Anti-Interferon alpha Receptor Type I pS535/pS539 (Rabbit) antibody is suitable for use in Western Blotting and IHC. Specific conditions for reactivity should be optimized by the end user. The molecular weight of the IFNAR1 varies with cell line due to different levels of glycosylation in 293 and HeLa Cells; the mature form is approximately 110-130 kDa in size.