The ACTL domain of stomatal lineage bHLHs confers in vivo partner specificity
Basic helix-loop-helix (bHLH) transcription factors (TFs) comprise one of the largest TF families in plants. bHLHs act as dimers, and partner choice can have a profound impact on DNA binding and target gene regulation. Partner specificity is largely determined by the composition of the bHLH domain, but there is growing evidence that additional domains such as the ACT-like (ACTL) domain may…
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