IL17R_fnIII_D2 is the second extracellular fibronectin III-like domain on interleukin17-receptor-D molecules. The exact ligands of IL17R-D are not known [1,2,3].

1: Structural basis of receptor sharing by interleukin 17 cytokines. Ely LK, Fischer S, Garcia KC; Nat Immunol. 2009;10:1245-1251. PMID:19838198

2: Functional specialization of interleukin-17 family members. Iwakura Y, Ishigame H, Saijo S, Nakae S; Immunity. 2011;34:149-162. PMID:21349428

3: Mutations in FGF17, IL17RD, DUSP6, SPRY4, and FLRT3 are identified in individuals with congenital hypogonadotropic hypogonadism. Miraoui H, Dwyer AA, Sykiotis GP, Plummer L, Chung W, Feng B, Beenken A, Clarke J, Pers TH, Dworzynski P, Keefe K, Niedziela M, Raivio T, Crowley WF Jr, Seminara SB, Quinton R, Hughes VA, Kumanov P, Young J, Yialamas MA, Hall JE, Van Vliet G, Chanoine JP, Rubenstein J, Mohammadi M, Tsai PS, Sidis Y, Lage K, Pitteloud N; Am J Hum Genet. 2013;92:725-743. PMID:23643382