engineering

Xyloglucan:xyloglucosyl transferase

Xyloglucan:xyloglucosyl transferase 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 Xyloglucan:xyloglucosyl transferase rather than just read about it. In short: In enzymology, a xyloglucan:xyloglucosyl transferase (EC 2.4.1.207) is an enzyme that catalyzes the chemical reaction in which a beta-(1,4) bond in the backbone of a xyloglucan in broken; the xyloglucanyl segment is then transferred to the O4 of the non-reducing terminal glucose residue of either xyloglucan or an oligosaccharide thereof. This enzyme belongs to the family of glycosyltransferases, specifically the hex…

Key takeaways

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

Reference excerpt

In enzymology, a xyloglucan:xyloglucosyl transferase (EC 2.4.1.207) is an enzyme that catalyzes the chemical reaction in which a beta-(1,4) bond in the backbone of a xyloglucan in broken; the xyloglucanyl segment is then transferred to the O4 of the non-reducing terminal glucose residue of either xyloglucan or an oligosaccharide thereof. This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is xyloglucan:xyloglucan xyloglucanotransferase. Other names in common use include endo-xyloglucan transferase, and xyloglucan endotransglycosylase.

Structural studies As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes PDB: 1UMZ and PDB: 1UN1.

References

Fry SC, Smith RC, Renwick KF, Martin DJ, Hodge SK, Matthews KJ (1992). "Xyloglucan endotransglycosylase, a new wall-loosening enzyme activity from plants". Biochem. J. 282 (Pt 3): 821–8. doi:10.1042/bj2820821. PMC 1130861. PMID 1554366. Nishitani K, Tominaga R (1992). "Endo-xyloglucan transferase, a novel class of glycosyltransferase that catalyzes transfer of a segment of xyloglucan molecule to another xyloglucan molecule". J. Biol. Chem. 267 (29): 21058–64. doi:10.1016/S0021-9258(19)36797-3. PMID 1400418. Foucher AL, McIntosh A, Douce G, Wastling J, Tait A, Turner CM (2006). "A proteomic analysis of arsenical drug resistance in Trypanosoma brucei". Proteomics. 6 (9): 2726–32. doi:10.1002/pmic.200500419. PMID 16526094. S2CID 24074942. Lorences EP, Fry, SC (1993). "Xyloglucan oligosaccharides with at least two alpha-D-xylose residues act as acceptor substrates for xyloglucan endotransglycosylase and promote the depolymerisation of xyloglucan". Plant Physiol. 88 (1): 105–112. Bibcode:1993PPlan..88..105L. doi:10.1111/j.1399-3054.1993.tb01767.x.

Worked examples

Example 1 — a first encounter with Xyloglucan:xyloglucosyl transferase

Start with the simplest possible case. Write down what Xyloglucan:xyloglucosyl transferase 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 Xyloglucan:xyloglucosyl transferase 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 Xyloglucan:xyloglucosyl transferase 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 Xyloglucan:xyloglucosyl transferase

In research: Xyloglucan:xyloglucosyl transferase 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 Xyloglucan:xyloglucosyl transferase 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: Xyloglucan:xyloglucosyl transferase 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 known structure, so understanding it makes those chapters shorter.
In everyday life: Look for Xyloglucan:xyloglucosyl transferase 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 Xyloglucan:xyloglucosyl transferase in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Xyloglucan:xyloglucosyl transferase 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 Xyloglucan:xyloglucosyl transferase in simple terms?

Why does Xyloglucan:xyloglucosyl transferase 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 Xyloglucan:xyloglucosyl transferase?

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 Xyloglucan:xyloglucosyl transferase.