Recognizes and binds the palindromic sequence 5'-TTGGCNNNNNGCCAA-3' present in viral and cellular promoters and in the origin of replication of adenovirus type 2. These proteins are individually capable of activating transcription and replication. Binds DNA as a homodimer. Highest levels in skeletal muscle. Lower levels in heart, liver, kidney, lung and brain. Very low levels in testis and spleen. The 9aaTAD motif is a transactivation domain present in a large number of yeast and animal transcription factors. Belongs to the CTF/NF-I family.