Unrooted phylogenetic tree

Figure 1. An unrooted phylogenetic tree of the myosins based on the amino acid sequence comparison of their head domains demonstrating the division of the myosin superfamily into nine classes. The lengths of the branches are proportional to the percent of amino acid sequence divergence and a calibration bar for 5% sequence divergence is shovk n. The different classes of myosins have been numbered using Roman numerals in rough order of their discovery and hypothetical models of the different myosin structures are shown. Question marks indicate either hypothetical or unknown structural features, and only a fraction of the known myosins are shown. (Taken, in modified form, from Cheney et al., 1993).

Fig. 1. Unrooted phylogenetic tree based on the core amino acid sequences of 113 catalases. The numbers at the three main nodes represent the proportion (out of 100) of bootstrap sampling that supports the topology. The three main clades are circled for clarity.

Fig. (7). Phylogenetic relationship of tomato subtilases. An unrooted phylogenetic tree is shown based on the amino acid sequences deduced from tomato subtilase genes and cDNAs. Numbers indicate PAM distances (accepted point mutations per 100 residues) between sequences. The figure was modified after (8).

Figure 21.2 Phylogenetic relationships within BVMOs. (sequences of 18 proteins with confirmed BVMO activity were aligned and an unrooted phylogenetic tree was calculated using Clustal X v. 1.83 and TreeView v. 1.4). ...

Fig. 10. Unrooted phylogenetic tree inferred from analysis of antibiotic sensitivity curves (ref [155]).

The evolutionary distance of flaviviridae polyproteins was used to generate an unrooted phylogenetic tree. The GB viruses are considered to form a group of their own with a close relationship to HCV. (s. fig. 22.20)... 

It was the analysis of the 16S rRNAs that first revealed the unique evolutionary position of the archaebacteria, and defined the primary evolutionary divisions of life on this planet (4,6). Figure 1 shows an unrooted phylogenetic tree based upon complete 16S rRNA sequences of representatives of the three primary lines of evolutionary descent the archaebacteria, the eubacteria and the eukaryotes. Within these primary lines of descent other major lines of descent have been delineated. Within the eubacteria, for example, some ten major divisions are now recognized. It has been suggested that these be given a systematic rank equivalent to phylum (12). However, this chapter will not elaborate upon the emerging phylogenetic description of life on this planet. The reader is referred to a recent review for a dedicated treatment of this subject (4,12). 

Figure 2 Unrooted phylogenetic tree for eight protein sequences of cellobiose dehydrogenases. The numbers in nodes represent bootstrap values for 100 replicates. The scale bar indicates the branch length corresponding to 0.1 amino acid substitutions per site.

Fig 4.4 Unrooted phylogenetic tree based on 16S rRNA gene comparison showing the position of rainwater (bold) and air isolates and the type strains most closely related (italic). Bootstrap probability values less than 50% were omitted from the figure. The scale bar indicates substitutions per nucleotide position. The GenBank accession numbers of type strains are in parentheses. Reproduced with permission from Marchant et al. (2008). 

Figure l. The universal unrooted phylogenetic tree showing three distinct primary kingdoms Eubacteria, Archaebacteria and Eukaryotes (from Woese 1987a). 

Figure L17. Unrooted phylogenetic tree showing the position of P. cyclohexanicum TA-12 and related species. Based on the 16S rRNA gene sequences of strain TA-12, various propionibacteria and other related groups. Reproduced from Kusano et al. (1997), with permission.

Figure 1.22. Unrooted phylogenetic tree showing the positions of the test and reference strains. The tree is based on the comparison of 16S rRNA sequences, as a result of which Arachnia propionica was reclassified as Propionibacterium propionicus. The arrow indicates the estimated rooting point when Bacillus subtilis was used as a remotely related reference. Reproduced from Charfreitag et al. (1988), with permission.

Figure 2. An unrooted phylogenetic tree of oleosins. The oleosin numbers after the names of plants follow roughly the chronological appearance of their genes in the GCG data bank. The large and small shaded ovals denote the two seed oleosin isoforms. The large and small shaded rectangles represent the tapetum and pollen (male gametophytic) oleosins, respectively. The shaded circle indicates the female gametophytic oleosin.

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