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Table 4 Statistical Significance of DaliLite Z score and Ω in identifying different SCOP structural levels for the DSF600 dataset

From: Exploring protein structural dissimilarity to facilitate structure classification

SCOP Level Mean Mean Norm t-test F-test Max Min
  Z Ω Z Ω p-value 95% p-value 95% Z Ω Z Ω
Class 2.96 1.11 0.12 0.64 10-16 10-16 9.80 1.65 2.00 0.16
Fold 5.01 1.03 0.39 0.30 10-10 10-5 9.60 1.57 2.00 0.80
Super-family 4.79 1.05 0.24 0.54 10-11 10-2 13.00 1.33 2.20 0.72
Family 13.10 0.40 0.40 0.30 10-16 10-1 29.60 1.32 2.00 0.00
  1. The statistical significance of difference in the mean of the normalised coefficient of dissimilarity (Ω) and DaliLite Z score in terms of Student's two-sided t-test at 95% confidence interval. The small p-values from the t-test indicate a significant difference in the mean value of the two scores for the respective shared SCOP level. The p-values for the F-test reported at 95% confidence interval indicate that the two-sided t-test is valid based on the assumption of equality of the two sample variances. Mean Norm = normalised mean.