Anti-TCEA1 antibodies are used in the immunodetection of the protein transcription elongation factor A1. In humans, the canonical protein has a reported length of 301 amino acid residues and a mass of 34 kDa. Its subcellular localization is in the nucleus. Up to 2 different isoforms have been reported for this protein. It is notably widely expressed in many tissue types. A member of the TFS-II protein family, TCEA1 is known to be involved with transcription by RNA polymerase II. Synonyms for this target antigen include SII, TCEA, TF2S, TFIIS, transcription elongation factor A protein 1, and GTF2S. TCEA1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of TCEA1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. In addition, Immunohistochemistry is also a common application.