Predicted to be involved in several processes, including endoplasmic reticulum tubular network organization; positive regulation of endoplasmic reticulum unfolded protein response; and regulation of endoplasmic reticulum tubular network organization. Predicted to be located in endoplasmic reticulum membrane; melanosome; and nuclear envelope. Predicted to be integral component of endoplasmic reticulum membrane. Predicted to be active in endoplasmic reticulum. Is expressed in several structures, including central nervous system; nasal cavity epithelium; retina; submandibular gland primordium; and trigeminal nerve. Orthologous to human TMEM33 (transmembrane protein 33). [provided by Alliance of Genome Resources, Apr 2022]