engineering

UDP-glucose—hexose-1-phosphate uridylyltransferase

UDP-glucose—hexose-1-phosphate uridylyltransferase 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 UDP-glucose—hexose-1-phosphate uridylyltransferase rather than just read about it. In short: In enzymology, an UDP-glucose—hexose-1-phosphate uridylyltransferase (EC 2.7.7.12) is an enzyme that catalyzes the chemical reaction UDP-glucose + alpha-D-galactose 1-phosphate ⇌ {\displaystyle \rightleftharpoons } alpha-D-glucose 1-phosphate + UDP-galactose Thus, the two substrates of this enzyme are UDP-glucose and alpha-D-galactose 1-phosphate, whereas its two products are alpha-D-glucose 1-phosphate and UDP-gala…

Key takeaways

UDP-glucose—hexose-1-phosphate uridylyltransferase belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect UDP-glucose—hexose-1-phosphate uridylyltransferase to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of UDP-glucose—hexose-1-phosphate uridylyltransferase from memory before moving on to harder problems.

Reference excerpt

In enzymology, an UDP-glucose—hexose-1-phosphate uridylyltransferase (EC 2.7.7.12) is an enzyme that catalyzes the chemical reaction

UDP-glucose + alpha-D-galactose 1-phosphate ⇌ {\displaystyle \rightleftharpoons } alpha-D-glucose 1-phosphate + UDP-galactose Thus, the two substrates of this enzyme are UDP-glucose and alpha-D-galactose 1-phosphate, whereas its two products are alpha-D-glucose 1-phosphate and UDP-galactose. This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is UDP-glucose:alpha-D-galactose-1-phosphate uridylyltransferase. Other names in common use include uridyl transferase, hexose-1-phosphate uridylyltransferase, uridyltransferase, and hexose 1-phosphate uridyltransferase. This enzyme participates in galactose metabolism and nucleotide sugars metabolism.

Structural studies As of late 2007, 4 structures have been solved for this class of enzymes, with PDB accession codes PDB: 1HXQ, PDB: 2H39, PDB: 2Q4H, and PDB: 2Q4L.

References

KALCKAR HM, BRAGANCA B, MUNCH-PETERSEN HM (1953). "Uridyl transferases and the formation of uridine diphosphogalactose". Nature. 172 (4388): 1038. doi:10.1038/1721038a0. PMID 13111247. S2CID 4273742. KURAHASHI K, SUGIMURA A (1960). "Purification and properties of galactose 1-phosphate uridyl transferase from Escherichia coli". J. Biol. Chem. 235 (4): 940–6. doi:10.1016/S0021-9258(18)69456-6. PMID 14412847. Mayes JS; Hansen RG (1966). "Galactose 1-phosphate uridyl transferase". Carbohydrate Metabolism. Methods Enzymol. Vol. 9. pp. 708–713. doi:10.1016/0076-6879(66)09143-2. ISBN 978-0-12-181809-8. Saito S, Ozutsumi M, Kurahashi K (1967). "Galactose 1-phosphate uridylyltransferase of Escherichia coli. II Further purification and characterization". J. Biol. Chem. 242 (10): 2362–8. doi:10.1016/S0021-9258(18)95970-3. PMID 5338129. SMITH EE, MILLS GT (1955). "The uridyl transferase of mammary gland". Biochim. Biophys. Acta. 18 (1): 152. doi:10.1016/0006-3002(55)90029-9. PMID 13260264.

Illustrations

Worked examples

Example 1 — a first encounter with UDP-glucose—hexose-1-phosphate uridylyltransferase

Start with the simplest possible case. Write down what UDP-glucose—hexose-1-phosphate uridylyltransferase 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 UDP-glucose—hexose-1-phosphate uridylyltransferase 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 UDP-glucose—hexose-1-phosphate uridylyltransferase 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 UDP-glucose—hexose-1-phosphate uridylyltransferase

In research: UDP-glucose—hexose-1-phosphate uridylyltransferase 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 UDP-glucose—hexose-1-phosphate uridylyltransferase 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: UDP-glucose—hexose-1-phosphate uridylyltransferase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 2.7.7, EC 2.7 stubs, Enzymes of known structure, so understanding it makes those chapters shorter.
In everyday life: Look for UDP-glucose—hexose-1-phosphate uridylyltransferase 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 UDP-glucose—hexose-1-phosphate uridylyltransferase in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what UDP-glucose—hexose-1-phosphate uridylyltransferase 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 UDP-glucose—hexose-1-phosphate uridylyltransferase in simple terms?

In enzymology, an UDP-glucose—hexose-1-phosphate uridylyltransferase (EC 2.7.7.12) is an enzyme that catalyzes the chemical reaction UDP-glucose + alpha-D-galactose 1-phosphate ⇌ {\displaystyle \rightleftharpoons } alpha-D-glucose 1-phosphate + UDP-galactose Thus, the two substrates of this enzyme…

Why does UDP-glucose—hexose-1-phosphate uridylyltransferase 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 UDP-glucose—hexose-1-phosphate uridylyltransferase?

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 UDP-glucose—hexose-1-phosphate uridylyltransferase.