Fig. 3. A comparative Bayesian evolutionary dendrogram of selected SNF members. This tree includes SNF members from three prokaryote and five eukaryote genomes and the most characterized SNF members from various insects; species abbreviations and color codes are given in the lower right corner insert. Branch lengths correspond to an evolutionary distance scale of 0.1 mutation per site (mps). The numbers at the nodes are posterior probabilities. Node values in the range 0.95-0.99 are shown, whereas nodes with a probability less then 0.95 were collapsed, and probability values of 1 are not shown. The red arrow indicates the position of cloned agNAT8. White and black triangles correspond with apparent gene expansion and conservation nodes. metNTT, metazoan neurotransmitter transporters; miNAT, mammalian-insect nutrient amino acid transporters (NAT); iNAT, insect NATs; ceNAT, Caenorhabditis elegans NATs, archNAT, archaean NATs; bacNAT, bacterial, Bacillus cereus NATs.