Predicted to enable MHC class I protein binding activity and MHC class I receptor activity. Predicted to be involved in antigen processing and presentation of exogenous peptide antigen via MHC class I. Predicted to be integral component of membrane. Predicted to be active in plasma membrane. Orthologous to human MFSD6 (major facilitator superfamily domain containing 6). [provided by Alliance of Genome Resources, Apr 2022]