In leucine zipper motif, leucine appears in every 7 amino acids, and it combine to DNA via these leucines of the structure.()
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In the transcription factor which contains helix-loop-helix motif,its DNA binding domain usually contains more acidic amino acid.()
All of the transcription factors can bind to the basical transcriptional apparatus to initiate the transcription.()
Transcription factor is the protein factor that can promote the initiation of transcription.()
Transcription factors must contain DNA binding domain.()