Multi-dimensional scaling of RIFIN/STEVOR sequences. Results of classical multidimensional scaling (MDS) of RIFIN/STEVOR protein sequences. Alignments of protein pairs were performed by Needleman-Wunsch algorithm by using both BLOSUM62 (A) and CCF53 (B). Corresponding percentages of similarity were used to calculate distance matrices that are used as input of MDS. Green dots represent sequences, red dots are the centroids calculated for each cluster (delimited by dashed ellipses). Distances between centroids (dotted lines) are also reported.