Anti-chch antibodies enable researchers to detect and measure the chch antigen in biological samples. This target is a reported synonym of the CHURC1 gene, which encodes churchill domain containing 1. This protein is known to function in the regulation of transcription, among other biological roles. The human version of chch has a canonical amino acid length of 112 residues and a protein mass of 12.9 kilodaltons. It is reported to be widely expressed in many tissue types. chch is a member of the Churchill protein family.