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BRS2 — Methylation & One-Carbon Metabolism

BRS2-FM3-PM7 - Phospholipid Methylation

1. Definition

SAMe-dependent methylation of phospholipids affecting membrane composition and receptor function.

2. Target Functional Outcome / Phenome

These mappings are translational relationships, not single-mechanism outcome claims. Phenomes are emergent functional patterns supported by multiple interacting PMs across the BRAIN Framework.

No direct functional outcome relationship currently mapped.

3. Intervention Breakdown

Food-State Dominant

4. Functional Role

↑ membrane methylation; ↑ fluidity

5. Mechanistic Basis

Summary

SAMe-dependent methylation of phospholipids affecting membrane composition and receptor function.

Phospholipid Methylation — mechanistic detail

(Phospholipid Methylation)

SAMe-dependent methylation of phospholipids affecting membrane composition and receptor function. Captures the membrane arm emphasized in the manuscript

6. Connected BRS2 Mechanisms

6.1 Overarching Functional Mechanism

6.2 Connected Primary Mechanisms

7. Connected Mechanisms

  • None listed

8. Dietary Levers

8.1 Direct Dietary Levers

  • Choline ← eggs, fish roe
  • DHA ← oily fish, algal oil
  • EPA ← oily fish, algal oil
  • EPA/DHA
  • Phosphatidylcholine ← eggs, fish roe
  • SAME

8.2 Cofactors and Supporting Inputs

  • magnesium (indirect — supports SAMe-dependent phospholipid methylation)

8.3 KCs (Key Constraints)

9. Lifestyle Levers

Lifestyle
  • Consistent daily meal timing may support one-carbon and methyl-donor availability across the day.
  • Sleep and stress context may indirectly affect methylation demand; lifestyle factors are secondary to dietary substrate supply for this PM.

10. Scoreable Inputs & Modulation Signals

Scoreable Input Categories
Input CategoryExample InputsPM relevance
Functional Property Potentialsmethyl_donor_pattern; sulfur_amino_acid_context; choline_rich_food_matrixMay support phospholipid methylation.
Realised Functional Statesconsistent_daily_methyl_donor_coverageMay reflect meal-level pathway support.
Preparation Transformationsminimally_processed; whole_food_matrixMay preserve nutrient density for pathway support.

11. References

  1. Vance et al. (2014)
  2. Arellanes et al. (2020)