Figure 6

Maximum-Likelihood trees of ancestral NCLDV genes involved in nucleotide metabolism. A, Ribonucleoside diphosphate reductase small subunit. B, Ribonucleoside diphosphate reductase large subunit. Branches with bootstrap support less than 0.5 were collapsed. For each sequence, the species name abbreviation and the gene identification numbers are indicated; env stands for environmental sequences. Species abbreviations:CroV, C. roenbergensis virus; Moumou, Moumouvirus; OLPV1, Organic Lake phycodnavirus 1; OLPV2, Organic Lake phycodnavirus 2; Phaglob, P. globosa virus; Crypa, Cryptosporidium parvum Iowa II; Cyphe, Cyprinid herpesvirus 3; Dicdi, Dictyostelium discoideum AX4; Ectsi, Ectocarpus siliculosus 1; Emihu, Emiliania huxleyi virus 86; Felsp, Feldmannia sp virus; Leibr, Leishmania braziliensis; Musdo, Musca domestica salivary gland hypertrophy virus; Parte, Paramecium tetraurelia strain d4-2; Phatr, Phaeodactylum tricornutum CCAP 1055/1; Plavi, Plasmodium vivax Sal-1; Thaps, Thalassiosira pseudonana CCMP1335; Trybr, Trypanosoma brucei; Vibha, Vibrio harveyi 1DA3. Taxa abbreviations: Bp, Proteobacteria; E8, Stramenopiles; Ea, Amoebozoa; Ec, Alveolata; Ek, Kinetoplastida; k1, Herpesvirales; q2, Coccolithovirus; q3, Phaeovirus; zh, unclassified dsDNA viruses.