Double DAP-seq uncovered synergistic DNA binding of interacting bZIP transcription factors.
Double DAP-seq uncovered synergistic DNA binding of interacting bZIP transcription factors.
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DOI:
10.1038/s41467-023-38096-2
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发表时间:
2023-05-05
影响因子:
16.6
通讯作者:
Huang, Shao-shan Carol
中科院分区:
文献类型:
--
作者:
Li, Miaomiao;Yao, Tao;Lin, Wanru;Hinckley, Will E. E.;Galli, Mary;Muchero, Wellington;Gallavotti, Andrea;Chen, Jin-Gui;Huang, Shao-shan Carol
Many eukaryotic transcription factors (TF) form homodimer or heterodimer complexes to regulate gene expression. Dimerization of BASIC LEUCINE ZIPPER (bZIP) TFs are critical for their functions, but the molecular mechanism underlying the DNA binding and functional specificity of homo- versus heterodimers remains elusive. To address this gap, we present the double DNA Affinity Purification-sequencing (dDAP-seq) technique that maps heterodimer binding sites on endogenous genomic DNA. Using dDAP-seq we profile twenty pairs of C/S1 bZIP heterodimers and S1 homodimers in Arabidopsis and show that heterodimerization significantly expands the DNA binding preferences of these TFs. Analysis of dDAP-seq binding sites reveals the function of bZIP9 in abscisic acid response and the role of bZIP53 heterodimer-specific binding in seed maturation. The C/S1 heterodimers show distinct preferences for the ACGT elements recognized by plant bZIPs and motifs resembling the yeast GCN4 cis-elements. This study demonstrates the potential of dDAP-seq in deciphering the DNA binding specificities of interacting TFs that are key for combinatorial gene regulation. Here, the authors describe a new method to study how some proteins work together to control gene activity. They show that certain protein pairs can recognize new DNA sequences that they can’t recognize individually and control a wider range of genes.
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