This 60 amino acid residue domain can bind to DNA [2] and is found in transcription factor proteins.

1: Control of Arabidopsis flower and seed development by the homeotic gene APETALA2. Jofuku KD, den Boer BG, Van Montagu M, Okamuro JK; Plant Cell. 1994;6:1211-1225. PMID:7919989

2: Ethylene-inducible DNA binding proteins that interact with an ethylene-responsive element. Ohme-takagi M, Shinshi H; Plant Cell 1995;7:173-182. PMID:7756828

3: The APETALA2 domain is related to a novel type of DNA binding domain. Weigel D; Plant Cell 1995;7:388-389. PMID:7773013

4: Discovery of the principal specific transcription factors of Apicomplexa and their implication for the evolution of the AP2-integrase DNA binding domains. Balaji S, Babu MM, Iyer LM, Aravind L; Nucleic Acids Res. 2005;33:3994-4006. PMID:16040597

5: The AP2 domain of APETALA2 defines a large new family of DNA binding proteins in Arabidopsis. Okamuro JK, Caster B, Villarroel R, Van Montagu M, Jofuku KD; Proc Natl Acad Sci U S A. 1997;94:7076-7081. PMID:9192694