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Figure 2 | Biology Direct

Figure 2

From: Proteorhodopsin genes in giant viruses

Figure 2

Phylogenetic tree of the rhodopsin superfamily. Branches with bootstrap support less than 50 were collapsed. Several large clades are shown by triangles with the number of the collapsed branches shown within the triangle. Numbers in parentheses represent number of environmental sequences clustered into the branch. Each sequence is denoted by the corresponding species abbreviation and GenBank Identification (GI) number. Abbreviations: OLPV, Organic Lake Phycodnavirus; OLPV2, Organic Lake Phycodnavirus 2; env, environmental sequence (marine metagenome); Ba, Actinobacteria; Bc, Cyanobacteria; Bd, Deinococcus-Thermus; Bh, Chloroflexi; Bp, Proteobacteria; Cyasp, Cyanothece sp. PCC 7424; Ktera, Ktedonobacter racemifer DSM 44963; Metsp, Methylobacterium sp. 4–46; Pansp, Pantoea sp. Sc1; Pseps, Pseudomonas psychrotolerans L19; Rubxy, Rubrobacter xylanophilus DSM 9941; Sphsp, Sphingomonas sp. PAMC 26617; Trura, Truepera radiovictrix DSM 17093. Expanded subtrees for Proteorhodopsin group I and II are shown in Additional file 4.

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