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Table 1 Correlation Coefficients for PSI and Z-score

From: SABERTOOTH: protein structural alignment based on a vectorial structure representation

 

SABERT. (EC profile)

MAMMOTH

MAMMOTH mult

DaliLite

TM-align

CE

SHEBA

SABERTOOTH

1

0.79

0.84

0.86

0.85

0.61

0.81

MAMMOTH

0.84

1

0.85

0.84

0.81

0.64

0.80

MAMMOTH-mult

0.84

1.00

1

0.90

0.89

0.63

0.85

DaliLite

0.90

0.87

0.87

1

0.94

0.67

0.89

TM-align

0.53

0.59

0.59

0.62

1

0.66

0.88

CE

0.57

0.64

0.64

0.62

0.52

1

0.63

  1. Correlation coefficients of rPSI values over the test set for the different algorithms are shown above the diagonal. The highest value of 0.94 between DaliLite and TM-align proves the very high level of agreement in the results. SABERTOOTH reaches 0.86 and 0.85 correlation with DaliLite and TM-align, respectively.
  2. The correlation of rPSI values translates to the Z-score as shown below the diagonal. MAMMOTH's Z-score obviously takes advantage of its more sophisticated Z-score fitting procedure using extreme value distribution methods to determine mean value and standard deviation of the PSI as functions of chain length. SHEBA does not output comparable Z-scores.