Figure 4.

Bayesian majority rule consensus tree for the codon alignment of piscine and human aquaporins. The upper right panel shows the summarized topology of the complete tree rooted with archaean aqpm. The left panel shows the topology of the classical aquaporins (aqp0, -1, and -4), unorthodox aquaporins (aqp11 and -12) and Aqp8. Accession numbers are annotated with the taxa. Bayesian posterior probabilities are shown at each node. Scale bar indicates the rate of expected nucleotide substitutions per site.