IL-2Rbeta is a member of the class I cytokine receptor superfamily [1]. It carries a cytokine-binding homology region, which is divided in two fibronectin type-III (FN-III) domains termed D1 and D2. Each domain contains seven beta-strands that form a sandwich of two antiparallel beta-sheets. The N-terminal D1 domain of IL-2Rbeta includes two highly conserved disulfide bridges [2]. This entry describes D1 of the N-terminal region of IL2Rbeta.

1: Structure of the quaternary complex of interleukin-2 with its alpha, beta, and gammac receptors. Wang X, Rickert M, Garcia KC; Science. 2005;310:1159-1163. PMID:16293754

2: Crystal structure of the IL-2 signaling complex: paradigm for a heterotrimeric cytokine receptor. Stauber DJ, Debler EW, Horton PA, Smith KA, Wilson IA; Proc Natl Acad Sci U S A. 2006;103:2788-2793. PMID:16477002