Sequence-specific DNA-binding protein that interacts with inducible viral and cellular enhancer elements to regulate transcription of selected genes. AP-2 factors bind to the consensus sequence 5'-GCCNNNGGC-3' and activate genes involved in a large spectrum of important biological functions including proper eye, face, body wall, limb and neural tube development. They also suppress a number of genes including MCAM/MUC18, C/EBP alpha and MYC. AP-2-beta appears to be required for normal face and limb development and for proper terminal differentiation and function of renal tubular epithelia.
Involvement in disease
Defects in TFAP2B are the cause of Char syndrome (CHAR) [MIM:169100]. CHAR is an autosomal dominant disorder characterized by patent ductus arteriosus (PDA), facial dysmorphism and hand anomalies.
Belongs to the AP-2 family.
Sumoylated on Lys-21; which inhibits transcriptional activity.