Attractin (ATRN)

Attractin is a protein encoded by the ATRN gene.Multiple transcript variants encoding different isoforms exist for this gene. One of the isoforms is a membrane-bound protein with sequence similarity to the mouse mahogany protein, a receptor involved in controlling obesity. The other isoform is a secreted protein involved in the initial immune cell clustering during inflammatory responses that may regulate the chemotactic activity of chemokines.

Expressed and secreted by activated T lymphocytes. Expressed at low to moderate levels in peripheral blood leukocytes, spleen, lymph node, tonsil, bone marrow and fetal liver. At very low levels found in thymus. Isoform 2/secreted is the major isoform in peripheral blood leukocytes.