TRF3, or TATA-box binding protein like 2, is a human gene encoded by TBPL2. It may also be known as: TATA box-binding protein-like protein 2; TATA box-binding protein-related factor 3; TBP-related factor 3; TBP-like protein 2; TATA box binding protein like 2; TBP2. The encoded protein has an amino acid length of 375 and a mass of 41.5 kDa. Other isoforms may exist. TRF3 is a member of the TBP family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.