Anti-TFIID (SI-1) Antibody

Produced by Antibodies.com as a primary antibody reagent, this rabbit polyclonal antibody targets the TFIID transcription factor complex in human samples. TFIID is a general transcription factor that binds core promoter elements, including the TATA box, and nucleates assembly of the RNA polymerase II pre-initiation complex. The unconjugated, polyclonal reagent is supplied at 100 µL in vial format and is validated for Western blot and immunohistochemistry workflows. Its unconjugated format permits flexible pairing with secondary reporters such as HRP, fluorophores, or biotin depending on the assay platform. For western blotting, the antibody is compatible with standard chemiluminescent and fluorescence detection systems, while immunohistochemistry applications benefit from antigen retrieval protocols suited to formalin-fixed paraffin-embedded or frozen tissue sections. The polyclonal nature of the reagent enables recognition of multiple epitopes on TFIID subunits, which can improve signal robustness in expression profiling studies of transcription factor dynamics, promoter occupancy, and differentiation-associated gene regulation. Single-use aliquoting helps limit repeated freeze-thaw exposure; refrigerated handling preserves activity during routine workflows, and freezing at -20°C supports longer-term storage. Intended for research use only, this reagent supports investigations into chromatin biology, transcriptional control, and RNA polymerase II initiation mechanisms in cell-based and tissue-based models.