Rabbit Anti-Human Chicken GABPB1 polyclonal antibody for WB. This gene encodes the GA-binding protein transcription factor, beta subunit. This protein forms a tetrameric complex;with the alpha subunit, and stimulates transcription of target genes. The encoded protein may be involved in;activation of cytochrome oxidase expression and nuclear control of mitochondrial function. The crystal structure of a;similar protein in mouse has been resolved as a ternary protein complex. Multiple transcript variants encoding;distinct isoforms have been identified for this gene.