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Table 2 Small-scale purification of β-gal and OPH-S5 based on two rounds of inverse transition cycling.

From: Expression and purification of ELP-intein-tagged target proteins in high cell density E. coli fermentation

A. β-galactosidase

   

Step

Specific activity (U/mg)

Purification fold

Yield (mg/L)

Clarified lysate

5096

1

 

Soluble contaminants

466

  

Purified precursor, before cleaving

76656

15

 

Purified product

135017

25.5

177

B. OPH-S5

   

Step

Specific activity (U/mg)

Purification fold

Yield (mg/L)

Clarified lysate

11

1

 

Soluble contaminants

1.2

  

Purified precursor, before cleaving

751

68

 

Purified product

1186

108

83