Human CD129/IL9R Recombinant Protein (C-Strep) is a recombinant protein expressed in mammalian cells, spanning Ser41-Pro270, with a C-terminal Strep tag. Predicted molecular weight: 29.06 kDa. Purity: >90% as determined by SDS-PAGE. Supplied lyophilized from a solution in PBS pH 7.4, 1 mM EDTA, 4% Trehalose, 1% Mannitol. Applications: ELISA, immunogen, SDS-PAGE and Western blot. Interleukin-9 receptor is a ~57 kDa protein. Plays an important role in the immune response against parasites by acting as a receptor of IL9. For research use only.