Transcriptional regulator that specifically binds to GA-rich elements (GAGA-repeats) present in regulatory sequences of genes involved in developmental processes. Negatively regulates the homeotic gene AGL11/STK, which controls ovule primordium identity, by a cooperative binding to purine-rich elements present in the regulatory sequence leading to DNA conformational changes. Expressed in seedlings, leaves and pistils. Detected in the base of flowers and tips of carpels, in leaf and sepal vasculature, in young rosette, in the lateral and tip of primary roots, and in the whole ovule. Early detected in the floral meristem and floral organ primordia. At later stages, expressed in all floral organs and in particular in the ovule. Belongs to the BBR/BPC family.