Predicted to be involved in several processes, including negative regulation of GTPase activity; placenta development; and protein localization to plasma membrane. Predicted to act upstream of or within several processes, including PERK-mediated unfolded protein response; chordate embryonic development; and regulation of gene expression. Located in COPI-coated vesicle and zymogen granule membrane. Is integral component of membrane. Orthologous to human TMED2 (transmembrane p24 trafficking protein 2). [provided by Alliance of Genome Resources, Apr 2022]