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Phylogenetic relationship between PRH proteins and PAPS reductase proteins. Microbial PAPS reductase sequences and the homologous central sequence of PRH-19, PRH-26, and PRH-43 (residues 89–353 with respect to PRH-19) were aligned using pileup, and the phylogenetic distances were identified with phylip and plotted as a phylogenetic tree.
