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Positive regulator of brassinosteroid (BR) signaling. Transcription factor that activates target gene expression by binding specifically to the DNA sequence 5'-CANNTG-3'(E box) through its N-terminal domain. Can bind individually to the promoter as a homodimer or synergistically as a heterodimer with BIM1, BIM2 or BIM3. The C-terminal domain is probably involved in transcriptional activation (PubMed:12007405, PubMed:15680330, PubMed:18467490, PubMed:19170933). Recruits the transcription elongation factor IWS1 to control BR-regulated gene expression (PubMed:20139304). Forms a trimeric complex with IWS1 and ASHH2/SDG8 to regulate BR-regulated gene expression (PubMed:24838002). Promotes quiescent center (QC) self-renewal by cell divisions in the primary root. Binds to the E-boxes of the BRAVO promoter to repress its expression (PubMed:24981610). UniProt
Pathway Maps
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Subunit Structure
Interacts with ASK7/BIN2 through its C-terminal domain and with the bHLH transcription factors BIM1, BIM2 and BIM3 through its C- and N-terminal domains. Interacts (via N-terminus) with REF6 and ELF6 (PubMed:12427989, PubMed:15680330, PubMed:18467490). Interacts with MYB30 (PubMed:19170933). Interacts with IWS1 (PubMed:20139304). Interacts with ASHH2/SDG8 (PubMed:24838002). Binds to MYB56 when dephosphorylated in the nucleus of quiescent center (QC) cells (PubMed:24981610). Binds to WRKY46, WRKY54 and WRKY70 to cooperatively regulate the expression of target genes (PubMed:28576847). UniProt
The central part (140-272) is important for interaction with MYB30. UniProt
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The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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