Involved in transport from the endoplasmic reticulum to the Golgi apparatus (By similarity). Also plays a role in transporting the tyrosine kinase receptor let-23 from the endoplasmic reticulum to the plasma membrane of vulval precursor cells (PubMed:32053105). RNAi-mediated knockdown results in the reduced plasma membrane localization and intracellular accumulation of the tyrosine kinase receptor let-23 in vulval precursor cells. Belongs to the small GTPase superfamily. SAR1 family.