engineering

Propanediol dehydratase

Propanediol 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 Propanediol dehydratase rather than just read about it. In short: The enzyme propanediol dehydratase (EC 4.2.1.28) catalyzes the chemical reaction propane-1,2-diol ⇌ {\displaystyle \rightleftharpoons } propanal + 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 propane-1,2-diol hydro-lyase (propanal-forming).

Key takeaways

Propanediol 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 Propanediol dehydratase to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Propanediol dehydratase from memory before moving on to harder problems.

Reference excerpt

The enzyme propanediol dehydratase (EC 4.2.1.28) catalyzes the chemical reaction

propane-1,2-diol ⇌ {\displaystyle \rightleftharpoons } propanal + 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 propane-1,2-diol hydro-lyase (propanal-forming). Other names in common use include meso-2,3-butanediol dehydrase, diol dehydratase, DL-1,2-propanediol hydro-lyase, diol dehydrase, adenosylcobalamin-dependent diol dehydratase, propanediol dehydrase, coenzyme B12-dependent diol dehydrase, 1,2-propanediol dehydratase, dioldehydratase, and propane-1,2-diol hydro-lyase. This enzyme participates in glycerolipid metabolism. It employs one cofactor, cobamide.

Structural studies As of late 2007, 7 structures have been solved for this class of enzymes, with PDB accession codes PDB: 1DIO, PDB: 1EEX, PDB: 1EGM, PDB: 1EGV, PDB: 1IWB, PDB: 1UC4, and PDB: 1UC5.

References

ABELES RH, LEE HA (1961). "An intramolecular oxidation-reduction requiring a cobamide coenzyme". J. Biol. Chem. 236 (8): 2347–50. doi:10.1016/S0021-9258(18)64083-9. PMID 13680987. Forage RG, Foster MA (1982). "Glycerol fermentation in Klebsiella pneumoniae: functions of the coenzyme B12-dependent glycerol and diol dehydratases". J. Bacteriol. 149 (2): 413–9. doi:10.1128/JB.149.2.413-419.1982. PMC 216523. PMID 7035429. LEE HA, ABELES RH (1963). "Purification and properties of dioldehydrase, and enzyme requiring a cobamide coenzyme". J. Biol. Chem. 238 (7): 2367–73. doi:10.1016/S0021-9258(19)67979-2. PMID 13929077.

Worked examples

Example 1 — a first encounter with Propanediol dehydratase

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

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

Read the reference excerpt below once, without taking notes.
Close the page and write down what Propanediol 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.
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Frequently asked questions

What is Propanediol dehydratase in simple terms?

The enzyme propanediol dehydratase (EC 4.2.1.28) catalyzes the chemical reaction propane-1,2-diol ⇌ {\displaystyle \rightleftharpoons } propanal + H2O This enzyme belongs to the family of lyases, specifically the hydro-lyases, which cleave carbon-oxygen bonds. The systematic name of this enzyme cla…

Why does Propanediol 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 Propanediol 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 Propanediol dehydratase.