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Fig. 6 | BMC Genomics

Fig. 6

From: Primordial origin and diversification of plasmids in Lyme disease agent bacteria

Fig. 6

Plasmid super-groups revealed by plasmid partition gene clusters. The midpoint-rooted gene tree (center) is based on a 1327 amino acid long concatenated alignment of sequences of four plasmid partition proteins (including PFam57/62, Pfam50, PFam32, and Pfam49). This tree shows a monophyly of all cp32 + cp9 plasmids (left-side, shades of yellow in outer ring). Other monophyletic plasmid super-groups separated by similarly deep branches include (counter-clockwise from bottom) lp28–4/lp28–2, cp26, lp54, lp25, lp28–8, lp28–5, lp28–3/lp28–6/lp36/lp38/lp56, lp28–7, and lp28–1/lp28–9. Plasmids not shown in the figure (lp5, lp17 and lp21) do not have a full set of all four partition genes. A web-interactive version of the tree is available at BorreliaBase website (under the “Replicons” tab)

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