Figure 2.

Conservation of selected T-box residues and the presence of diagnostic residues for different members of the family. Position 149 is always a lysine in Xbra proteins from different species (blue) but not in other T-box proteins (red). A diagram of Xenopus Xbra is above, showing the relative positions of the DNA-binding domain, the nuclear localization signal, and the transcriptional activation domain.

Wilson and Conlon Genome Biology 2002 3:reviews3008.1-reviews3008.7   doi:10.1186/gb-2002-3-6-reviews3008