Interferon-induced transmembrane protein 5 is a gene that encodes a membrane protein thought to play a role in bone mineralization.
Genomics
The gene is located on the short arm of the Crick strand of chromosome 11 (11p15.5). It is located with a cluster of interferon inducible genes but is itself not interferon inducible. The gene is 1,327 bases in length and encodes a protein of 132 amino acids with a predicted molecular weight of 14378 Daltons. Expression in adults is bone specific and highest in osteoblasts.
The homolog in the mouse is located on chromosome 7. A homolog is also known to be present in lizards.
Evolution
The gene first appeared in bony fish and its bone specific expression appears to be limited to therian mammals.
↑Hanagata N, Li X (2011). "Osteoblast-enriched membrane protein IFITM5 regulates the association of CD9 with an FKBP11-CD81-FPRP complex and stimulates expression of interferon-induced genes". Biochem Biophys Res Commun. 409 (3): 378–384. doi:10.1016/j.bbrc.2011.04.136.