Table 1

Examples of anNET applications

Application
Ranges estimated
Notes

Check thermodynamic consistency
none
Check only once feasibility. For non-feasible systems, use the troubleshooting routine.
Estimate unmeasured concentrations
concentrations

Resolve concentrations in different compartments
concentrations

Find minimum/maximum feasible NADH/NAD ratio or adenylate energy charge
Non-linear terms
Define the ratio of interest as input with very loose (wide) bounds
Infer reaction direction
ΔrG'
Find reactions that have a ΔrG' with a unique sign
Verify reversibility in model
ΔrG'
Infer reaction directions from NET analysis and compare with reversibility in model or literature
Spot putative control sites
ΔrG'
Find reactions that are known to be active and operate far from equilibrium
Exclude activity of transporters
ΔrG'
Transporters with non-zero, positive ΔrG' are either not active or have reversed flux.

Zamboni et al. BMC Bioinformatics 2008 9:199   doi:10.1186/1471-2105-9-199