Phylogenetic conservation of the WW ligand motifs within yeast proteins. (a) Positions of primary sequence motifs within S. cerevisiae Aat2, Ymr171c, Ylr392c, Prp2, and Yjl084c. (b) Logo representations  of the conserved region within the set of orthologs. The number of orthologs in each set is indicated. Gray dashed boxes highlight the conserved motifs; numbers indicate the position of the motif within the S. cerevisiae protein. Histograms represent the level of conservation of all S. cerevisiae X-X-x-X sequence determinants within the set of orthologs. Colored circles mark the bins that contain the PPxY, PPxF and LPxY motifs.
Hesselberth et al. Genome Biology 2006 7:R30 doi:10.1186/gb-2006-7-4-r30