FKBPL has similarity to the immunophilin protein family, which play a role in immunoregulation and basic cellular processes involving protein folding and trafficking. The encoded protein is thought to have a potential role in the induced radioresistance. Also it appears to have some involvement in the control of the cell cycle.
FKBPL is involved in cellular response to stress. It was first isolated in 1999 and was initially named DIR1. It was later reclassified because of its homology to the FKBP family of proteins and was renamed FKBP-like (FKBPL). A separate study that found it to be involved in the stabilisation of newly synthesised p21 termed it Wisp39.
^Robson TA, Lohrer H, Bailie JR, Hirst DG, Joiner MC, Arrand JE (February 1997). "Gene regulation by low-dose ionizing radiation in a normal human lung epithelial cell line". Biochem. Soc. Trans. 25 (1): 335–42. PMID9056895.
^Robson T, Joiner MC, Wilson GD, McCullough W, Price ME, Logan I, Jones H, McKeown SR, Hirst DG (November 1999). "A novel human stress response-related gene with a potential role in induced radioresistance". Radiat. Res. Radiation Research, Vol. 152, No. 5. 152 (5): 451–61. doi:10.2307/3580140. JSTOR3580140. PMID10521921.
^Jascur T, Brickner H, Salles-Passador I, Barbier V, El Khissiin A, Smith B, Fotedar R, Fotedar A (January 2005). "Regulation of p21(WAF1/CIP1) stability by WISp39, a Hsp90 binding TPR protein". Mol. Cell. 17 (2): 237–49. doi:10.1016/j.molcel.2004.11.049. PMID15664193.
^McKeen HD, McAlpine K, Valentine A, Quinn DJ, McClelland K, Byrne C, O'Rourke M, Young S, Scott CJ, McCarthy HO, Hirst DG, Robson T (July 2008). "A novel FK506-like binding protein (FKBPL) interacts with the glucocorticoid receptor and regulates steroid receptor signalling". Endocrinology. 149 (11): 5724–34. doi:10.1210/en.2008-0168. PMID18669603.
^McKeen HD, Byrne C, Jithesh PV, Donley C, Valentine A, Yakkundi A, O'Rourke M, Swanton C, McCarthy HO, Hirst DG, Robson T (February 2010). "FKBPL regulates estrogen receptor signaling and determines response to endocrine therapy". Cancer Res. 70 (3): 1090–100. doi:10.1158/0008-5472.CAN-09-2515. PMID20103631.