Transcription factor that binds to the DNA sequence 5'-ACTCAT-3' in target gene promoters. Promotes POX1/PRODH1 expression in response to hypoosmolarity stress (PubMed:15047879). Positively regulates the expression of ASN1 and POX2/PRODH2 genes, which are involved in amino acid metabolism (PubMed:18088315). Regulates several metabolic pathways such as myo-inositol, raffinose and trehalose. Regulates several trehalose metabolism genes, including TRE1, TPP5 and TPP6 (PubMed:21534971). Mediates recruitment of the histone acetylation machinery to activate auxin-induced transcription. Interacts with ADA2B adapter protein to promote ADA2B-mediated recruitment of SAGA-like histone acetyltransferase complexes to specific auxin-responsive genes (PubMed:24861440). Forms heterodimers with BZIP1, BZIP9, BZIP10, BZIP25 and BZIP63 (PubMed:16709202). Interacts with ADA2B (PubMed:24861440). Highly expressed in stems and flowers (PubMed:9620274). Expressed in root tips, cotyledons, leaf vasculature, embryos, apical parts of siliques and funiculi (PubMed:9721683). By light (PubMed:9620274). Induced by hypoosmolarity (PubMed:15047879). Repressed by sucrose (at protein level) (PubMed:9721683, PubMed:15208401). A highly conserved upstream open reading frame (uORF) coding for 42 amino acids is essential for the BZIP11 sucrose-induced repression of translation (SIRT) (PubMed:15208401). Plants over-expressing BZIP11 show severe alterations of plant growth and development, reduced seed set and viability (PubMed:18088315).