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. 2022 Sep 7;12(39):25528–25548. doi: 10.1039/d2ra03326g

Metabolic flux methods applied to different organisms. Isotopic tracers used in the experiments, techniques and software for data analysis are reported as well. When authors did not use “omics” software to analyse data the abbreviation “ns” is reported for “not specified”a.

Flux methods & isotopomers Organisms Techniques Software data analysis Ref.
13 C-MFA
80% unlabelled Glc and 20% [U-13C] Glc S. cerevisiae, S. bayanus var. uvarum, S. exiguus, S. servazzii, Z. rouxii, S. kluyveri K. thermotolerans K. lactis K. marxianus var. marxianus, P. angusta, D. hansenii, P. sorbitophila, C. tropicalis, Y. lipolytica GC-MS METAFoR 38
[1-13C] Glc or a mix of 20% [U-13C] Glc and 80% unlabelled Glc E. coli GC-MS METAFoR 39
5 mM Glc + 5 mM [2-13C] acetate, 5 mM [1-13C] Glc + 5 U/L insulin and 5 mM Glc + [3-13C] pyruvate Rat hearts GC-MS along with 13C-NMR (400 MHz) ns 40
0%, 0.5%, 1%, 2% and 10% of [1-13C] Glc mixture C. glutamicum GC-C-IRMS MATLAB 41
13C sodium acetate; 13C sodium hydrogen carbonate Chlamydomonas reinhardtii GCxGC-TOF-MS MetMax and GMD 36
[1-13C] Glc; 99% [6-13C] Glc C. glutamicum MALDI-TOF MS 42
[1,2-13C] Glc, [1,6-13C] Glc E. coli GC-MS METRAN 43
[5-13C] glutamine and [U-13C] glutamine Brown adipocyte cells GC-MS METRAN and ISA 34
[1-13C] Glc C. glutamicum GC-MS OpenFLUX 44
[1-13C] Glc, or a mix of 20% [U-13C] Glc and 80% naturally labelled Glc E. coli, B. subtilis GC-MS SUMOFLUX, INCA 45
25 mM 1 : 1 mixture of [U-13C] Glc and [1-13C] Glc A549 lung carcinoma cell line GC-MS METRAN 35
2 g L−1 NaH13CO3 and 5 g L−1 Glc (U-13C6 or 1-13C1) Synechocystis sp. PCC 6803 GC-MS MATLAB 46
20% [1,3-13C]-glycerol and 80% unlabeled glycerol Pichia pastoris X-33 strain GC-MS OpenFLUX 37
[1,2-13C] Glc Co-culture of E. coli Δpgi and Δzwf GC-MS METRAN 47
[l-13C] Glc and [U-13C] ethanol S. cerevisiae strain CEN.PK-113.7D LC-MS MATLAB 48
500 g L−1 1 : 1 mixture of [1-13C] Glc and [U-13C] Glc E. coli strain WYK050 LC-MS/MS MATLAB 49
A mixture of 80% [1-13C] Glc and 20% [U-13C] Glc B. subtilis strain BSB168 trp+ LC-MS/MS 13CFLUX 50
[1-13C] Glc and [U-13C] Glc E. coli strain K-12 MG1655 LC-MS/MS MATLAB and INCA 51
[l-13C] Glc Corynebacterium glutamicum 1H-13C NMR ns 52
[U-13C] Glc 10% and natural labeled Glc 90% B. subtilis 1H-13C NMR ns 53
13.9 mM of a mixture of either 20% [U-13C]-Glc and 80% [1-13C]-Glc or [U-13C]-Xyl and 80% [1-13C]-Xyl E. coli Pzwf1.1, Pzwf1.2, Pzwf1.3, Pzwf1.4 and E. coli Pzwf1, Pzwf2, Pzwf3, Pzwf4 1H-13C NMR influx_s 54
[1,2-13C] Glc Mammalian cells 1H-13C NMR coupled with GC-MS ns 55
90% unlabelled Glc and 10% uniformly labeled [U-13C] Glc Synechocystis 1H-13C NMR coupled with GC-MS ns 56
[13C2] glycine, [13C3] serine and [3-13C] serine A. gossypii B2 GC-MS, LC-MS, and NMR OpenFLUX 57
[U-13C] Glc 10%, [1-13C] Glc 40% and 50% unlabelled Glc Chinese Hamster Ovary (CHO) cells 2D [13C, 1H] COSY 13C-Flux 58
50 mM [1-13C] Glc Actinobacillus succinogenes GC-MS, 1H-13C NMR 13C-Flux 59
20% [U-13C] Glc and 80% unlabelled Glc Escherichia coli 3D TOCSY-HSQC ns 60
FBA
[1-13C] Glc Geobacillus thermoglucosidasius M10EXG Based on GC-MS data SimPheny Software from Genomatica 61
Chinese Hamster Ovary (CHO) cells Based on 2D [13C, 1H] COSY data 13C-Flux 58
13 C-INST-MFA
[1,6-13C] Glc Rat brain (in vivo) 13C-NMR ns 62
a

Ns = not specified, Glc = glucose; GC-C-IRMS = gas chromatography-combustion-isotope ratio mass spectrometry; GCxGC-TOF-MS = two-dimensional gas chromatography coupled to time-of-flight mass spectrometry; GMD = Golm metabolome database; Glc = glucose; Xyl = xylose.