engineering

Sulfite dehydrogenase

Sulfite 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 Sulfite dehydrogenase rather than just read about it. In short: In enzymology, a sulfite dehydrogenase (EC 1.8.2.1) is an enzyme that catalyzes the chemical reaction sulfite + 2 ferricytochrome c + H2O ⇌ {\displaystyle \rightleftharpoons } sulfate + 2 ferrocytochrome c + 2 H+ The 3 substrates of this enzyme are sulfite, ferricytochrome c, and H2O, whereas its 3 products are sulfate, ferrocytochrome c, and H+. This enzyme belongs to the family of oxidoreductases, specifically tho…

Key takeaways

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

Reference excerpt

In enzymology, a sulfite dehydrogenase (EC 1.8.2.1) is an enzyme that catalyzes the chemical reaction

sulfite + 2 ferricytochrome c + H2O ⇌ {\displaystyle \rightleftharpoons } sulfate + 2 ferrocytochrome c + 2 H+ The 3 substrates of this enzyme are sulfite, ferricytochrome c, and H2O, whereas its 3 products are sulfate, ferrocytochrome c, and H+. This enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donor with a cytochrome as acceptor. The systematic name of this enzyme class is sulfite:ferricytochrome-c oxidoreductase. Other names in common use include sulfite cytochrome c reductase, sulfite-cytochrome c oxidoreductase, and sulfite oxidase. This enzyme participates in sulfur metabolism.

References

Charles AM, Suzuki I (1966). "Purification and properties of sulfite:cytochrome c oxidoreductase from Thiobacillus novellus". Biochim. Biophys. Acta. 128 (3): 522–534. doi:10.1016/0926-6593(66)90013-0. Lu WP, Kelly DP (1984). "Properties and role of sulphite:cytochrome c oxidoreductase purified from Thiobacillus versutus (A2)". J. Gen. Microbiol. 130 (7): 1683–1692. doi:10.1099/00221287-130-7-1683.

Illustrations

Worked examples

Example 1 — a first encounter with Sulfite dehydrogenase

Start with the simplest possible case. Write down what Sulfite 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 Sulfite 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 Sulfite 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 Sulfite dehydrogenase

In research: Sulfite 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 Sulfite 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: Sulfite dehydrogenase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 1.8.2, Enzymes of unknown structure, Oxidoreductase stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Sulfite 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 Sulfite dehydrogenase in 20 minutes

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

Frequently asked questions

What is Sulfite dehydrogenase in simple terms?

In enzymology, a sulfite dehydrogenase (EC 1.8.2.1) is an enzyme that catalyzes the chemical reaction sulfite + 2 ferricytochrome c + H2O ⇌ {\displaystyle \rightleftharpoons } sulfate + 2 ferrocytochrome c + 2 H+ The 3 substrates of this enzyme are sulfite, ferricytochrome c, and H2O, whereas its 3…

Why does Sulfite 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 Sulfite 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 Sulfite dehydrogenase.