Table 1

Pairwise matrix of divergence rates among GPx groups based on the JTT model^a

Group^b

1

2

3

4

5

6

7

8

9

10

11

1. Trematode GPx

0.80 ± 0.10

1.73 ± 0.17

1.61 ± 0.18

1.41 ± 0.17

1.29 ± 0.16

1.30 ± 0.15

1.81 ± 0.25

1.75 ± 0.22

2.11 ± 0.35

2.22 ± 0.35

2.80 ± 0.50

2. Turbellaria GPx

2.37 ± 0.32

2.06 ± 0.24

2.08 ± 0.24

1.78 ± 0.19

1.74 ± 0.17

2.20 ± 0.29

2.07 ± 0.22

2.52 ± 0.37

2.83 ± 0.38

3.60 ± 0.54

3. Vertebrate GPx4

1.50 ± 0.20

1.78 ± 0.21

1.74 ± 0.23

1.63 ± 0.18

2.08 ± 0.27

1.88 ± 0.22

2.55 ± 0.41

2.53 ± 0.37

3.32 ± 0.53

4. Insect GPx

1.19 ± 0.13

1.37 ± 0.17

1.29 ± 0.15

1.93 ± 0.28

1.75 ± 0.21

2.21 ± 0.30

2.44 ± 0.37

2.68 ± 0.37

5. Nematode GPx4

0.59 ± 0.09

1.00 ± 0.12

1.65 ± 0.24

1.56 ± 0.20

2.21 ± 0.36

2.23 ± 0.39

2.58 ± 0.44

6. Plant GPx

0.56 ± 0.06

1.28 ± 0.18

1.36 ± 0.16

2.06 ± 0.32

2.32 ± 0.37

2.63 ± 0.43

7. Protozoa GPx

0.33 ± 0.05

1.82 ± 0.23

2.68 ± 0.49

2.64 ± 0.43

2.98 ± 0.55

8. Fungus GPx

1.00 ± 0.14

2.26 ± 0.36

2.34 ± 0.37

2.97 ± 0.50

9. Vertebrate GPx1

0.47 ± 0.07

1.37 ± 0.18

2.15 ± 0.33

10. Vertebrate GPx 3

0.31 ± 0.04

2.04 ± 0.29

11. Nematode GPx3

0.55 ± 0.08

^aDistance values are presented as mean ± standard error computed by bootstrapping of 1,000 replicates. Bold-face and regular letters indicate intra-group and inter-group rates, respectively.

^bThe proteins were categorized into groups by considering primary structures and taxonomical positions of donor organisms.

Bae et al. BMC Evolutionary Biology 2009 9:72   doi:10.1186/1471-2148-9-72