金山科研平台，产品价格货期咨询微信：jinshanbio Source:Mouse myeloma cell line, NS0-derived, Met1-Ile238 with a C-terminal 6-His tag Accession #:BAI49682 N-terminal Sequence Analysis:Tyr19 & Thr21 Structure:Noncovalently-linked homodimer Purity:>95%, by SDS-PAGE under reducing conditions and visualized by silver stain. Predicted Molecular Mass:25.7 kDa (monomer) SDS-PAGE:40-55 kDa, reducing conditions Activity:Measured by its ability to block IL-2-induced proliferation of CTLL‑2 mouse cytotoxic T cells.The ED₅₀ for this effect is typically 0.4-2.4µg/mL in the presence of 1 ng/mL of rcaIL-2 (R&DSystems, Catalog# 1815-CL). Formulation:Lyophilized from a 0.2 µm filtered solution in PBS.See Certificate of Analysis for details. Molecule Information: IL-2 R alpha Long Name: Interleukin 2 Receptor alpha Aliases: CD25; IL2RA Entrez Gene IDs: 3559 (Human); 16184 (Mouse); 25704 (Rat); 403870 (Canine) Background: IL-2 R alpha

Alone, IL-2 R alpha binds IL-2 with low affinity, but is unable to transduce a signal. The alpha/beta combination binds IL-2 with intermediate affinity, but is still unable to transmit a signal inside the cell. The beta/gamma complex has intermediate affinity and is capable of signaling if the concentration of IL-2 is relatively high.

A soluble form of IL-2 R alpha is present in the serum in parallel with its increased cellular expression. There are reports of soluble IL-2 R beta as well. The biologic function of soluble IL-2 R alpha is unclear because, due to its low affinity, it is expected to be a poor inhibitor of IL-2. IL-2 R alpha is a precursor type I membrane protein with a signal peptide, an extracellular region, a transmembrane region, and a cytoplasmic domain. Studies suggest a correlation between the levels of IL-2 R alpha in serum with the onset of rejection in allograft recipients, with autoimmune disease activation in rheumatoid arthritis and systemic lupus erythematosis patients and with the course of some leukemias and lymphomas.