Alignments of complete genome sequences of marine picocyanobacteria. Genome sequences are translated in their six reading frames. (a) Comparison of the MED4 and SS120 genomes; (b) comparison of the SS120 and MIT9313 genomes; (c) comparison of the MIT9313 and WH8102 genomes. Colinear segments are shown in red and inversions in green. Translocated segments are above or below the diagonal.