Alignment of E9A sequences from c-Myb with homologous sequences in Myb proteins from various species. All sequences were obtained from GenBank. The alignments were performed with the computer program ClustalW (61). The most highly conserved residues are highlighted and were determined by using the computer program Boxshade. Dark shading indicates identity; light shading indicates similarity; dashes indicate gaps in the alignment. Dmyb, Drosophila Myb; Hu, human; Mo, mouse; Ch, chicken; Ur, sea urchin; Dr, Drosophila.