engineering

Polyphosphate—glucose phosphotransferase

Polyphosphate—glucose phosphotransferase 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 Polyphosphate—glucose phosphotransferase rather than just read about it. In short: In enzymology, a polyphosphate-glucose phosphotransferase (EC 2.7.1.63) is an enzyme that catalyzes the chemical reaction. (phosphate)n + D-glucose ⇌ {\displaystyle \rightleftharpoons } (phosphate)n-1 + D-glucose 6-phosphate Thus, the two substrates of this enzyme are (phosphate)n and D-glucose, whereas its two products are (phosphate)n-1 and D-glucose 6-phosphate.

Key takeaways

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

Reference excerpt

In enzymology, a polyphosphate-glucose phosphotransferase (EC 2.7.1.63) is an enzyme that catalyzes the chemical reaction.

(phosphate)n + D-glucose ⇌ {\displaystyle \rightleftharpoons } (phosphate)n-1 + D-glucose 6-phosphate Thus, the two substrates of this enzyme are (phosphate)n and D-glucose, whereas its two products are (phosphate)n-1 and D-glucose 6-phosphate. This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is polyphosphate:D-glucose 6-phosphotransferase. Other names in common use include polyphosphate glucokinase, polyphosphate-D-(+)-glucose-6-phosphotransferase, and polyphosphate-glucose 6-phosphotransferase. This enzyme participates in glycolysis / gluconeogenesis. It employs one cofactor, neutral salt.

References

Szymona M (1962). "Purification and properties of a new hexokinase utilizing inorganic pyrophosphate". Acta Biochim. Pol. 9: 165–181. Szymona M, Ostrowski W (May 1964). "Inorganic polyphosphate glucokinase of Mycobacterium phlei". Biochimica et Biophysica Acta (BBA) - Specialized Section on Enzymological Subjects. 85 (2): 283–95. doi:10.1016/0926-6569(64)90249-4. PMID 14212975.

Worked examples

Example 1 — a first encounter with Polyphosphate—glucose phosphotransferase

Start with the simplest possible case. Write down what Polyphosphate—glucose phosphotransferase 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 Polyphosphate—glucose phosphotransferase 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 Polyphosphate—glucose phosphotransferase 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 Polyphosphate—glucose phosphotransferase

In research: Polyphosphate—glucose phosphotransferase 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 Polyphosphate—glucose phosphotransferase 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: Polyphosphate—glucose phosphotransferase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 2.7.1, EC 2.7 stubs, Enzymes of known structure, so understanding it makes those chapters shorter.
In everyday life: Look for Polyphosphate—glucose phosphotransferase 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 Polyphosphate—glucose phosphotransferase in 20 minutes

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

Frequently asked questions

What is Polyphosphate—glucose phosphotransferase in simple terms?

In enzymology, a polyphosphate-glucose phosphotransferase (EC 2.7.1.63) is an enzyme that catalyzes the chemical reaction. (phosphate)n + D-glucose ⇌ {\displaystyle \rightleftharpoons } (phosphate)n-1 + D-glucose 6-phosphate Thus, the two substrates of this enzyme are (phosphate)n and D-glucose, wh…

Why does Polyphosphate—glucose phosphotransferase 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 Polyphosphate—glucose phosphotransferase?

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 Polyphosphate—glucose phosphotransferase.