ArticleslgStudy

biology

Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase

Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase is a biology 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 Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase rather than just read about it. In short: In enzymology, a glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase (EC 2.4.1.122) is an enzyme that catalyzes the chemical reaction UDP-galactose + glycoprotein N-acetyl-D-galactosamine ⇌ {\displaystyle \rightleftharpoons } UDP + glycoprotein D-galactosyl-1,3-N-acetyl-D-galactosamine Thus, the two substrates of this enzyme are UDP-galactose and glycoprotein N-acetyl-D-galactosamine, whereas its two pro…

Key takeaways

  • Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase from memory before moving on to harder problems.

Reference excerpt

In enzymology, a glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase (EC 2.4.1.122) is an enzyme that catalyzes the chemical reaction

UDP-galactose + glycoprotein N-acetyl-D-galactosamine ⇌ {\displaystyle \rightleftharpoons } UDP + glycoprotein D-galactosyl-1,3-N-acetyl-D-galactosamine Thus, the two substrates of this enzyme are UDP-galactose and glycoprotein N-acetyl-D-galactosamine, whereas its two products are UDP and glycoprotein D-galactosyl-1,3-N-acetyl-D-galactosamine. This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-galactose:glycoprotein-N-acetyl-D-galactosamine 3-beta-D-galactosyltransferase. This enzyme is also called uridine diphosphogalactose-mucin beta-(1->3)-galactosyltransferase. This enzyme participates in O-glycan biosynthesis and glycan structures - biosynthesis 1.

See also C1GALT1

References

Hesford FJ, Berger EG, Van den Eijnden DH (1981). "Identification of the product formed by human erythrocyte galactosyltransferase". Biochim. Biophys. Acta. 659 (2): 302–11. doi:10.1016/0005-2744(81)90056-5. PMID 6789880. Mendicino J, Sivakami S, Davila M, Chandrasekaran EV (1982). "Purification and properties of UDP-gal:N-acetylgalactosaminide mucin: beta 1,3-galactosyltransferase from swine trachea mucosa". J. Biol. Chem. 257 (7): 3987–94. doi:10.1016/S0021-9258(18)34880-4. PMID 6801057. Schachter H, Narasimhan S, Gleeson P, Vella G (1983). "Glycosyltransferases involved in elongation of N-glycosidically linked oligosaccharides of the complex or N-acetyllactosamine type". Biomembranes Part L: Membrane Biogenesis: Processing and Recycling. Methods Enzymol. Vol. 98. pp. 98–134. doi:10.1016/0076-6879(83)98143-0. ISBN 978-0-12-181998-9. PMID 6366476.

Worked examples

Example 1 — a first encounter with Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase

Start with the simplest possible case. Write down what Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase 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 Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase 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 Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase

In research
Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase appears in biology 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 Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase 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
Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase 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 Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase 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.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase in simple terms?

In enzymology, a glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase (EC 2.4.1.122) is an enzyme that catalyzes the chemical reaction UDP-galactose + glycoprotein N-acetyl-D-galactosamine ⇌ {\displaystyle \rightleftharpoons } UDP + glycoprotein D-galactosyl-1,3-N-acetyl-D-galactosamine…

Why does Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase matter?

Because it connects several biology 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 Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase?

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 Glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase.

Tags

  • EC 2.4.1
  • EC 2.4 stubs
  • Enzymes of unknown structure

Keep exploring