Reconstruction


gapFind(model, findNCgaps, verbFlag)

Identifies all blocked metabolites (anything downstream of a gap) in a model. MILP algorithm that finds gaps that may be missed by simple inspection of the S matrix. To find every gap in a model, change the rxn bounds on all exchange reactions to allow uptake of every metabolite.

USAGE:

[allGaps, rootGaps, downstreamGaps] = gapFind(model, findNCgaps, verbFlag)

INPUT:

model: a COBRA model

OPTIONAL INPUTS:
findNCgaps: find no consupmption gaps as well as no production gaps

(default false)

verbFlag: verbose flag (default false)

OUTPUTS:

allGaps: all gaps found by GapFind rootGaps: all root no production (and consumption) gaps downstreamGaps: all downstream gaps

Based on Kumar, V. et al. BMC Bioinformatics. 2007 Jun 20;8:212.

testPathway(model, MetIn, MetOut, AdditionalMetsInorOut, ObjectiveOption)

Allows the user to see if given one metabolite A, downstream metabolite B can be made made. Additional sinks can be added for co-factors if needed A –>–>–>–>–> B

USAGE:

[Flux, FBAsolution, model] = testPathway(model, MetIn, MetOut, AdditionalMetsInorOut, ObjectiveOption)

INPUTS:

model: COBRA model structure MetIn: The input metabolite(s) (A) MetOut: The output metabolite (B)

OPTIONAL INPUTS:

AdditionalMetsInorOut: Additional metabolites for which sinks will be added ObjectiveOption: Boolean:

  • 1 = objective will be production of B (default)

  • 0 = use objective in model

OUTPUTS:

Flux: The rate of B production FBAsolution: Solution to the FBA problem model: COBRA model with sinks in it