Figure 3.
Evolutionary relationship between human SR proteins. The phylogenetic tree is based on the alignment of all human SR proteins (Table 1). The number above each bar indicates the degree of similarity. The colored lines indicate different clusters, also referred to as SR protein families. The old names of SR proteins are given in parentheses. ClustalW was used to align protein sequences and to perform phylogenetic analysis. Phylogenetic trees were drawn by CTree using the ClustalW output.