The protein encoded by this gene is a member of the immunophilin protein family, which play a role in immunoregulation and basic cellular processes involving protein folding and trafficking. This encoded protein is a cis-trans prolyl isomerase that binds the immunosuppressants FK506 and rapamycin. It is thought to function as an ER chaperone and may also act as a component of membrane cytoskeletal scaffolds. This gene has two alternatively spliced transcript variants that encode the same isoform. Multiple polyadenylation sites have been described for this gene, but the full length nature of this gene has not been determined.[6]
DiLella AG, Hawkins A, Craig RJ, Schreiber SL, Griffin CA (1992). "Chromosomal band assignments of the genes encoding human FKBP12 and FKBP13". Biochem. Biophys. Res. Commun. 189 (2): 819–23. doi:10.1016/0006-291X(92)92276-4. PMID1281998.
Hendrickson BA, Zhang W, Craig RJ, Jin YJ, Bierer BE, Burakoff S, DiLella AG (1993). "Structural organization of the genes encoding human and murine FK506-binding protein (FKBP) 13 and comparison to FKBP1". Gene. 134 (2): 271–5. doi:10.1016/0378-1119(93)90106-D. PMID7505249.
Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N, Berriz GF, Gibbons FD, Dreze M, Ayivi-Guedehoussou N, Klitgord N, Simon C, Boxem M, Milstein S, Rosenberg J, Goldberg DS, Zhang LV, Wong SL, Franklin G, Li S, Albala JS, Lim J, Fraughton C, Llamosas E, Cevik S, Bex C, Lamesch P, Sikorski RS, Vandenhaute J, Zoghbi HY, Smolyar A, Bosak S, Sequerra R, Doucette-Stamm L, Cusick ME, Hill DE, Roth FP, Vidal M (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. Bibcode:2005Natur.437.1173R. doi:10.1038/nature04209. PMID16189514. S2CID4427026.