A guide to selecting high-performing antibodies for ARID1B (UniProt ID: Q8NFD5) for use in western blot and immunoprecipitation.

ARID1B encodes a core subunit of the SWI/SNF (BAF) ATP-dependent chromatin-remodeling complex and plays a critical role in transcriptional regulation, cell differentiation, and development. Here we have characterized seven ARID1B commercial antibodies for western blot and immunoprecipitation by using a standardized experimental protocol based on comparing read-outs in knockout cell lines and isogenic parental controls. These studies are part of a larger, collaborative initiative seeking to address antibody reproducibility issues by characterizing commercially available antibodies for human proteins and publishing the results openly as a resource for the scientific community. While the use of antibodies and protocols vary between laboratories, we encourage readers to use this report as a guide to select the most appropriate antibodies for their specific needs.