Predicted to enable peptidyl-prolyl cis-trans isomerase activity. Predicted to be active in sarcoplasmic reticulum membrane. Is expressed in basal plate midbrain region; brain; cranial ganglion; and myotome. Human ortholog(s) of this gene implicated in Graves' disease. Orthologous to human FKBP1B (FKBP prolyl isomerase 1B).