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Table 1 Effect of PrsA, dlt mutation and depletion of HtrA proteases on secretion of heterologous proteins studied.

From: Production of proteins in Bacillus subtilis can be improved by engineering components affecting posttranslocational protein folding and degradation

Protein and origin

PrsA dependency

PrsA Over- expression

Dlt mutation

Depletion of HtrA protease

α-amylase (B. stearothetmophilus)

yes(+)

no effect

β-glucanase (B. licheniformis)

no

 

no effect

 

Penicillinase (B. licheniformis)

no

 

no effect

no effect

Pneumolysin (S. pneumoniae)

yes(+)

Diphteria toksoid (C. diphteriae)

no

no effect

  

Staphylokinase (S. aureus)

yes(-)

   

Pectinase (E. carotovora)

yes(+)

no effect

Pectin methylesterase (E. chrysanthemi)

no

 

no effect

no effect

β-lactamase (E. coli)

yes(+)

no effect

 

Pertussis toxin S1 (B. pertussis)

no

Pertussis toxin S4 (B. pertussis)

no

   
  1. yes(+), positive dependency, yes(-) negative dependency, ↑ increase in secretion and ↓ decrease in secretion.