engineering

Phenylacetyl-CoA dehydrogenase

Phenylacetyl-CoA dehydrogenase 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 Phenylacetyl-CoA dehydrogenase rather than just read about it. In short: In enzymology, a phenylacetyl-CoA dehydrogenase (EC 1.17.5.1) is an enzyme that catalyzes the chemical reaction phenylacetyl-CoA + H2O + 2 quinone ⇌ {\displaystyle \rightleftharpoons } phenylglyoxylyl-CoA + 2 quinol The 3 substrates of this enzyme are phenylacetyl-CoA, H2O, and quinone, whereas its two products are phenylglyoxylyl-CoA and quinol. This enzyme belongs to the family of oxidoreductases, specifically tho…

Key takeaways

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

Reference excerpt

In enzymology, a phenylacetyl-CoA dehydrogenase (EC 1.17.5.1) is an enzyme that catalyzes the chemical reaction

phenylacetyl-CoA + H2O + 2 quinone ⇌ {\displaystyle \rightleftharpoons } phenylglyoxylyl-CoA + 2 quinol The 3 substrates of this enzyme are phenylacetyl-CoA, H2O, and quinone, whereas its two products are phenylglyoxylyl-CoA and quinol. This enzyme belongs to the family of oxidoreductases, specifically those acting on CH or CH2 groups with a quinone or similar compound as acceptor. The systematic name of this enzyme class is phenylacetyl-CoA:quinone oxidoreductase. This enzyme is also called phenylacetyl-CoA:acceptor oxidoreductase.

References

Rhee SK, Fuchs G (1999). "Phenylacetyl-CoA:acceptor oxidoreductase, a membrane-bound molybdenum–iron–sulfur enzyme involved in anaerobic metabolism of phenylalanine in the denitrifying bacterium Thauera aromatica". Eur. J. Biochem. 262 (2): 507–15. doi:10.1046/j.1432-1327.1999.00399.x. PMID 10336636. Schneider S, Fuchs G (1998). "Phenylacetyl-CoA:acceptor oxidoreductase, a new α-oxidizing enzyme that produces phenylglyoxylate. Assay, membrane localization, and differential production in Thauera aromatica". Arch. Microbiol. 169 (6): 509–16. Bibcode:1998ArMic.169..509S. doi:10.1007/s002030050604. PMID 9575237.

Worked examples

Example 1 — a first encounter with Phenylacetyl-CoA dehydrogenase

Start with the simplest possible case. Write down what Phenylacetyl-CoA dehydrogenase 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 Phenylacetyl-CoA dehydrogenase 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 Phenylacetyl-CoA dehydrogenase 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 Phenylacetyl-CoA dehydrogenase

In research: Phenylacetyl-CoA dehydrogenase 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 Phenylacetyl-CoA dehydrogenase 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: Phenylacetyl-CoA dehydrogenase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 1.17.5, Enzymes of unknown structure, Oxidoreductase stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Phenylacetyl-CoA dehydrogenase 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 Phenylacetyl-CoA dehydrogenase in 20 minutes

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

Frequently asked questions

What is Phenylacetyl-CoA dehydrogenase in simple terms?

In enzymology, a phenylacetyl-CoA dehydrogenase (EC 1.17.5.1) is an enzyme that catalyzes the chemical reaction phenylacetyl-CoA + H2O + 2 quinone ⇌ {\displaystyle \rightleftharpoons } phenylglyoxylyl-CoA + 2 quinol The 3 substrates of this enzyme are phenylacetyl-CoA, H2O, and quinone, whereas its…

Why does Phenylacetyl-CoA dehydrogenase 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 Phenylacetyl-CoA dehydrogenase?

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 Phenylacetyl-CoA dehydrogenase.