A transcriptional modification motif encoded by homeobox and fork head genes

Homeodomain and fork head domain proteins are thought to act as transcription factors by binding to specific DNA target sequences and interacting with other proteins. Here I describe a motif which is present in members of both groups of transcription factor and which has been shown to modulate their ability to activate transcription. The presence of this motif in both homeodomain and fork head proteins indicates they may control transcription by a similar molecular mechanism, perhaps by interacting with the same cofactors.