The function of Ensembl gene identifier ENSG00000105767 (CADM4, cell adhesion molecule 4) is as follows. Cell adhesion molecule, exhibiting calcium- and magnesium- independent cell-cell adhesion activity (PubMed:16261159). In its palmitoylated form, is required for proper oligodendrocyte maturation and myelination in CNS via its association with other cell adhesion molecules such as CADM2/3 and MAG (By similarity). May have tumor- suppressor activity (PubMed:16261159). {ECO:0000250|UniProtKB:Q8R464, ECO:0000269|PubMed:16261159}.