cell adhesion molecule 3(CADM3) Homo sapiens IGSF4B is a brain-specific protein related to the calcium-independent cell-cell adhesion molecules known as nectins (see PVRL3, MIM 607147) (Kakunaga et al., 2005 [PubMed 15741237]).[supplied by OMIM, Mar 2008],domain:The cytoplasmic region mediates interaction with EPB41L1, DLG3, MPP6 and CASK.,function:Involved in the cell-cell adhesion. Has both calcium-independent homophilic cell-cell adhesion activity and calcium-independent heterophilic cell-cell adhesion activity with IGSF4, PVRL1 and PVRL3. Interaction with EPB41L1 may regulate structure or function of cell-cell junctions.,induction:Markedly in glioma cell lines and prostate cancer cell lines.,similarity:Belongs to the nectin family.,similarity:Contains 1 Ig-like V-type (immunoglobulin-like) domain.,similarity:Contains 2 Ig-like C2-type (immunoglobulin-like) domains.,subcellular location:Localized at the cell-cell attached sites of the plasma membrane.,subunit:Homodimer. Can form trans-heterodimers with PVRL3/nectin-3. Interacts with EPB41L1, DLG3, MPP6 and CASK.,tissue specificity:Isoform 1 is expressed mainly in adult and fetal brain. Isoform 2 is highly expressed in adult brain and weakly expressed in placenta. In brain, Isoform 2 is highly expressed in cerebellum.,
