biology

GRIN3A

GRIN3A 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 GRIN3A rather than just read about it. In short: Glutamate [NMDA] receptor subunit 3A is a protein that in humans is encoded by the GRIN3A gene. Function This gene encodes a subunit of the N-methyl-D-aspartate (NMDAR) receptors, which belong to the superfamily of glutamate-regulated ion channels, and function in physiological and pathological processes in the central nervous system.

Key takeaways

GRIN3A belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect GRIN3A to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of GRIN3A from memory before moving on to harder problems.

Reference excerpt

Glutamate [NMDA] receptor subunit 3A is a protein that in humans is encoded by the GRIN3A gene.

Function This gene encodes a subunit of the N-methyl-D-aspartate (NMDAR) receptors, which belong to the superfamily of glutamate-regulated ion channels, and function in physiological and pathological processes in the central nervous system. This subunit shows greater than 90% identity to the corresponding subunit in rat. Studies in the knockout mouse deficient in this subunit suggest that this gene may be involved in the development of synaptic elements by modulating NMDA receptor activity.

Illustrations

Worked examples

Example 1 — a first encounter with GRIN3A

Start with the simplest possible case. Write down what GRIN3A 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 GRIN3A 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 GRIN3A 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 GRIN3A

In research: GRIN3A 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 GRIN3A 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: GRIN3A is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 9, Human chromosome 9 gene stubs, Ionotropic glutamate receptors, so understanding it makes those chapters shorter.
In everyday life: Look for GRIN3A 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 GRIN3A in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what GRIN3A 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 GRIN3A out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is GRIN3A in simple terms?

Glutamate [NMDA] receptor subunit 3A is a protein that in humans is encoded by the GRIN3A gene. Function This gene encodes a subunit of the N-methyl-D-aspartate (NMDAR) receptors, which belong to the superfamily of glutamate-regulated ion channels, and function in physiological and pathological pro…

Why does GRIN3A 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 GRIN3A?

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 GRIN3A.