engineering

Tetrachloroethene reductive dehalogenase

Tetrachloroethene reductive dehalogenase 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 Tetrachloroethene reductive dehalogenase rather than just read about it. In short: Tetrachloroethene reductive dehalogenase (EC 1.21.99.5, previously 1.97.1.8) is an enzyme that catalyzes some chemical reactions which allow bacteria to metabolise chlorinated hydrocarbons. For example, Dehalobacter restrictus converts tetrachloroethylene to trichloroethylene: The enzyme can also convert trichloroethylene into dichloroethylene and requires an electron acceptor, which is believed to be menaquinone.

Key takeaways

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

Reference excerpt

Tetrachloroethene reductive dehalogenase (EC 1.21.99.5, previously 1.97.1.8) is an enzyme that catalyzes some chemical reactions which allow bacteria to metabolise chlorinated hydrocarbons. For example, Dehalobacter restrictus converts tetrachloroethylene to trichloroethylene:

The enzyme can also convert trichloroethylene into dichloroethylene and requires an electron acceptor, which is believed to be menaquinone. This enzyme is an oxidoreductase with systematic name acceptor:trichloroethene oxidoreductase (chlorinating). This enzyme is also called tetrachloroethene reductase. It is one member of a family of enzymes including trichloroethene dehalogenase and vinyl chloride dehalogenase. Reductive dehalogenases are key enzymes for anaerobic respiratory process, termed organohalide respiration, and hence can be used for bioremediation.

References

Illustrations

Worked examples

Example 1 — a first encounter with Tetrachloroethene reductive dehalogenase

Start with the simplest possible case. Write down what Tetrachloroethene reductive dehalogenase 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 Tetrachloroethene reductive dehalogenase 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 Tetrachloroethene reductive dehalogenase 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 Tetrachloroethene reductive dehalogenase

In research: Tetrachloroethene reductive dehalogenase 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 Tetrachloroethene reductive dehalogenase 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: Tetrachloroethene reductive dehalogenase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 1.97.1, Enzymes of unknown structure, so understanding it makes those chapters shorter.
In everyday life: Look for Tetrachloroethene reductive dehalogenase 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 Tetrachloroethene reductive dehalogenase in 20 minutes

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

Frequently asked questions

What is Tetrachloroethene reductive dehalogenase in simple terms?

Why does Tetrachloroethene reductive dehalogenase 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 Tetrachloroethene reductive dehalogenase?

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 Tetrachloroethene reductive dehalogenase.