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FOXH1, also named as FAST1 and FAST2, is a transcriptional activator. FOXH1 recognizes and binds to the DNA sequence 5'-TGT[GT][GT]ATT-3'. It is required for induction of the goosecoid (GSC) promoter by TGF-beta or activin signaling. It forms a transcriptionally active complex containing FOXH1/SMAD2/SMAD4 on a site on the GSC promoter called TARE (TGF-beta/activin response element). The antibody is specific to FOXH1.