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Table 3 Optically pure AC and BD were obtained by editing wild strains

From: Mechanism of microbial production of acetoin and 2,3-butanediol optical isomers and substrate specificity of butanediol dehydrogenase

Strains

Methods

Product

Enantiomeric excess (%)

Reference

S. marcescens MG1

Deletion of slaC and gidA

3R-AC

/

(8)

K. pneumoniae

Deletion of budC and acoABCD

3R-AC

96

(9)

C. glutamicum CGR6

Block the reduction of AC to BD, weaken the TCA cycle and insert more alsSD operon copies into the host genome

3R-AC

95

(10)

L. lactis

Deletion of ldh, ldhB, ldhX, pta, adhE, and butBA; and overexpression of the lactose-utilization pathway

3S-AC

/

(11)

S. marcescens

Deletion of slaC and overexpression of bdhA

(2R,3R)-2,3-BD

/

(12)

Enterobacter cloacae sp.

Deletion of ptsG, ldh, frdA, adh and overexpression of Galp

(2R,3R)-2,3-BD

> 97.5

(13)

P. polymyxa ZJ-9

Deletion of DudA

(2R,3R)-2,3-BD

99

(14)

K. oxytoca ΔldhA ΔpflB

Deletion of budC and expression of bdhA from P. polymyxa

(2R,3R)-2,3-BD

92

(15)

S. cerevisiae

Deletion of PDC and overexpression of MTH1, cytoILV2, ALSD and BDH

(2R,3R)-2,3-BD

100

(16)

B. licheniformis ΔbudC

Deletion of budC

(2R,3R)-2,3-BD

99.4

(17)

B. licheniformis Δgdh

Deletion of gdh

meso2,3-BD

99.2%

(17)

B. subtilis

Deletion of bdhA, acoA, pta, Idh, and overexpression of budC, alsS, alsD

meso2,3-BD

100

(18)