Characterization of Tomato Sl-MBF1 Transcriptional Coactivator Gene Family

The regulation of eukaryotic gene activity at the transcriptional level involves multiprotein complexes and requires the concerted action of transcription factors and coactivator proteins. Transcription factors bind to DNA in a sequence-specific manner and essentially mark a gene for activation or repression through the recruitment of coactivator or corepressor proteins (Spiegelman and Heinrich, 2004).