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Table 1 Lactate dehydrogenase ( LDH), phosphotransacetylase (PTA) and acetaldehyde dehydrogenase (ADH) activity of K. pneumoniae parent strain (KG1) and its mutants, the values represent mean ± SD

From: Effect of the inactivation of lactate dehydrogenase, ethanol dehydrogenase, and phosphotransacetylase on 2,3-butanediol production in Klebsiella pneumoniae strain

Strains

LDH activity

PTA activity

ADH activity

U/mg protein

Percentage of wild type

U/mg protein

Percentage of wild type

U/mg protein

Percentage of wild type

KG1

4.66 ± 0.23

100

2.42 ± 0.04

100

2.67 ± 0.22

100

ΔldhA

0.56 ± 0.03

12.02

1.69 ± 0.05

69.83

2.75 ± 0.21

102.99

ΔadhE

4.35 ± 0.31

93.35

1.73 ± 0.03

71.48

0.06 ± 0.01

2.24

Δpta

4.56 ± 0.25

97.80

0.04 ± 0.01

1. 65

2.29 ± 0.15

85.76