Table 1 Comparison of general genome features of three Amazon Thaumarchaeota genomes and their phylogenetically closest members

Genome size, bp

934,797

1,256,699

1,047,532

1,636,125

1,620,156

1,232,128

DNA coding region, bp

878,769

1,159,316

970,632

1,500,929

1,499,274

1,164,105

G + C content, mol%

33.15

37.82

37.99

42.25

41.00

33.16

Total RNA genes, n

47

50

30

46

48

47

tRNA genes, n

44

43

27

41

43

42

rRNA genes, n

0

3

1

3

3

3

Other RNA genes, n

3

4

2

2

2

2

Total number of genes, n

1453

1771

1454

1955

1924

1516

Total CDSs, n (%)

1406 (96.77)

1721 (97.18)

1424 (97.94)

1909 (97.65)

1876 (97.51)

1469 (96.90)

With predicted function, n (%)

920 (63.32)

1119 (63.18)

944 (64.92)

1233 (63.07)

1212 (62.99)

985 (64.97)

Predicted with COG database, n (%)

583 (40.12)

791 (44.66)

660 (45.39)

1006 (51.46)

998 (51.87)

850 (56.07)

Predicted with TIGRFAMs database, n (%)

333 (22.92)

402 (22.70)

343 (23.59)

456 (23.32)

463 (24.06)

413 (27.24)

Encoding signal peptides, n (%)

18 (1.24)

51 (2.88)

36 (2.48)

81 (4.14)

89 (4.63)

40 (2.64)

Encoding transmembrane proteins, n (%)

231 (15.90)

319 (18.01)

255 (17.54)

428 (21.89)

424 (22.04)

289 (19.06)

Without predicted function, n (%)

486 (33.45)

602 (33.99)

480 (33.01)

676 (34.58)

644 (34.51)

484 (31.93)

In internal clusters, n (%)

381 (26.22)

457 (25.80)

234 (16.09)

149 (7.62)

137 (7.12)

66 (4.35)

 Isolation source, habitat

Seawater

Seawater

Freshwater

Geothermal hot spring

Wastewater

Seawater

Atlantic Ocean

Atlantic Ocean

Brazil

Russian

China

Pacific Ocean

 Thaumarchaeota group

1.1a

1.1a

1.1a

1.1a

1.1a

1.1a

 Species

Nitrosopelagicus sp.

Nitrosotenuis sp.

Nitrosotenuis sp.

Nitrosotenuis uzonensis

Nitrosotenuis cloacae

Nitrosopelagicus brevis