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Table 2 Production of 3HP- and 2HB-based polymers

From: Versatile aliphatic polyester biosynthesis system for producing random and block copolymers composed of 2-, 3-, 4-, 5-, and 6-hydroxyalkanoates using the sequence-regulating polyhydroxyalkanoate synthase PhaCAR

Monomer supplying genes

Entry

Precursor concentration (g L−1)a

Cell dry weight (g L−1)

Polymer production (g L-1)

Monomer composition (mol%)

Mw (× 105)

Mn (× 105)

Mw/Mn

2HB

3HB

3HP

4H2MB

5HV

6HHx

pct, alkK

15

3HP 1.0

4H2MB 1.0

3.53 ± 0.23

0.18 ± 0.05

–

–

100

–

–

–

2.2

1.0

2.3

pct, alkK

16

3HP 1.0

5HV 1.0

3.20 ± 0.07

0.19 ± 0.04

–

–

100

–

–

–

3.4

1.4

2.4

pct, alkK

17

3HP 1.0

6HHx 1.0

3.06 ± 0.06

0.19 ± 0.01

–

–

100

–

–

–

2.7

1.2

1.6

pct, alkK

18

2HB 2.5

3HB 2.5

3.18 ± 0.05

0.40 ± 0.04

32.5

67.5

-

–

–

–

2.8

0.9

3.0

pct, alkK

19

2HB 2.5

3HP 1.0

2.61 ± 0.13

0.16 ± 0.02

4.2

-

95.8

–

–

–

1.9

1.2

1.6

pct, alkK

20

2HB 2.5

4H2MB 1.0

2.46 ± 0.24

ND

–

–

–

–

–

–

–

–

–

pct, alkK

21

2HB 2.5

5HV 1.0

2.31 ± 0.20

ND

–

–

–

–

–

–

–

–

–

pct, alkK

22

2HB 2.5

6HHx 1.0

2.47 ± 0.03

ND

–

–

–

–

–

–

–

–

–

  1. a The concentrations of precursors are given as the sodium salts