engineering

Lactaldehyde reductase

Lactaldehyde reductase 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 Lactaldehyde reductase rather than just read about it. In short: In enzymology, lactaldehyde reductase (EC 1.1.1.77) is an enzyme that catalyzes two chemical reactions Each individual reaction is stereospecific so that when the substrate of the enzyme is (R)-propane-1,2-diol it produces (R)-lactaldehyde but the enantiomeric substrate (S)-propane-1,2-diol gives only (S)-lactaldehyde. The enzyme's cofactor is nicotinamide adenine dinucleotide (NAD+), which is converted to NADH, and…

Key takeaways

Lactaldehyde reductase belongs to engineering; place it in that map before memorising details.
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Reproduce the core statement of Lactaldehyde reductase from memory before moving on to harder problems.

Reference excerpt

In enzymology, lactaldehyde reductase (EC 1.1.1.77) is an enzyme that catalyzes two chemical reactions

Each individual reaction is stereospecific so that when the substrate of the enzyme is (R)-propane-1,2-diol it produces (R)-lactaldehyde but the enantiomeric substrate (S)-propane-1,2-diol gives only (S)-lactaldehyde. The enzyme's cofactor is nicotinamide adenine dinucleotide (NAD+), which is converted to NADH, and also releases a proton. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is (R)[or (S)]-propane-1,2-diol:NAD+ oxidoreductase. Other names in common use include propanediol:nicotinamide adenine dinucleotide (NAD+) oxidoreductase, and L-lactaldehyde:propanediol oxidoreductase. This enzyme participates in pyruvate metabolism and glyoxylate and dicarboxylate metabolism.

Structural studies As of late 2007, 3 structures have been solved for this class of enzymes, with PDB accession codes PDB: 1RRM, PDB: 2BI4, and PDB: 2BL4.

References

Illustrations

Worked examples

Example 1 — a first encounter with Lactaldehyde reductase

Start with the simplest possible case. Write down what Lactaldehyde reductase 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 Lactaldehyde reductase 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 Lactaldehyde reductase 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 Lactaldehyde reductase

In research: Lactaldehyde reductase 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 Lactaldehyde reductase 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: Lactaldehyde reductase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 1.1.1, EC 1.1.1 stubs, Enzymes of known structure, so understanding it makes those chapters shorter.
In everyday life: Look for Lactaldehyde reductase 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 Lactaldehyde reductase in 20 minutes

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Frequently asked questions

What is Lactaldehyde reductase in simple terms?

In enzymology, lactaldehyde reductase (EC 1.1.1.77) is an enzyme that catalyzes two chemical reactions Each individual reaction is stereospecific so that when the substrate of the enzyme is (R)-propane-1,2-diol it produces (R)-lactaldehyde but the enantiomeric substrate (S)-propane-1,2-diol gives o…

Why does Lactaldehyde reductase 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 Lactaldehyde reductase?

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 Lactaldehyde reductase.