engineering

K+-transporting ATPase

K+-transporting ATPase 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 K+-transporting ATPase rather than just read about it. In short: In enzymology, a K+-transporting ATPase (EC 3.6.3.12) is an enzyme that catalyzes the chemical reaction ATP + H2O + K+out ⇌ ADP + phosphate + K+in The 3 substrates of this enzyme are ATP, H2O, and K+, whereas its 3 products are ADP, phosphate, and K+. This enzyme belongs to the family of hydrolases, specifically those acting on acid anhydrides to catalyse transmembrane movement of substances.

Key takeaways

K+-transporting ATPase belongs to engineering; place it in that map before memorising details.
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Reference excerpt

In enzymology, a K+-transporting ATPase (EC 3.6.3.12) is an enzyme that catalyzes the chemical reaction

ATP + H2O + K+out ⇌ ADP + phosphate + K+in The 3 substrates of this enzyme are ATP, H2O, and K+, whereas its 3 products are ADP, phosphate, and K+. This enzyme belongs to the family of hydrolases, specifically those acting on acid anhydrides to catalyse transmembrane movement of substances. The systematic name of this enzyme class is ATP phosphohydrolase (K+-importing). Other names in common use include K+-translocating Kdp-ATPase, and multi-subunit K+-transport ATPase. This enzyme participates in two-component system - general.

Structural studies As of late 2007, 4 structures have been solved for this class of enzymes, with PDB accession codes PDB: 1SVJ, PDB: 1U7Q, PDB: 2A00, and PDB: 2A29.

References

Siebers A, Altendorf K (1989). "Characterization of the phosphorylated intermediate of the K+-translocating Kdp-ATPase from Escherichia coli". J. Biol. Chem. 264 (10): 5831–8. doi:10.1016/S0021-9258(18)83625-0. PMID 2522440. Gassel M, Siebers A, Epstein W, Altendorf K (1998). "Assembly of the Kdp complex, the multi-subunit K+-transport ATPase of Escherichia coli". Biochim. Biophys. Acta. 1415 (1): 77–84. doi:10.1016/S0005-2736(98)00179-5. PMID 9858692.

Worked examples

Example 1 — a first encounter with K+-transporting ATPase

Start with the simplest possible case. Write down what K+-transporting ATPase 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 K+-transporting ATPase 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 K+-transporting ATPase 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 K+-transporting ATPase

In research: K+-transporting ATPase 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 K+-transporting ATPase 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: K+-transporting ATPase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 3.6.3, EC 3.6 stubs, Enzymes of known structure, so understanding it makes those chapters shorter.
In everyday life: Look for K+-transporting ATPase 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 K+-transporting ATPase in simple terms?

In enzymology, a K+-transporting ATPase (EC 3.6.3.12) is an enzyme that catalyzes the chemical reaction ATP + H2O + K+out ⇌ ADP + phosphate + K+in The 3 substrates of this enzyme are ATP, H2O, and K+, whereas its 3 products are ADP, phosphate, and K+. This enzyme belongs to the family of hydrolases…

Why does K+-transporting ATPase 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 K+-transporting ATPase?

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 K+-transporting ATPase.