science

MOTS-c

MOTS-c is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand MOTS-c rather than just read about it. In short: MOTS-c (mitochondrial open reading frame of the 12S rRNA-c) is a 16-amino-acid peptide that in humans is encoded by the mitochondrial MT-RNR1 gene, with the amino acid sequence MRWQEMGYIFYPRKLR. It is believed to be involved in regulating metabolism of glucose by skeletal muscle tissue.

Key takeaways

MOTS-c belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect MOTS-c to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of MOTS-c from memory before moving on to harder problems.

Reference excerpt

MOTS-c (mitochondrial open reading frame of the 12S rRNA-c) is a 16-amino-acid peptide that in humans is encoded by the mitochondrial MT-RNR1 gene, with the amino acid sequence MRWQEMGYIFYPRKLR. It is believed to be involved in regulating metabolism of glucose by skeletal muscle tissue. It is upregulated in response to exercise, and is considered an exercise mimetic, as well as having other potential medical applications. MOTS-c binds to casein kinase 2.

Society and culture A team of researchers led by Changhan Lee, a member of the Pinchas Cohen laboratory at the USC Davis School of Gerontology, discovered MOTS-c in 2015. Subsequent research by Lee and colleagues linked administration of MOTS-c to improved physical fitness, decreased obesity, and longer healthy lifespans in mice. MOTS-c is not approved to treat any medical condition and is banned by the World Anti-Doping Agency, explicitly beginning in 2024. Despite a lack of robust human data, usage as an injectable supplement as part of the "peptide stacking" trend has been reported.

See also CJC-1295 BPC-157 Epidermal growth factor Humanin Mechano growth factor Small humanin-like peptide TB-500

References

Illustrations

Worked examples

Example 1 — a first encounter with MOTS-c

Start with the simplest possible case. Write down what MOTS-c claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to MOTS-c before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about MOTS-c ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of MOTS-c

In research: MOTS-c appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses MOTS-c in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: MOTS-c is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2015 in science, Exercise mimetics, Hexadecapeptides, so understanding it makes those chapters shorter.
In everyday life: Look for MOTS-c outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study MOTS-c in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what MOTS-c means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain MOTS-c out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is MOTS-c in simple terms?

Why does MOTS-c matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study MOTS-c?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on MOTS-c.