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Table 2 Summary of engineered microorganisms for plastic degradation enhanced by surface adhesion

From: Engineered plastic-associated bacteria for biodegradation and bioremediation

Plastic

Host

Biocatalyst

Display system

Substrate

Degradation assay conditions

Degradation efficiency (productivity)

Reference

PET

E. coli PHL628

lsPETase

N-terminal fusion to CsgA

Commercial PET;

37% crystallinity

7 days, 30 °C

4.79%a

(0.29–0.33 g/L TA)

Zhu et al. [55]

Wastewater bottle microplastics; 28% crystallinity

7 days, 30 °C

7.43%a

Wastewater bottle microplastics; 28% crystallinity

7 days, 30 °C, 0.02% STS

9.10%a

PET

E. coli BL21(DE3)

lsPETase

N-terminal fusion to FadL;

C-terminal fusion to hydrophobin TrHFBII

Wastewater bottle films (crystallinity not reported)

7 days, 37 °C (media supplemented on day 4)

Not reported

(0.30–0.35 g/L TA)

Jia et al. [56]

PET

Pichia pastoris

lsPETase

N-terminal fusion to GCW51;

Co-display of TrHFBI via N-terminal fusion to GCW61

Commercial film;

45% crystallinity

18 h, 30 °C

3.20%b

Chen et al. [57]

Commercial film;

6% crystallinity

18 h, 30 °C

55.00%b

PET

E. coli BL21(DE3)

FAST-PETase

N-terminal fusion to YfaL

Amorphous PET from

24 h, 30 °C

6.96%b

Hu and Chen [58]

Co-display with INP-cp52k

Commercial PET bottles

9.47%b

Co-display with INPNC-mfp-3

15.73%b

PCL

E. coli BL21(DE3)

Dh3

n/a (biocatalysts secreted)

1% w/v PCL beads

5 days, 37 °C

 < 40%c

Howard and McCarthy [59]

Dh3 and DgcC

40–60%c

Dh3 and WspR

40–60%c

  1. STS sodium tetradecyl sulfate, TA terephthalic acid, INPNC truncated form of ice nucleation protein containing the N- and C-terminal portions
  2. aDegradation rate based on TA and MHET production
  3. bDegradation rate measuring TA, MHET and BHET production over time
  4. cWeight loss using an inoculated media control with PCL beads