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Figure 6 | Genome Biology

Figure 6

From: Lateral gene transfer and ancient paralogy of operons containing redundant copies of tryptophan-pathway genes in Xylellaspecies and in heterocystous cyanobacteria

Figure 6

Organization of trp-pathway genes in X. fastidiosa and its nearest phylogenetic neighbors. The position of the organisms indicated on a 16S rRNA subtree is shown at the far left. To enhance the presentation, the trp-gene acronyms are shortened. Thus, trpAa is shown as Aa, etc. Intergenic spacing is indicated. dmt refers to a putative DNA methyltransferase. TrpAa in Nitrosomonas europeae and trpC in Bordetella parapertussis are located in other chromosomal positions, unlinked to other trp-pathway genes. X. fastidiosa and N. europeae, but not the other organisms shown in the figure, possess truA (encoding tRNA pseudouridine synthase A) upstream of trpC. truA and trpC are translationally coupled with 31-bp and 105-bp overlaps in X. fastidiosa and N. europeae, respectively. The gene organizations shown for a given organism is identical to the other organisms shown in parentheses as follows: Ralstonia metallidurans (R. solanacearum), Burkholderia fungorum (B. pseudomallei, B. mallei), and B. parapertussis (B. pertussis, B. bronchiseptica). R. solanacearum, in addition to the genes shown, has adjacent paralogs of trpB and trpD located on a large plasmid. The trpAaAbBD and trpCEbEa operons of the X. fastidiosa 9a5c genome correspond to gene numbers XF0210-XF0213 and XF1374-XF1376, respectively.

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Genome Biology

ISSN: 1474-760X

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