chemistry

Hydroxyphenylpyruvate reductase

Hydroxyphenylpyruvate reductase is a chemistry 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 Hydroxyphenylpyruvate reductase rather than just read about it. In short: In enzymology, a hydroxyphenylpyruvate reductase (EC 1.1.1.237) is an enzyme that catalyzes the chemical reaction 3-(4-hydroxyphenyl)lactate + NAD+ ⇌ {\displaystyle \rightleftharpoons } 3-(4-hydroxyphenyl)pyruvate + NADH + H+ Thus, the two substrates of this enzyme are 3-(4-hydroxyphenyl)lactate and NAD+, whereas its 3 products are 3-(4-hydroxyphenyl)pyruvate, NADH, and H+. This enzyme belongs to the family of oxido…

Key takeaways

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

Reference excerpt

In enzymology, a hydroxyphenylpyruvate reductase (EC 1.1.1.237) is an enzyme that catalyzes the chemical reaction

3-(4-hydroxyphenyl)lactate + NAD+ ⇌ {\displaystyle \rightleftharpoons } 3-(4-hydroxyphenyl)pyruvate + NADH + H+ Thus, the two substrates of this enzyme are 3-(4-hydroxyphenyl)lactate and NAD+, whereas its 3 products are 3-(4-hydroxyphenyl)pyruvate, NADH, and H+. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 4-hydroxyphenyllactate:NAD+ oxidoreductase. This enzyme is also called HPRP. This enzyme participates in tyrosine metabolism and phenylalanine metabolism.

References

Petersen M, Alfermann AW (1988). "Two new enzymes of rosmarinic acid biosynthesis from cell cultures of Coleus blumei: hydroxyphenylpyruvate reductase and rosmarinic acid synthase". Z. Naturforsch. C: Biosci. 43 (7–8): 501–504. doi:10.1515/znc-1988-7-804.

Worked examples

Example 1 — a first encounter with Hydroxyphenylpyruvate reductase

Start with the simplest possible case. Write down what Hydroxyphenylpyruvate reductase claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Hydroxyphenylpyruvate reductase 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 Hydroxyphenylpyruvate reductase 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 Hydroxyphenylpyruvate reductase

In research: Hydroxyphenylpyruvate reductase appears in chemistry 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 Hydroxyphenylpyruvate reductase 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: Hydroxyphenylpyruvate reductase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 1.1.1, EC 1.1.1 stubs, Enzymes of unknown structure, so understanding it makes those chapters shorter.
In everyday life: Look for Hydroxyphenylpyruvate reductase 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 “Hydroxyphenylpyruvate reductase” →

Affiliate

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

How to study Hydroxyphenylpyruvate reductase in 20 minutes

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

Frequently asked questions

What is Hydroxyphenylpyruvate reductase in simple terms?

In enzymology, a hydroxyphenylpyruvate reductase (EC 1.1.1.237) is an enzyme that catalyzes the chemical reaction 3-(4-hydroxyphenyl)lactate + NAD+ ⇌ {\displaystyle \rightleftharpoons } 3-(4-hydroxyphenyl)pyruvate + NADH + H+ Thus, the two substrates of this enzyme are 3-(4-hydroxyphenyl)lactate an…

Why does Hydroxyphenylpyruvate reductase matter?

Because it connects several chemistry 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 Hydroxyphenylpyruvate reductase?

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 Hydroxyphenylpyruvate reductase.