layer; and telencephalon ventricular layer. Orthologous to human PDIA4 (protein disulfide isomerase family A member 4). [provided by Alliance of Genome Resources, Apr 2022]