engineering

Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase

Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase 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 Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase rather than just read about it. In short: In enzymology, a sucrose-1,6-alpha-glucan 3(6)-alpha-glucosyltransferase (EC 2.4.1.125) is an enzyme that catalyzes the chemical reaction sucrose + (1,6-alpha-D-glucosyl)n ⇌ {\displaystyle \rightleftharpoons } D-fructose + (1,6-alpha-D-glucosyl)n+1 Thus, the two substrates of this enzyme are sucrose and (1,6-alpha-D-glucosyl)n, whereas its two products are D-fructose and (1,6-alpha-D-glucosyl)n+1. This enzyme belong…

Key takeaways

Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase from memory before moving on to harder problems.

Reference excerpt

In enzymology, a sucrose-1,6-alpha-glucan 3(6)-alpha-glucosyltransferase (EC 2.4.1.125) is an enzyme that catalyzes the chemical reaction

sucrose + (1,6-alpha-D-glucosyl)n ⇌ {\displaystyle \rightleftharpoons } D-fructose + (1,6-alpha-D-glucosyl)n+1 Thus, the two substrates of this enzyme are sucrose and (1,6-alpha-D-glucosyl)n, whereas its two products are D-fructose and (1,6-alpha-D-glucosyl)n+1. This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is sucrose:1,6-alpha-D-glucan 3(6)-alpha-D-glucosyltransferase. Other names in common use include water-soluble-glucan synthase, GTF-S, sucrose-1,6-alpha-glucan 3(6)-alpha-glucosyltransferase, sucrose:1,6-alpha-D-glucan 3-alpha- and 6-alpha-glucosyltransferase, sucrose:1,6-, 1,3-alpha-D-glucan 3-alpha- and, and 6-alpha-D-glucosyltransferase.

References

Mukasa H, Shimamura A, Tsumori H (1982). "Purification and characterization of basic glucosyltransferase from Streptococcus mutans serotype c". Biochim. Biophys. Acta. 719 (1): 81–9. doi:10.1016/0304-4165(82)90310-5. PMID 6216919. Shimamura A, Tsumori H, Mukasa H (1982). "Purification and properties of Streptococcus mutans extracellular glucosyltransferase". Biochim. Biophys. Acta. 702 (1): 72–80. doi:10.1016/0167-4838(82)90028-0. PMID 6461359. Tsumori H, Shimamura A, Mukasa H (1985). "Purification and properties of extracellular glucosyltransferase synthesizing 1,6-, 1,3-alpha-D-glucan from Streptococcus mutans serotype a". J. Gen. Microbiol. 131 (12): 3347–53. doi:10.1099/00221287-131-12-3347. PMID 2937877.

Worked examples

Example 1 — a first encounter with Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase

Start with the simplest possible case. Write down what Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase 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 Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase 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 Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase 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 Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase

In research: Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase 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 Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase 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: Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 2.4.1, EC 2.4 stubs, Enzymes of unknown structure, so understanding it makes those chapters shorter.
In everyday life: Look for Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase 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 Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase 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 Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase in simple terms?

In enzymology, a sucrose-1,6-alpha-glucan 3(6)-alpha-glucosyltransferase (EC 2.4.1.125) is an enzyme that catalyzes the chemical reaction sucrose + (1,6-alpha-D-glucosyl)n ⇌ {\displaystyle \rightleftharpoons } D-fructose + (1,6-alpha-D-glucosyl)n+1 Thus, the two substrates of this enzyme are sucros…

Why does Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase 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 Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase?

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 Sucrose—1,6-alpha-glucan 3(6)-alpha-glucosyltransferase.