Fig. 4From: The Tetrahymena metallothionein gene family: twenty-one new cDNAs, molecular characterization, phylogenetic study and comparative analysis of the gene expression under different abiotic stressorsPhylogenetic tree (18S rRNA) of Tetrahymena species with reported CdMTs and their modular structures. Two well defined ribo-groups corresponding to both taxonomical groups were obtained. Multiple alignments of ribo-nucleotide sequences were obtained by using the T-Coffee program. Numbers indicate bootstrap values from 2000 replicates. Branch lengths are drawn to scale as indicated by the scale bar. The number of bi-, tri-, tetra- or penta- modular structures of CdMTs are indicated for each Tetrahymena group. See Table 1 for ciliate species identificationBack to article page