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. 2018 May 24;12(8):1994–2010. doi: 10.1038/s41396-018-0150-9

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© International Society for Microbial Ecology 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 3 — Comparison of six plasmid-located and six chromosomal photosynthesis gene clusters from Rhodobacteraceae. Selection of 12 among the 48 PGCs that were analyzed in the current study (see Tab. S4). Genes are colored according to biological categories: green, bacteriochlorophyll biosynthesis (bch); orange, carotenoid biosynthesis (crt); red, light-harvesting and photosynthesis reaction center (puf); dark blue, cytochrome c₂ (cycA); gray, additional conserved genes of the PGC; white, non-conserved genes. The positioning of plasmid modules in the photosynthesis gene cluster, which are shown in yellow (DnaA-like I) and light blue (RepB-III), is highlighted by star-shaped icons. Identical gene order between PGCs is indicated by vertical gray shaded areas. Two conserved parts of the chromosomal PGC from Rhodovulum sulfidophilum are separated by a DNA stretch of 241-kb. Plasmid-located PGCs are highlighted in yellow and by the suffix [P] (color figure online)