engineering

Nucleoside-triphosphate diphosphatase

Nucleoside-triphosphate diphosphatase 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-triphosphate diphosphatase rather than just read about it. In short: In enzymology, a nucleoside-triphosphate diphosphatase (EC 3.6.1.19) is an enzyme that catalyzes the chemical reaction a nucleoside triphosphate + H2O ⇌ {\displaystyle \rightleftharpoons } a nucleotide + diphosphate Thus, the two substrates of this enzyme are nucleoside triphosphate and H2O, whereas its two products are nucleotide and diphosphate. This enzyme belongs to the family of hydrolases, specifically those a…

Key takeaways

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Reference excerpt

In enzymology, a nucleoside-triphosphate diphosphatase (EC 3.6.1.19) is an enzyme that catalyzes the chemical reaction

a nucleoside triphosphate + H2O ⇌ {\displaystyle \rightleftharpoons } a nucleotide + diphosphate Thus, the two substrates of this enzyme are nucleoside triphosphate and H2O, whereas its two products are nucleotide and diphosphate. 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 nucleoside-triphosphate diphosphohydrolase. This enzyme is also called nucleoside-triphosphate pyrophosphatase. This enzyme participates in purine metabolism and pyrimidine metabolism. For example, enzyme deoxyribonucleoside triphosphate pyrophosphatase, encoded by YJR069C in S. cerevisiae and exhibiting (d)ITPase and (d)XTPase activities, hydrolyses ITP, dITP, XTP and dXTP releasing pyrophosphate and IMP, dIMP, XMP and dXMP, respectively.

Structural studies As of late 2007, 5 structures have been solved for this class of enzymes, with PDB accession codes PDB: 1V7R, PDB: 2CAR, PDB: 2E5X, PDB: 2I5D, and PDB: 2J4E.

References

Chern CJ, MacDonald AB, Morris AJ (1969). "Purification and properties of a nucleoside triphosphate pyrophosphohydrolase from red cells of the rabbit". J. Biol. Chem. 244 (20): 5489–95. doi:10.1016/S0021-9258(18)63590-2. PMID 4310599.

Worked examples

Example 1 — a first encounter with Nucleoside-triphosphate diphosphatase

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

In research: Nucleoside-triphosphate diphosphatase 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-triphosphate diphosphatase 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-triphosphate diphosphatase 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-triphosphate diphosphatase 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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Frequently asked questions

What is Nucleoside-triphosphate diphosphatase in simple terms?

In enzymology, a nucleoside-triphosphate diphosphatase (EC 3.6.1.19) is an enzyme that catalyzes the chemical reaction a nucleoside triphosphate + H2O ⇌ {\displaystyle \rightleftharpoons } a nucleotide + diphosphate Thus, the two substrates of this enzyme are nucleoside triphosphate and H2O, wherea…

Why does Nucleoside-triphosphate diphosphatase 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-triphosphate diphosphatase?

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-triphosphate diphosphatase.