biology

Putrescine oxidase

Putrescine oxidase 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 Putrescine oxidase rather than just read about it. In short: In enzymology, putrescine oxidase (EC 1.4.3.10) is an enzyme that catalyzes the chemical reaction The 3 substrates of this enzyme are putrescine, water, and oxygen. Its products are 4-aminobutanal, hydrogen peroxide, and ammonia.

Key takeaways

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

Reference excerpt

In enzymology, putrescine oxidase (EC 1.4.3.10) is an enzyme that catalyzes the chemical reaction

The 3 substrates of this enzyme are putrescine, water, and oxygen. Its products are 4-aminobutanal, hydrogen peroxide, and ammonia. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-NH2 group of donors with oxygen as acceptor. The systematic name of this enzyme class is putrescine:oxygen oxidoreductase (deaminating). This enzyme participates in urea cycle and metabolism of amino groups. It employs one cofactor, FAD.

References

Illustrations

Worked examples

Example 1 — a first encounter with Putrescine oxidase

Start with the simplest possible case. Write down what Putrescine oxidase 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 Putrescine oxidase 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 Putrescine oxidase 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 Putrescine oxidase

In research: Putrescine oxidase 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 Putrescine oxidase 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: Putrescine oxidase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 1.4.3, Enzymes of unknown structure, Flavoproteins, so understanding it makes those chapters shorter.
In everyday life: Look for Putrescine oxidase 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 Putrescine oxidase in 20 minutes

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

Frequently asked questions

What is Putrescine oxidase in simple terms?

In enzymology, putrescine oxidase (EC 1.4.3.10) is an enzyme that catalyzes the chemical reaction The 3 substrates of this enzyme are putrescine, water, and oxygen. Its products are 4-aminobutanal, hydrogen peroxide, and ammonia.

Why does Putrescine oxidase 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 Putrescine oxidase?

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 Putrescine oxidase.