DNA-binding protein, which specifically recognizes the GL1 enhancer sequence (PubMed:12535344). May be involved in leaf initiation (PubMed:12535344). May play redundant roles with GPL1 and GPL2 in cytokinin responses by regulating the transcript levels of type-A ARR response genes (PubMed:18162594). 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). May play a role in plant defense (PubMed:29192025). Homo- and heterodimers (PubMed:18162594, PubMed:29192025). Interacts with GPL1, GPL2 and GPL3 (PubMed:18162594). Interacts with KIN10, KIN11 and FLZ4 (PubMed:24600465). Interacts with KIN10 and KIN11 via its N-terminal part (PubMed:29192025). Interacts with GPL1 and GPL3 via its C-terminal part (PubMed:29192025). Expressed in the apical meristem and young leaf primordia (PubMed:12535344, PubMed:18162594). Not detected in emerging or mature leaves (PubMed:12535344). Detected in the vascular tissues of cotyledons and leaves, in hydathodes and at the base of flowers and siliques, but not in roots (PubMed:18162594). Up-regulated by KNAT1. Not regulated by gibberellins. No visible phenotype. Overexpression of GEBP results in a reduced plant growth, a delay in flowering, a reduced anthocyanin accumulation, a delayed senescence and an enhanced resistance toward a virulent strain of the biotrophic oomycete pathogen H.arabidopsidis. Belongs to the GeBP family.