Anti-Crsp33 antibodies enable researchers to detect and measure the Crsp33 antigen in biological samples. This target is a reported synonym of the MED7 gene, which encodes mediator complex subunit 7. This protein is known to function in protein ubiquitination and the regulation of transcription, among other biological roles. The human version of Crsp33 has a canonical amino acid length of 233 residues and a protein mass of 27.2 kilodaltons. It is reported to be localized in the nucleus of cells. Crsp33 is a member of the Mediator complex subunit 7 protein family.