⚠ FOR LABORATORY RESEARCH USE ONLY · NOT FOR HUMAN CONSUMPTION · QUALIFIED RESEARCHERS 21+
// PB-0004 Peptide Longevity

MOTS-c

Mitochondrial-derived peptide.

MOTS-c ("mitochondrial open reading frame of the twelve S rRNA-c") is a 16-residue peptide encoded within the mitochondrial 12S rRNA region — one of the first biologically active peptides identified as being encoded in mitochondrial DNA. Supplied as research-grade material with 3rd-party HPLC verification and full Certificate of Analysis per lot.

01

Compound profile.

// CHEMICAL & STRUCTURAL SPEC — MOTS-C
MOLECULAR FORMULA
C99H158N26O25S2
Peptide · longevity class.
MOLECULAR WEIGHT
2,174 Da
Monoisotopic / reported mass.
CHAIN LENGTH
16 aa
Primary structure residues.
ORIGIN
Mitochondrial DNA
Source or discovery context.
STUDIED PATHWAYS
AMPK · GLUT4 · Mito
Reported in published literature.
REPORTED HALF-LIFE
~1 hr
Short serum half-life reported.
HPLC PURITY
99.8%
Minimum release spec · typical >99.9%.
APPEARANCE
White lyo.
White to off-white lyophilized form.
// PRIMARY STRUCTURE
M–R–W–Q–E–M–G–Y–I–F–Y–P–R–K–L–R

// Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg. Encoded within the mitochondrial 12S rRNA region — a rare case of a biologically active peptide expressed from mtDNA.
02

What the literature reports.

MOTS-c ("mitochondrial open reading frame of the twelve S rRNA-c") is a 16-residue peptide encoded within the mitochondrial 12S rRNA region — one of the first biologically active peptides identified as being encoded in mitochondrial DNA.

Reported mechanism

First characterized by Lee and Cohen at USC (2015), MOTS-c is described in the literature as a regulator of metabolic homeostasis. Reported pathways include activation of AMPK signaling, enhancement of GLUT4-mediated glucose uptake in skeletal muscle, and modulation of mitochondrial folate-methionine cycle flux. Published work describes it as translocating to the nucleus under metabolic stress to regulate stress-response gene expression.

Regulatory status

MOTS-c is not an FDA-approved drug. It is widely available as a research compound and is not a scheduled substance. The compound has attracted interest in longevity and metabolic research communities.

The above summarizes published research literature. This is not medical advice, a protocol, or a recommendation for use. This compound is supplied for laboratory research only.

03

Storage & release.

SHIP TEMP
Ambient
Lyophilized; stable at room temp in transit.
UNOPENED
Refrigerate
Lyophilized, protected from light.
RECONSTITUTED
~28 days
At 2–8°C; never freeze solutions.
RELEASE DOC
COA · per lot
3rd-party analytical · attached at ship.
lab@peptidebros:~$ cat release.mots-c.MOTS-26-Q2-0043.log
// lot release record
compound MOTS-c (C99H158N26O25S2)
lot.id MOTS-26-Q2-0043
class peptide
mw.theoretical 2,174 Da
mw.observed 2,174 Da  [PASS]
purity.hplc 99.91%  [> 99.5% spec]
endotoxin < 0.125 EU/mL  [PASS]
sterility no growth  [PASS]
release.status RELEASED
04

Common questions.

What's the molecular profile?+

MOTS-c is a 16-residue peptide with molecular formula C99H158N26O25S2 and molecular weight of approximately 2,174 Da.

The full structural data and release specifications are in the Compound Profile section above. Every lot ships with an independently verified Certificate of Analysis.

How is purity verified?+

Each lot is independently verified by a 3rd-party analytical laboratory (STERIS Labs, Alcami Analytical, or equivalent) before release. Release specification is HPLC purity ≥ 99.5% (typical > 99.8%), mass spectrometry identity match within ±0.5 Da, water content < 5.0% Karl Fischer, and endotoxin < 0.25 EU/mL by LAL (USP <85>).

Look up the full COA for your lot at coa-lookup.html.

How is the compound shipped and stored?+

All compounds ship at ambient temperature in discreet, tamper-evident packaging. Lyophilized peptide powder is stable at room temperature for typical transit windows, which is why research-grade vendors ship this way. Tracked; signature not required.

Store unopened lyophilized product at 2–8°C protected from light. Once reconstituted, most peptides are stable at 2–8°C for approximately 28 days (compound-dependent).

Is this compound FDA-approved?+

MOTS-c is not an FDA-approved drug. It is widely available as a research compound and is not a scheduled substance. The compound has attracted interest in longevity and metabolic research communities.

All PeptideBros compounds are sold strictly as chemical reference materials for in-vitro laboratory research. They are not for human consumption.

Every lot,
on paper.

HPLC-verified. Mass-spec confirmed. Ambient-stable transit. The paperwork other vendors hope you never ask for.