engineering

Nucleoside-triphosphatase

Nucleoside-triphosphatase 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 Nucleoside-triphosphatase rather than just read about it. In short: In enzymology, a nucleoside-triphosphatase (NTPase) (EC 3.6.1.15) is an enzyme that catalyzes the chemical reaction NTP + H2O ⇌ {\displaystyle \rightleftharpoons } NDP + phosphate Thus, the two substrates of this enzyme are NTP and H2O, whereas its two products are NDP and phosphate. This enzyme belongs to the family of hydrolases, specifically those acting on acid anhydrides in phosphorus-containing anhydrides.

Key takeaways

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

Reference excerpt

In enzymology, a nucleoside-triphosphatase (NTPase) (EC 3.6.1.15) is an enzyme that catalyzes the chemical reaction

NTP + H2O ⇌ {\displaystyle \rightleftharpoons } NDP + phosphate Thus, the two substrates of this enzyme are NTP and H2O, whereas its two products are NDP and phosphate. This enzyme belongs to the family of hydrolases, specifically those acting on acid anhydrides in phosphorus-containing anhydrides. The systematic name of this enzyme class is unspecific diphosphate phosphohydrolase. Other names in common use include nucleoside triphosphate phosphohydrolase, nucleoside-5-triphosphate phosphohydrolase, and nucleoside 5-triphosphatase. This enzyme participates in purine metabolism and thiamine metabolism.

Structural studies As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code PDB: 2I3B.

References

Brightwell R, Tappel AL (1968). "Lysosomal acid pyrophosphatase and acid phosphatase". Arch. Biochem. Biophys. 124 (1): 333–43. doi:10.1016/0003-9861(68)90335-4. PMID 5661608. LEWIS M, WEISSMAN S (1965). "Properties of a soluble nucleoside triphosphatase activity in mammalian liver". Arch. Biochem. Biophys. 109 (3): 490–8. doi:10.1016/0003-9861(65)90393-0. PMID 14320490. Matsushita S, Raacke ID (1968). "Purification of nucleoside triphosphatases from pea seedling ribosomes". Biochim. Biophys. Acta. 166 (3): 707–10. doi:10.1016/0005-2787(68)90380-8. PMID 4301913.

Illustrations

Worked examples

Example 1 — a first encounter with Nucleoside-triphosphatase

Start with the simplest possible case. Write down what Nucleoside-triphosphatase 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 Nucleoside-triphosphatase 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 Nucleoside-triphosphatase 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 Nucleoside-triphosphatase

In research: Nucleoside-triphosphatase 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 Nucleoside-triphosphatase 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: Nucleoside-triphosphatase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 3.6.1, EC 3.6 stubs, Enzymes of known structure, so understanding it makes those chapters shorter.
In everyday life: Look for Nucleoside-triphosphatase 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 Nucleoside-triphosphatase in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Nucleoside-triphosphatase 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 Nucleoside-triphosphatase in simple terms?

In enzymology, a nucleoside-triphosphatase (NTPase) (EC 3.6.1.15) is an enzyme that catalyzes the chemical reaction NTP + H2O ⇌ {\displaystyle \rightleftharpoons } NDP + phosphate Thus, the two substrates of this enzyme are NTP and H2O, whereas its two products are NDP and phosphate. This enzyme be…

Why does Nucleoside-triphosphatase 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 Nucleoside-triphosphatase?

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 Nucleoside-triphosphatase.