α1B-AR, Abcam, ab169523

In “Commercially available antibodies directed against α-adrenergic receptor subtypes and other G protein-coupled receptors with acceptable selectivity in flow cytometry experiments”, Tripathi et al study the specificity of 8 different antibodies against α-adrenergic receptor (AR) subtypes. The specificity of the antibodies was tested by flow cytometry using human vascular smooth muscle cell. Here, a fluorescent signal was measured when treated with siRNA specific for the α-adrenergic receptor (Human ADRA1B (147) (E-005420-00-0050)) and compared with the fluorescent signal from cells treated with non-targeting RNA.

When using this antibody, a 82% reduction in fluorescence was observed.

See full description in the article:
https://www.ncbi.nlm.nih.gov/pubmed/26660071