该基因编码激活的白细胞粘附分子（alcam），也称为CD166（分化簇166），是免疫球蛋白受体的一个亚家族的成员，在细胞外区域有五个免疫球蛋白样结构域（vvc2c2c2）。该蛋白与T细胞分化抗原CD6结合，参与细胞粘附和迁移过程。发现了编码不同亚型的多种选择性剪接转录变体。
This gene encodes activated leukocyte cell adhesion molecule (ALCAM), also known as CD166 (cluster of differentiation 166), which is a member of a subfamily of immunoglobulin receptors with five immunoglobulin-like domains (VVC2C2C2) in the extracellular domain. This protein binds to T-cell differentiation antigene CD6, and is implicated in the processes of cell adhesion and migration. Multiple alternatively spliced transcript variants encoding different isoforms have been found.