engineering

Homocysteine S-methyltransferase

Homocysteine S-methyltransferase is a engineering 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 Homocysteine S-methyltransferase rather than just read about it. In short: Homocysteine S-methyltransferase (EC 2.1.1.10) is an enzyme that catalyzes the chemical reaction A methyl group is transferred from S-methyl-L-methioninate to L-homocysteine, forming two molecules of the amino acid, L-methionine. The methyl group can also be transferred from S-adenosyl methionine but in plants this is less preferred than from S-methyl-L-methioninate.

Key takeaways

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

Reference excerpt

Homocysteine S-methyltransferase (EC 2.1.1.10) is an enzyme that catalyzes the chemical reaction

A methyl group is transferred from S-methyl-L-methioninate to L-homocysteine, forming two molecules of the amino acid, L-methionine. The methyl group can also be transferred from S-adenosyl methionine but in plants this is less preferred than from S-methyl-L-methioninate.

Alternative names The systematic name of this enzyme class is S-adenosyl-L-methionine:L-homocysteine S-methyltransferase. Other names in use include S-adenosylmethionine homocysteine transmethylase, S-methylmethionine homocysteine transmethylase, adenosylmethionine transmethylase, methylmethionine:homocysteine methyltransferase, adenosylmethionine:homocysteine methyltransferase, homocysteine methylase, homocysteine methyltransferase, homocysteine transmethylase, L-homocysteine S-methyltransferase, S-adenosyl-L-methionine:L-homocysteine methyltransferase, S-adenosylmethionine-homocysteine transmethylase, and S-adenosylmethionine:homocysteine methyltransferase.

References

Illustrations

Worked examples

Example 1 — a first encounter with Homocysteine S-methyltransferase

Start with the simplest possible case. Write down what Homocysteine S-methyltransferase claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 Homocysteine S-methyltransferase 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 Homocysteine S-methyltransferase 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 Homocysteine S-methyltransferase

In research: Homocysteine S-methyltransferase appears in engineering 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 Homocysteine S-methyltransferase 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: Homocysteine S-methyltransferase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 2.1.1, EC 2.1 stubs, Enzymes of unknown structure, so understanding it makes those chapters shorter.
In everyday life: Look for Homocysteine S-methyltransferase 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 “Homocysteine S-methyltransferase” →

Affiliate

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

How to study Homocysteine S-methyltransferase in 20 minutes

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

Frequently asked questions

What is Homocysteine S-methyltransferase in simple terms?

Homocysteine S-methyltransferase (EC 2.1.1.10) is an enzyme that catalyzes the chemical reaction A methyl group is transferred from S-methyl-L-methioninate to L-homocysteine, forming two molecules of the amino acid, L-methionine. The methyl group can also be transferred from S-adenosyl methionine b…

Why does Homocysteine S-methyltransferase matter?

Because it connects several engineering 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 Homocysteine S-methyltransferase?

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 Homocysteine S-methyltransferase.