Anti-HASH1 antibodies are protein reagents that detect specific antigens. The HASH1 antigen is another term for the human protein achaete-scute family bHLH transcription factor 1, encoded by the ASCL1 gene. The protein is reported to be a transcription factor that plays a key role in neuronal differentiation: acts as a pioneer transcription factor, accessing closed chromatin to allow other factors to bind and activate neural pathways. Canonically, it has an amino acid length of 236 residues and a mass of 25.5 kilodaltons. Its subcellular localization is in the nucleus and it is expressed in the hippocampus, cerebral cortex, cerebellum, and caudate. Other alias names for HASH1 include ASH1 and MASH1. ELISA and Western Blot are common applications for HASH1 antibodies.