Probable transcription factor. Involved in stress responses (PubMed:21875893). Plays a repressive role in cell expansion by counteracting the positive role of CPR5 in this process, but does not regulate cell proliferation or endoreduplication (PubMed:21875893). Homo- and heterodimers. Interacts with GEBP, GPL1 and GPL2. Interacts with GEBP (PubMed:29192025). Expressed in the apical meristem and young leaf primordia. Detected in the vascular tissues of rosette leaves, in primary and secondary roots and at the base of flowers and siliques. Belongs to the GeBP family.