CRLF2, also known as cytokine receptor-like factor 2 isoform 1, is a receptor for thymic stromal lymphopoietin. It is proposed to signal through a heterodimeric receptor complex that consists of a new member of the hemopoietin family termed CRLF2 and the IL-7R alpha-chain. The protein induces phosphorylation of Stat3 and Stat5 also activate JAK2 pathways. CRLF2 and IL-7R alpha are principally coexpressed on monocytes and dendritic cell populations and to a much lesser extent of various lymphoid cells. Source: Recombinant protein corresponding to aa23-231 from human CRLF2, fused to His-Tag at C-terminal, expressed in insect cell. Molecular Weight: ~25.2kD (218aa), 28-40kD (SDS-PAGE under reducing conditions.) Endotoxin: <1EU/1ug (determined by LAL method) AA Sequence: ADPQGGAAEG VQIQIIYFNL ETVQVTWNAS KYSRTNLTFH YRFNGDEAYD QCTNYLLQEG HTSGCLLDAE QRDDILYFSI RNGTHPVFTA SRWMVYYLKP SSPKHVRFSW HQDAVTVTCS DLSYGDLLYE VQYRSPFDTE WQSKQENTCN VTIEGLDAEK CYSFWVRVKA MEDVYGPDTY PSDWSEVTCW QRGEIRDACA ETPTPPKPKL SKHHHHHH Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.