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Table 3 Microbial alkane gas production via amino acid biosynthesis and/or degradation routes

From: Engineering nature for gaseous hydrocarbon production

Alkane production (mg/L)

Terminal Enzyme

Propane

Butane

Isobutane

Comments

KdcA-dependent pathway in E. coli (valine biosynthesis) [10]

 ADOWT

0.091

na

na

E. coli BW25113(DE3)Δ13 strain

 ADOI127G

0.267

na

na

E. coli BW25113(DE3)Δ13 strain

KdcA-dependent pathway in E. coli (amino acid catabolism) [5, 6]

 CvFAPG462I

7.8

7.6

48.7

Endogenous amino acids

 CvFAPG462I

109.7

142

112.1

30 mM amino acids supplied

KdcA-dependent pathway in Halomonas (amino acid catabolism) with added amino acids [5, 6]

 CvFAPG462I

8.0

0.11

0.65

Plasmid-borne construct

 CvFAPG462I

2.7

0.04

0.29

Genomic integrated construct

CoA-dependent pathways in E. coli (amino acid catabolism)

[5]

 ADOA134F

0.96

0.03

0.01

Endogenous amino acids

 CvFAPG462I

0.98

0.09

0.04

Endogenous amino acids

  1. In vivo studies determined in the presence or absence of supplemental amino acids (30 mM)
  2. na not applicable