IFI-U · Free Glutamate Accumulation

Specimen SS-F-UMA-336 // UMAMI · IFI-U

Free Glutamate Accumulation II-IV-B

Solanum lycopersicum

Tomato

Tier IIFree Glutamate Accumulation

Target Trait

2.85 mg/L

mg/L

Free glutamate concentration

Technical Specifications

SKU

SS-F-UMA-336

Genomic Edits

6

GC Content

47.3-53.3%

Construct Length

3,654 bp

Promoter System

T7/SP6 cell-free

Expression System

Cell-free T7/SP6 in-vitro

Host Strain

Cell-free

Receptor Target

mGluR1 / TAS1R1-TAS1R3

IFI Score

285

Pathway Edits

  • SlGDH2 glutamate dehydrogenase isoform 2 overexpression under fruit-ripening RIN promoter for TCA-to-glutamate reductive amination burst at red stage
  • SlGS1 cytosolic glutamine synthetase feedback-resistant mutant (G295A) for unregulated glutamine-to-glutamate cycling under high-nitrogen conditions
  • SlGOGAT glutamine:2-oxoglutarate aminotransferase upregulation for expanded GS-GOGAT cycle flux amplifying net free glutamate output
  • SlGLN1;2 pericarp-specific glutamine synthetase overexpression for localized free amino acid accumulation in fruit skin
  • SlAAT aspartate aminotransferase isoform 1 redirected via active-site mutation (K256R) favoring glutamate over aspartate output
  • SlVGT1 vacuolar glutamate transporter overexpression for apoplastic glutamate accumulation and controlled release upon maceration

Key Interventions

Free glutamate steady-state elevation via GDH2/GS1/GOGAT triad engineering for mGluR1 direct agonism in final product matrixVacuolar glutamate compartmentalization enabling burst release upon food processing for maximum perceived umami intensityGABA shunt suppression maintaining carbon flux in glutamate pool rather than succinate-semialdehyde branch

IFI Subscale Profile

IFI Profile

IFI-S
—
IFI-U
285
IFI-B
—
IFI-K
—
IFI-C
—
IFI-P
—
IFI-A
—
IFI-F
—

Use Case

Fresh-market and processing tomatoes where elevated free glutamate drives MSG-free savory intensity. Applicable to tomato juice, concentrate, and passata for restaurant and food-service clients targeting natural umami labeling.

License

$749 · Tier II License

Includes full construct sequence, CRISPR guide designs, pathway edit specifications, flux balance analysis, and IFI validation data.

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