Transcription factor capable of interacting with purine rich repeats (GA repeats). Must associate with GABP-alpha to bind DNA. Heterotetramer of two alpha and two beta subunits. The C-terminal is necessary for the formation of a heterotetrameric GABP-alpha-2/beta-2 complex, and also facilitates homotypic dimerization. Interacts with ADGRB2 (PubMed:16412436). High levels in thymus, spleen, kidney and intestine.