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Fig. 6 | Genome Biology

Fig. 6

From: Comparative genomics reveals the distinct evolutionary trajectories of the robust and complex coral lineages

Fig. 6

Phylogenetic analysis resolves the robust coral ATP phosphoribosyltransferases from their fungal and Symbiodinium homologues. ATP phosphoribosyltransferase proteins catalyse the first step in the histidine biosynthetic pathway, but the robust coral sequences are clearly resolved from those of representatives of other kingdoms of life in phylogenetic analyses. IQ-TREE was applied to generate the unrooted tree shown and automatic model selection chose LG + G4 as the best model. Numbers on nodes represent UFboot values based on 1000 iterations. Branch lengths indicate the expected number of amino acid substitutions per site. It is clear that robust coral proteins form a tight clade closest to fungal proteins, whereas proteins derived from Symbiodinium strains that are endosymbiotic with robust corals were most similar to those from other Symbiodinium isolates. In the case of Symbiodinium strains, the host species is indicated in parentheses, the exception being S. kawagutii, which, although isolated in association with the coral Montipora verrucosa (C), is now thought to be non-symbiotic [127]

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