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Table 3 Z-scores for mixed alpha and beta class topologies in test set A: scores obtained for each topology for Blosum62, VT160_RA, and VTML200 matrices are shown in columns 2, 3, and 4

From: Fold-specific sequence scoring improves protein sequence matching

 

Z-score

Topology

Blosum62

VT160_RA

VTML200

Blosum62 combined

VT160_RA combined

    

Max z-score

Max % improvement

Max z-score

Max % improvement

3.10.20

2.13

2.36

2.17

2.40

2.03

2.39

1.51

3.10.100

3.01

3.67

3.21

5.52

50.48

5.57

51.77

3.10.120

2.78

2.85

2.65

4.14

45.17

4.13

44.83

3.10.129

1.06

1.06

1.11

1.26

13.65

1.14

3.03

3.10.130

2.26

2.62

2.31

4.58

74.78

4.55

73.84

3.10.180

1.62

1.70

1.64

2.58

51.77

2.58

51.89

3.30.30

2.70

3.07

2.75

3.70

20.80

3.75

22.31

3.30.70

2.38

2.73

2.41

3.71

35.56

3.70

35.54

3.30.420

0.14

0.27

0.29

0.29

1.15

0.30

3.54

3.30.428

2.35

2.84

2.47

3.18

11.93

3.26

14.70

3.30.465

2.03

2.11

2.02

2.77

31.30

2.77

31.20

3.30.505

2.52

2.91

2.71

3.13

7.45

3.21

10.27

3.30.1050

2.87

3.16

2.74

3.47

9.85

3.34

5.55

3.30.1520

2.37

2.78

2.48

2.86

2.77

2.82

1.47

3.40.20

3.42

3.81

3.46

4.55

19.33

4.55

19.21

3.40.33

3.05

3.36

2.94

4.90

45.88

4.92

46.64

3.40.109

0.72

0.91

0.29

1.49

64.71

1.46

60.88

3.40.140

4.38

4.79

4.48

5.13

7.03

5.19

8.38

3.40.718

0.42

1.00

0.81

2.75

175.14

2.76

176.14

3.40.980

2.79

3.27

2.85

3.75

14.65

3.81

16.45

3.40.1050

0.07

0.32

0.02

2.23

595.27

2.14

567.18

3.60.21

0.92

0.84

0.79

1.69

83.39

1.67

80.72

3.70.10

3.29

3.77

3.29

4.34

15.15

4.31

14.41

3.90.79

1.86

2.05

1.84

3.01

46.42

2.89

40.90

3.90.730

5.25

5.62

5.34

5.69

1.34

5.67

1.01

  1. Columns 5 and 6 show the maximum z-scores obtained and the maximum percentage improvements obtained when using Blosum62 combined with topology-based matrices. Columns 7 and 8 show the maximum z-scores obtained and the maximum percentage improvements obtained when using VT160_RA combined with topology-based matrices. Maximum percentage improvements are the improvements of combined topology-based matrices over the maximum z-score giving generic matrix for each topology. Only the topologies where z-score improvements were observed for both Blosum62 combined and VT160_RA combined matrices over all three of the generic matrices are shown.