该GABPB2 Polyclonal Antibody. The GABPB gene encodes at least 4 beta subunit isoforms that were originally thought to be encoded by 2 separate genes, GABPB1 andGABPB2. The gene on Hsa1q was named GABPB2 and the gene on Hsa15q was named GABPB1. The predicted GABPB1 andGABPB2subunits contain 383 and 347 amino acids, respectively, and are highly homologous.