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Representative binding domains of transcription factor (3l1p, 4m9e, 5d5v, 1lbg, 1gt0, and 1nkp). The crystal structures were obtained from the Protein Data Bank (PDB) and redrawn using chimera. The respective domains and important regions have been labelled. HTH stands for helix-turn-helix domain. bHLH stands for basic helix-loop-helix motif. HD and HMG stand for homeodomain and high-mobility group box domain, respectively. Adapted from Refs. [30].
