SAM (sterile alpha motif) domain of DLC-1,2-like (Deleted in liver cancer) subfamily is a protein-protein interaction domain located at the N-terminus of the protein. Members of this subfamily do not form dimers/oligomers through their SAM domains. They participate in regulation of cell migration and lipid transfer. SAM domain of human DLC1 protein contains the EF1A1 (eukaryotic elongation factor) binding motif, thus SAM facilitates recruitment of EF1A1 to the membrane periphery and suppresses cell migration. Human Dlc2 gene is known as a tumor suppressor gene. It was found underexpressed in hepatocellular carcinoma.
Jiyao W et al.(2023). "The conserved domain database in 2023.",