Table 1 Substrate specificity

From: Amide compound synthesis by adenylation domain of bacillibactin synthetase

Substrate

Specific activity (units mg−1)

Relative activity (%)

DHB (2,3-dihydroxybenzoic acid)

0.00574

100

2-Hydroxybenzoic acid

0.00385

67

3-Hydroxybenzoic acid

0.00132

23

4-Hydroxybenzoic acid

ND

 

Benzoic acid

0.00115

20

3-Methylbenzoic acid

ND

 

4-Methylbenzoic acid

ND

 

3-Aminobenzoic acid

ND

 

4-Aminobenzoic acid

ND

 

3-Cyanobenzoic acid

ND

 

4-Cyanobenzoic acid

ND

 

3-Nitorbenzoic acid

ND

 

4-Nitorbenzoic acid

ND

 

4-Chlorobenzoic acid

ND

 

2,6-Difluorobenzoic acid

ND

 

Phthalic acid

ND

 

Cinnamic acid

ND

 

Propionic acid

ND

 

Butyric acid

ND

 

Pentanoic acid

0.00060

10

Hexanoic acid

ND

 

Heptanoic acid

0.00041

7.1

Octanoic acid

0.00047

8.2

Nonanoic acid

ND

 
  1. Abbreviation: ND, not determined.
  2. The reactions were carried out in triplicate with measurement of acid-dependent AMP formation as described in the Materials and methods section.