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Table 2 Split ratios of ATP-consuming fluxes

From: A metabolite-centric view on flux distributions in genome-scale metabolic models

Consuming fluxes

Reaction/Enzyme

Pathway/Product

Ratio

Biomass (incl. GAM)

 

66.39%

phosphofructokinase

glycolysis

8.77%

ATP maintenance requirement

NGAM

4.52%

adenylate kinase

AMP→ADP

2.73%

acetyl-CoA carboxylase

fatty acids

2.68%

AICAR biosynthesis from PRPP (5 reactions)

purines

2.67%

glutamine synthetase

Gln

2.13%

aspartate kinase

Thr, Met, Lys, peptidoglycans

1.28%

PRPP synthetase

pentose phosphate pathway

1.11%

nucleoside-diphosphate kinase

GTP

0.92%

carbamate kinase

pyrimidines, Arg, polyamines

0.75%

homoserine kinase

Thr

0.65%

nucleoside-diphosphate kinase

UTP

0.49%

shikimate kinase

shikimate pathway

0.46%

UMP kinase

pyrimidines

0.44%

acetylglutamate kinase

Arg, polyamines

0.40%

argininosuccinate synthase

Arg

0.35%

adenylyl-sulfate kinase

sulfur metabolism

0.30%

sulfate adenyltransferase

sulfur metabolism

0.30%

guanylate kinase

purines

0.29%

GMP synthase

purines

0.29%

asparagine synthetase

Asn

0.29%

glutamate 5-kinase

Pro

0.26%

cytidylate kinase

pyrimidines

0.20%

CTP synthase (glutamine)

pyrimidines

0.19%

glucose-1-phosphate adenylyltransferase

glycogen

0.19%

nucleoside-diphosphate kinase

CTP

0.17%

6 reactions in cell wall biosynthesis

peptidoglycans

0.17%

7 reactions in lipopolysaccharide biosynthesis

lipopolysaccharides

0.13%

phospholipid export (2Ă—3 reactions)

phospholipids

0.11%

ATP phosphoribosyltransferase

His, purines

0.11%

  1. Total flux: 69.7 mmol gDW−1 h−1. Ratios below 0.05% not shown.
  2. Abbreviations: AICAR – 5-aminoimidazole-4-carboxamide ribotide, Arg, Asn, … – biosynthesis of L-amino acids, PRPP – phosphoribosyl pyrophosphate.