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Table 3 Descriptive statistics for Ω and Z scores for the DS362 dataset

From: Exploring protein structural dissimilarity to facilitate structure classification

SCOP Level

SD

SD Norm

VMR

CE

TPR

FPR

 

Z

Ω

Z

Ω

Z

Ω

Z

Ω

Z

Ω

Z

Ω

Class

0.75

0.17

0.07

0.12

0.21

0.03

0.27

0.19

0.88

0.87

0.31

0.35

Fold

1.62

0.14

0.16

0.09

0.70

0.03

0.43

0.18

0.75

0.69

0.74

0.46

Super-family

0.93

0.16

0.10

0.10

0.24

0.04

0.26

0.22

0.74

0.70

0.35

0.34

Family

2.21

0.18

0.22

0.11

0.78

0.09

0.35

0.46

0.17

0.81

0.00

0.07

  1. Statistics for Ω and Z scores for the protein pairs sharing a common SCOP level. The true positive rates (TPR) and false positive rates (FPR) are calculated based on the threshold range derived from the respective normalised Mean ± SD. Variance to Mean Ratio (VMR) and Coefficient of Error (CE) statistics give an estimate of how general the thresholds could be and how accurate the suggested thresholds are, respectively. Bold-face type indicates where Ω performs better than Z score in assigning pairs to a common Fold and Family. SD Norm = normalised standard deviation.