Table 2 Characterisation of the prenylated CDPs produced in E. coli.

From: Reprogramming Escherichia coli for the production of prenylated indole diketopiperazine alkaloids

Compound

Characterization

#

Enzyme combination

Amount of lyophilised powder (culture volume) and purity of prenylated CDP

NMR structure

4

CDPS74 NotF

17 mg (1 l); 95%

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5

CDPS74 FtmPT1

26 mg (1 l); 95%

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6

CDPS68 CdpC3PT

RT = 15.1 min§

2 mg (800 ml); 74%

7

CDPS68 CdpC3PT

RT = 18.5 min§

2.5 mg (800 ml);

no contaminant detected

8

CDPS68 CdpC3PT

RT = 26.1 min§

4.5 mg (800 ml); 95%

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9

CDPS14 AnaPT

6 mg (800 ml); 88%

10, 11

CDPS14 CTrpPT

3.8 mg (450 ml); 82%

  1. Amounts were determined by weighing after lyophilisation of the HPLC fractions; purity was evaluated from HPLC chromatograms recorded at 220 nm.
  2. NMR structures are given based on our data.
  3. §When several products were purified from one enzyme combination, the retention time (RT) observed during HPLC purification is indicated for each compound.