Source comparison
Three-Way Comparison: SS-31, MOTS-C, and NAD+
Origin Synthetic aromatic-cationic peptide Naturally-occurring mitochondria-encoded peptide Endogenous metabolite (restored via NR or NMN) Primary Localization Inner mitochondrial membrane (cardiolipin-targeted) Mitochondria → cytoplasm → nucleus (stress-induc
This comparison does not assign a generated winner or score.
- Origin
- Synthetic aromatic-cationic peptide
- Naturally-occurring mitochondria-encoded peptide
- Endogenous metabolite (restored via NR or NMN)
- Primary Localization
- Inner mitochondrial membrane (cardiolipin-targeted)
- Mitochondria → cytoplasm → nucleus (stress-induced)
- Ubiquitous — cytoplasm, mitochondria, nucleus
- Primary Molecular Target
- Cardiolipin (IMM phospholipid)
- AMPK (via AICAR accumulation + ARE/Nrf2 in nucleus)
- Sirtuins (SIRT1, SIRT3, SIRT5 etc.) and PARPs
- ROS Reduction Mechanism
- Direct — reduces electron leak at ETC; scavenges radicals at IMM
- Indirect — Nrf2-mediated antioxidant gene upregulation
- Indirect — SIRT3 activates SOD2, IDH2; antioxidant enzyme activity
- Mitochondrial Biogenesis
- Not a primary mechanism
- AMPK → PGC-1α activation
- SIRT1 → PGC-1α deacetylation/activation
- ETC Complex Activity
- Preserves supercomplex organization via cardiolipin stabilization
- No direct ETC effect
- SIRT3 deacetylates Complex I/II subunits; improves efficiency
- Metabolic Signaling
- Indirect (improved ATP efficiency)
- Direct — AMPK activation, glucose uptake, fat oxidation
- Sirtuin-mediated — SIRT1 modulates metabolic transcription programs
- Apoptosis Regulation
- Cardiolipin stabilization retains cytochrome c at IMM
- AMPK pro-survival signaling
- SIRT1 deacetylates p53; PARP repair reduces DNA-damage-induced apoptosis
- Age-Related Endogenous Change
- N/A (synthetic)
- Declines with aging (reduced mtDNA transcription)
- Declines with aging (reduced NAMPT; increased CD38/SARM1 consumption)
- Primary Research Models
- Cardiac ischemia, HFpEF, aged skeletal muscle, renal ischemia
- Diet-induced obesity, insulin resistance, aged muscle/exercise models
- Aging models (multiple tissues), metabolic syndrome, neurodegeneration