Anti-CHD1 antibodies are used in the immunodetection of the protein chromodomain helicase DNA binding protein 1. In humans, the canonical protein has a reported length of 1710 amino acid residues and a mass of 196.7 kDa. Its subcellular localization is in the nucleus and cytoplasm. Alternative splicing is reported to yield 2 different isoforms for this protein. It is reported to be expressed in many tissues including in the brain, where the highest level of expression is found in the cerebellum and basal ganglia. A member of the SNF2/RAD54 helicase protein family, it is known to be involved with chromatin remodeling and the regulation of transcription. Synonyms for this target antigen include PILBOS and ATP-dependent helicase CHD1.