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MOTS-c — full name "Mitochondrial Open reading frame of the Twelve S rRNA - c" — is a synthetic 16-amino-acid peptide corresponding to a mitochondrial-derived peptide (MDP) that is encoded within a short open reading frame in the human mitochondrial 12S ribosomal RNA gene. MDPs are peptides whose coding sequences are found within mitochondrial DNA rather than in nuclear DNA, and MOTS-c is among the earliest such peptides to be characterized. The peptide was first identified and characterized in the laboratory of Pinchas Cohen at the USC Leonard Davis School of Gerontology.
The peptide has a molecular weight of approximately 2174.5 g/mol and CAS number 1627580-64-6, with the one-letter sequence MRWQEMGYIFYPRKLR. On the lot referenced here (MOTS-210-TPL), identity is confirmed by LC-MS through convergent observation across four charge states — [M+5H]⁵⁺ at m/z 435.900, [M+4H]⁴⁺ at 544.600, [M+3H]³⁺ at 725.700, and [M+2H]²⁺ at 1088.500 — each back-calculating to the expected ~2174.5 Da mass. Documented purity by HPLC with UV detection is 99.45%. Third-party characterization was performed by Freedom Diagnostics (USA).
This product is supplied as a white lyophilized powder at 10 mg labeled size (11.14 mg net content per vial per the COA), synthesized by solid-phase peptide synthesis (SPPS). It is intended exclusively for in-vitro laboratory research and analytical applications.
In the research literature, MOTS-c is referenced as a synthetic mitochondrial-derived peptide used as a reference compound in biochemistry research on the MDP class.
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Store lyophilized peptide in a cool, dry place away from direct light (stable 3–4 months unrefrigerated). After reconstitution, refrigerate at 2–8°C for up to 30 days, or freeze at −80°C for long-term storage.
Related Research Compounds
Verified Test Results
Analysed by an accredited third-party laboratory before release. The figures below are transcribed from the certificate for this compound.
Lot-specific COA available
Technical Specifications
Synthetic mitochondrial-derived peptide (MDP) referenced in biochemistry research
Sequence
MRWQEMGYIFYPRKLR
Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg
Encoded within the human mitochondrial 12S ribosomal RNA gene; one of the earliest characterized mitochondrial-derived peptides (MDPs)
Mass spectrometry
Convergent identity confirmation across 4 charge states — [M+5H]⁵⁺ observed at m/z 435.900, [M+4H]⁴⁺ at 544.600, [M+3H]³⁺ at 725.700, [M+2H]²⁺ at 1088.500 (all back-calculating to ~2174.5 Da)
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Not for human, veterinary, or food use. All products sold by True Peptide Labs are intended for laboratory research purposes only, and are supplied exclusively to qualified researchers and institutions. They are not drugs, foods, cosmetics, or medical devices, and have not been evaluated by the Food and Drug Administration.
Nothing on this page constitutes medical advice or a claim of safety or efficacy. Any research literature referenced describes published work on the compound and is not a representation about this product. By purchasing, you confirm that you are a qualified researcher and will use the product in accordance with all applicable laws and regulations.