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GPR42

GPR42 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 GPR42 rather than just read about it. In short: Putative G-protein coupled receptor 42 (previously termed FFAR1L, FFAR3L, GPR41L, and GPR42P) is a protein that in humans is encoded by the GPR42 gene. The human GPR gene is located at the same site as the human FFAR1, FFAR, and FFAR3 genes, i.e., on the long (i.e., "q") arm of chromosome 19 at position 23.33 (notated as 19q23.33).

GPR42 — main illustration
GPR42 — illustration

Key takeaways

  • GPR42 belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect GPR42 to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of GPR42 from memory before moving on to harder problems.

Reference excerpt

Putative G-protein coupled receptor 42 (previously termed FFAR1L, FFAR3L, GPR41L, and GPR42P) is a protein that in humans is encoded by the GPR42 gene. The human GPR gene is located at the same site as the human FFAR1, FFAR, and FFAR3 genes, i.e., on the long (i.e., "q") arm of chromosome 19 at position 23.33 (notated as 19q23.33). This gene appears to be a segmental duplication of the FFAR3 gene. The human GPR42 gene codes for several proteins with a FFAR3-like structure but their expression in various cell types and tissues as well as their activities and functions have not yet been clearly defined in any scientific publication followed by PubMed as of 2023.

See also Free fatty acid receptors Free fatty acid receptor 3

References

Further reading

External links "Free Fatty Acid Receptors: GPR42". IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical Pharmacology. Archived from the original on 2016-03-03. Retrieved 2008-12-04.

Illustrations

GPR42 illustration
GPR42 illustration
GPR42 illustration
GPR42 illustration
GPR42 illustration

Worked examples

Example 1 — a first encounter with GPR42

Start with the simplest possible case. Write down what GPR42 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 GPR42 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 GPR42 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 GPR42

In research
GPR42 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 GPR42 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
GPR42 is common in secondary-school and first-year university syllabi. It links to neighbouring topics G protein-coupled receptors, Genes on human chromosome 19, Transmembrane receptor stubs, so understanding it makes those chapters shorter.
In everyday life
Look for GPR42 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 GPR42 in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what GPR42 means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain GPR42 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is GPR42 in simple terms?

Putative G-protein coupled receptor 42 (previously termed FFAR1L, FFAR3L, GPR41L, and GPR42P) is a protein that in humans is encoded by the GPR42 gene. The human GPR gene is located at the same site as the human FFAR1, FFAR, and FFAR3 genes, i.e., on the long (i.e., "q") arm of chromosome 19 at pos…

Why does GPR42 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 GPR42?

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 GPR42.

Tags

  • G protein-coupled receptors
  • Genes on human chromosome 19
  • Transmembrane receptor stubs

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