Anti-HOPA antibodies are used in antigen-specific immunodetection in biological samples. The target HOPA is a known alias name of the protein mediator complex subunit 12, encoded by the MED12 gene in humans. This 2177-amino acid residue protein is a known component of the Mediator complex, a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes. It is localized to the nucleus of the cell. In terms of tissue expression, it is ubiquitously expressed across many tissue types. Other synonyms for HOPA include ARC240, CAGH45, and FGS1. Immunohistochemistry is a widely used application for the HOPA antibodies listed below. In addition, ELISA is also a common application.