Predicted to enable carbohydrate binding activity. Predicted to be located in external side of plasma membrane. Human ortholog(s) of this gene implicated in Alzheimer's disease; autoimmune disease (multiple); and cholangiocarcinoma. Is an ortholog of human REG1A (regenerating family member 1 alpha); REG1B (regenerating family member 1 beta); and REG3G (regenerating family member 3 gamma).