CATEGORY · MULTI-MECHANISM

Mitochondrial

MDP
mitochondrial-derived peptides
muscle aging

Mitochondrial-derived peptides (MDPs) are encoded in the mitochondrial genome and act as retrograde signaling molecules. MOTS-c (16 aa) activates AMPK and regulates metabolic homeostasis - it was the first MDP shown to have systemic metabolic effects (Lee et al. 2015, Cell Metabolism).

MDPs represent a new class of endogenous peptide hormones. Their mitochondrial origin means they evolve under different selective pressures than nuclear-encoded peptides, making them interesting targets for sequence optimization.

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What is a category target?

Groups peptides by what they do, not what they bind. There's no PDB or UniProt — the target is a function, not a molecule. For receptor-level structure, open a molecular target like GHSR.

anchor card · canonical reference for this target

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MOTS-c: natural mitochondrial peptide tied to metabolism and longevity

MRWQEMGYIFYPRKLR · 16 aa · @peptidemodel

bioassayed pep-00003 @peptidemodel refs: 5

all cards · 1 candidates against Mitochondrial

# id title author status refs ipSAE_d0chn
1–1 of 1

target literature · 5 curated papers

[3]
Lu, H. et al. 2019 Journal of Molecular Medicine MOTS-c peptide regulates adipose homeostasis to prevent ovariectomy-induced metabolic dysfunction
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[4]
Kim, S.J. et al. 2018 Cell Reports MOTS-c: an equal opportunity insulin sensitizer
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[5]
Bień, J. et al. 2025 Histochemistry and Cell Biology ORIGINAL PAPER
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