engineering

Hydroperoxide dehydratase

Hydroperoxide dehydratase 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 Hydroperoxide dehydratase rather than just read about it. In short: The enzyme hydroperoxide dehydratase (EC 4.2.1.92) catalyzes the chemical reaction (9Z,11E,14Z)-(13S)-hydroperoxyoctadeca-9,11,14-trienoate ⇌ {\displaystyle \rightleftharpoons } (9Z)-(13S)-12,13-epoxyoctadeca-9,11-dienoate + H2O This enzyme belongs to the family of lyases, specifically the hydro-lyases, which cleave carbon-oxygen bonds. The systematic name of this enzyme class is (9Z,11E,14Z)-(13S)-hydroperoxyoctade…

Key takeaways

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

Reference excerpt

The enzyme hydroperoxide dehydratase (EC 4.2.1.92) catalyzes the chemical reaction

(9Z,11E,14Z)-(13S)-hydroperoxyoctadeca-9,11,14-trienoate ⇌ {\displaystyle \rightleftharpoons } (9Z)-(13S)-12,13-epoxyoctadeca-9,11-dienoate + H2O This enzyme belongs to the family of lyases, specifically the hydro-lyases, which cleave carbon-oxygen bonds. The systematic name of this enzyme class is (9Z,11E,14Z)-(13S)-hydroperoxyoctadeca-9,11,14-trienoate 12,13-hydro-lyase [(9Z)-(13S)-12,13-epoxyoctadeca-9,11-dienoate-forming]. Other names in common use include hydroperoxide isomerase, linoleate hydroperoxide isomerase, linoleic acid hydroperoxide isomerase, HPI, (9Z,11E,14Z)-(13S)-hydroperoxyoctadeca-9,11,14-trienoate, and 12,13-hydro-lyase.

Structural studies As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code PDB: 1U5U.

References

Esselman WJ, Clagett CO (1974). "Products of linoleic hydroperoxide-decomposing enzyme of alfalfa seed". J. Lipid Res. 15 (2): 173–8. doi:10.1016/S0022-2275(20)36821-8. PMID 4208994. Hamberg M (1987). "Mechanism of corn hydroperoxide isomerase - detection of 12,13(S)-oxido-9(Z),11-octadecadienoic acid". Biochim. Biophys. Acta. 920: 76–84. doi:10.1016/0005-2760(87)90313-4. Hamberg M (1988). "Biosynthesis of 12-oxo-10,15(Z)-phytodienoic acid: identification of an allene oxide cyclase". Biochem. Biophys. Res. Commun. 156 (1): 543–50. Bibcode:1988BBRC..156..543H. doi:10.1016/S0006-291X(88)80876-3. PMID 3178850.

Worked examples

Example 1 — a first encounter with Hydroperoxide dehydratase

Start with the simplest possible case. Write down what Hydroperoxide dehydratase 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 Hydroperoxide dehydratase 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 Hydroperoxide dehydratase 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 Hydroperoxide dehydratase

In research: Hydroperoxide dehydratase 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 Hydroperoxide dehydratase 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: Hydroperoxide dehydratase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 4.2.1, EC 4.2 stubs, Enzymes of known structure, so understanding it makes those chapters shorter.
In everyday life: Look for Hydroperoxide dehydratase 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 Hydroperoxide dehydratase in 20 minutes

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

Frequently asked questions

What is Hydroperoxide dehydratase in simple terms?

The enzyme hydroperoxide dehydratase (EC 4.2.1.92) catalyzes the chemical reaction (9Z,11E,14Z)-(13S)-hydroperoxyoctadeca-9,11,14-trienoate ⇌ {\displaystyle \rightleftharpoons } (9Z)-(13S)-12,13-epoxyoctadeca-9,11-dienoate + H2O This enzyme belongs to the family of lyases, specifically the hydro-ly…

Why does Hydroperoxide dehydratase 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 Hydroperoxide dehydratase?

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 Hydroperoxide dehydratase.