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Table 2 ROC analysis of activities in lysates ( n = 30)

From: Comparison of activity indexes for recognizing enzyme mutants of higher activity with uricase as model

Candidate pairs

Ratios after purification

Ratio by AC

AUC by AC

Ratio by SA

AUC by SA

A-B

1.37

1.07

0.559

1.19

0.799

B-C

1.58

1.54

0.895

1.56

0.985

A-C

2.15

1.67

0.921

1.82

1.000

C-D

1.90

5.45

1.000

5.60

1.000

B-D

3.00

8.48

1.000

8.60

1.000

A-D

4.10

9.09

1.000

9.92

1.000

  1. Based on error propagation, the experimental ratios in pairs had CVs about 20%. SA: specific activity; AC: activity concentration.