biology

Motilin receptor

Motilin receptor is a biology 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 Motilin receptor rather than just read about it. In short: Motilin receptor is a G protein-coupled receptor (previously GPCR38) that binds motilin. It was first cloned in 1999 by Merck Laboratories. and scientists have since been searching for compounds to modify its behavior.

Key takeaways

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

Reference excerpt

Motilin receptor is a G protein-coupled receptor (previously GPCR38) that binds motilin. It was first cloned in 1999 by Merck Laboratories. and scientists have since been searching for compounds to modify its behavior. The primary structure of the motilin receptor consists of 412 amino acids, while its tertiary structure resembles a golf club. The protein C-terminal protein protects from enzymatic degradation, while the N-terminal is essential for binding.

Function The primary function of the motilin receptor is to contract gastric smooth muscle during phase III of the migrating motor complex (MMC). In this final phase of the MMC, N-type motilin receptors in the distal antral pump of the stomach are activated. This causes contraction of the gastric smooth muscle, sieving food into the small intestine, and priming the stomach for the next meal.

Motilin Motilin is an intestinal peptide that stimulates the contraction of gastric smooth muscle via the motilin receptor. It is produced by enteroendocrine cells in the proximal small intestine and secreted cyclically. Motilin mimetics could be used to increase gastric motility in patients with gastroparesis e.g., constipation-predominant irritable bowel syndrome. However, none of the candidate drugs that have been tested so far have made it to market.

References

Illustrations

Worked examples

Example 1 — a first encounter with Motilin receptor

Start with the simplest possible case. Write down what Motilin receptor claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Motilin receptor 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 Motilin receptor 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 Motilin receptor

In research: Motilin receptor appears in biology 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 Motilin receptor 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: Motilin receptor is common in secondary-school and first-year university syllabi. It links to neighbouring topics G protein-coupled receptors, Genes on human chromosome 13, Human proteins, so understanding it makes those chapters shorter.
In everyday life: Look for Motilin receptor 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 Motilin receptor in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Motilin receptor 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 Motilin receptor out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Motilin receptor in simple terms?

Why does Motilin receptor matter?

Because it connects several biology 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 Motilin receptor?

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 Motilin receptor.