biology

Lecithin retinol acyltransferase

Lecithin retinol acyltransferase 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 Lecithin retinol acyltransferase rather than just read about it. In short: Lecithin retinol acyltransferase is an enzyme that in humans is encoded by the LRAT gene. Function Lecithin retinol acyltransferase is a microsomal enzyme that catalyzes the esterification of all-trans-retinol into all-trans-retinyl ester during phototransduction, an essential reaction for the retinoid cycle in visual system and vitamin A status in liver.

Key takeaways

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

Reference excerpt

Lecithin retinol acyltransferase is an enzyme that in humans is encoded by the LRAT gene.

Function Lecithin retinol acyltransferase is a microsomal enzyme that catalyzes the esterification of all-trans-retinol into all-trans-retinyl ester during phototransduction, an essential reaction for the retinoid cycle in visual system and vitamin A status in liver.

Clinical significance Mutations in this gene have been associated with early-onset severe retinal dystrophy. LRAT was overexpressed in colorectal cancer cells compared to normal colonic epithelium. Strong LRAT expression was associated with a poor prognosis in patients with colorectal cancer.

Illustrations

Worked examples

Example 1 — a first encounter with Lecithin retinol acyltransferase

Start with the simplest possible case. Write down what Lecithin retinol acyltransferase 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 Lecithin retinol acyltransferase 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 Lecithin retinol acyltransferase 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 Lecithin retinol acyltransferase

In research: Lecithin retinol acyltransferase 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 Lecithin retinol acyltransferase 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: Lecithin retinol acyltransferase is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 4, Human chromosome 4 gene stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Lecithin retinol acyltransferase 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Lecithin retinol acyltransferase” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Lecithin retinol acyltransferase in 20 minutes

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

Frequently asked questions

What is Lecithin retinol acyltransferase in simple terms?

Lecithin retinol acyltransferase is an enzyme that in humans is encoded by the LRAT gene. Function Lecithin retinol acyltransferase is a microsomal enzyme that catalyzes the esterification of all-trans-retinol into all-trans-retinyl ester during phototransduction, an essential reaction for the reti…

Why does Lecithin retinol acyltransferase 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 Lecithin retinol acyltransferase?

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 Lecithin retinol acyltransferase.