Predicted to be involved in endoplasmic reticulum membrane organization and endoplasmic reticulum to Golgi vesicle-mediated transport. Part of catalytic step 2 spliceosome. Is expressed in organism. Human ortholog(s) of this gene implicated in non-syndromic X-linked intellectual disability 107. Orthologous to human STEEP1 (STING1 ER exit protein 1).