biology

GFRA2

GFRA2 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 GFRA2 rather than just read about it. In short: GDNF family receptor alpha-2 (GFRα2), also known as the neurturin receptor, is a protein that in humans is encoded by the GFRA2 gene. Function The GFRA2 protein is a glycosylphosphatidylinositol(GPI)-linked cell surface receptor.

Key takeaways

GFRA2 belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect GFRA2 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of GFRA2 from memory before moving on to harder problems.

Reference excerpt

GDNF family receptor alpha-2 (GFRα2), also known as the neurturin receptor, is a protein that in humans is encoded by the GFRA2 gene.

Function The GFRA2 protein is a glycosylphosphatidylinositol(GPI)-linked cell surface receptor. It is part of the GDNF receptor family. Glial cell line-derived neurotrophic factor (GDNF) and neurturin (NTN) are two structurally related, potent neurotrophic factors that play key roles in the control of neuron survival and differentiation. They both bind the GFRA2 receptor. The receptor mediates activation of the RET tyrosine kinase receptor. This encoded protein acts preferentially as a receptor for NTN compared to its other family member, GDNF family receptor alpha 1. This gene is a candidate gene for RET-associated diseases.

Interactions GFRA2 (gene) has been shown to interact with GDNF.

Illustrations

Worked examples

Example 1 — a first encounter with GFRA2

Start with the simplest possible case. Write down what GFRA2 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 GFRA2 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 GFRA2 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 GFRA2

In research: GFRA2 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 GFRA2 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: GFRA2 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 8, Human chromosome 8 gene stubs, so understanding it makes those chapters shorter.
In everyday life: Look for GFRA2 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 GFRA2 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what GFRA2 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 GFRA2 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is GFRA2 in simple terms?

GDNF family receptor alpha-2 (GFRα2), also known as the neurturin receptor, is a protein that in humans is encoded by the GFRA2 gene. Function The GFRA2 protein is a glycosylphosphatidylinositol(GPI)-linked cell surface receptor.

Why does GFRA2 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 GFRA2?

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 GFRA2.