Figure 1.

Comparison of area ratios of monoisotopic peaks to their corresponding fully-labeled peaks with different amounts of ¹³C-internal standards. Absolute values of log₁₀ (¹²C/¹³C) are represented with a heat map. Abbreviations: 3PGA, 3-phosphoglycerate; Acetyl-CoA, acetyl coenzyme A; ADP, adenosine diphosphate; ADP-Glc, ADP- glucose; AMP, adenosine monophosphate; ATP, adenosine triphosphate; CMP, cytosine monophosphate; CTP, cytosine triphosphate; DHAP, dihydroxyacetone phosphate; Disaccharide-P, disaccharide phosphate; F1P, fructose 1-phosphate; F6P, fructose 6-phosphate; FAD, flavin adenine dinucleotide; FBP, fructose bisphosphate; FMN, flavin mononucleotide; G1P, glucose 1-phosphate; G6P, glucose 6-phosphate; GAP, glyceraldehyde 3-phosphate; GDP, guanosine diphosphate; GMP, guanosine monophosphate; GTP, guanosine triphosphate;HMBPP, 4-Hydroxy-3-methyl-but-2-enyl pyrophosphate; IMP, inosine monophosphate; IPP, isopentenyl pyrophosphate; DMAPP, dimethylallyl pyrophosphate; MEP, 2-C-methylerythritol 4-phosphate; Mn6P, mannose 6-phosphate; NAD, nicotinamide adenine dinucleotide; NADP, nicotinamide adenine dinucleotide phosphate; PEP, phosphoenolpyruvate; R1P, ribose 1-phosphate; R5P, ribose 5-phosphate; Ru5P, ribulose 5-phosphate; RuBP, ribulose bisphosphate; S7P, sedoheptulose 7-phosphate; TMP, thymidine monophosphate; UDP-Glc, UDP-glucose; UMP, uridine monophosphate; UTP, uridine triphosphate; XMP, xanthosine monophosphate.