engineering

N-acylneuraminate-9-phosphate synthase

N-acylneuraminate-9-phosphate synthase 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 N-acylneuraminate-9-phosphate synthase rather than just read about it. In short: In enzymology, a N-acylneuraminate-9-phosphate synthase (EC 2.5.1.57) is an enzyme that catalyzes the chemical reaction phosphoenolpyruvate + N-acyl-D-mannosamine 6-phosphate + H2O ⇌ {\displaystyle \rightleftharpoons } N-acylneuraminate 9-phosphate + phosphate The 3 substrates of this enzyme are phosphoenolpyruvate, N-acyl-D-mannosamine 6-phosphate, and H2O, whereas its two products are N-acylneuraminate 9-phosphate…

Key takeaways

N-acylneuraminate-9-phosphate synthase belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect N-acylneuraminate-9-phosphate synthase to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of N-acylneuraminate-9-phosphate synthase from memory before moving on to harder problems.

Reference excerpt

In enzymology, a N-acylneuraminate-9-phosphate synthase (EC 2.5.1.57) is an enzyme that catalyzes the chemical reaction

phosphoenolpyruvate + N-acyl-D-mannosamine 6-phosphate + H2O ⇌ {\displaystyle \rightleftharpoons } N-acylneuraminate 9-phosphate + phosphate The 3 substrates of this enzyme are phosphoenolpyruvate, N-acyl-D-mannosamine 6-phosphate, and H2O, whereas its two products are N-acylneuraminate 9-phosphate and phosphate. This enzyme belongs to the family of transferases, specifically those transferring aryl or alkyl groups other than methyl groups. The systematic name of this enzyme class is phosphoenolpyruvate:N-acyl-D-mannosamine-6-phosphate 1-(2-carboxy-2-oxoethyl)transferase. Other names in common use include N-acetylneuraminate 9-phosphate lyase, N-acetylneuraminate 9-phosphate sialic acid 9-phosphate synthase, N-acetylneuraminate 9-phosphate synthetase, N-acylneuraminate-9-phosphate pyruvate-lyase, (pyruvate-phosphorylating), and sialic acid 9-phosphate synthetase. This enzyme participates in aminosugars metabolism.

Structural studies As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code PDB: 1WVO.

References

Roseman S, Jourdian GW, Watson D, Rood R (1961). "Enzymatic synthesis of sialic acid 9-phosphates". Proc. Natl. Acad. Sci. USA. 47 (7): 958–961. Bibcode:1961PNAS...47..958R. doi:10.1073/pnas.47.7.958. PMC 221309. PMID 13743311. Watson DR, Jourdian GW, Roseman S (1966). "The sialic acids. 8. Sialic acid 9-phosphate synthetase". J. Biol. Chem. 241 (23): 5627–36. doi:10.1016/S0021-9258(18)96390-8. PMID 5928202. Nakata D, Close BE, Colley KJ, Matsuda T, Kitajima K (2000). "Molecular cloning and expression of the mouse N-acetylneuraminic acid 9-phosphate synthase which does not have deaminoneuraminic acid (KDN) 9-phosphate synthase activity". Biochem. Biophys. Res. Commun. 273 (2): 642–8. Bibcode:2000BBRC..273..642N. doi:10.1006/bbrc.2000.2983. PMID 10873658.

Worked examples

Example 1 — a first encounter with N-acylneuraminate-9-phosphate synthase

Start with the simplest possible case. Write down what N-acylneuraminate-9-phosphate synthase 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 N-acylneuraminate-9-phosphate synthase 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 N-acylneuraminate-9-phosphate synthase 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 N-acylneuraminate-9-phosphate synthase

In research: N-acylneuraminate-9-phosphate synthase 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 N-acylneuraminate-9-phosphate synthase 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: N-acylneuraminate-9-phosphate synthase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 2.5.1, Enzymes of known structure, Transferase stubs, so understanding it makes those chapters shorter.
In everyday life: Look for N-acylneuraminate-9-phosphate synthase 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 N-acylneuraminate-9-phosphate synthase in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what N-acylneuraminate-9-phosphate synthase 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 N-acylneuraminate-9-phosphate synthase in simple terms?

In enzymology, a N-acylneuraminate-9-phosphate synthase (EC 2.5.1.57) is an enzyme that catalyzes the chemical reaction phosphoenolpyruvate + N-acyl-D-mannosamine 6-phosphate + H2O ⇌ {\displaystyle \rightleftharpoons } N-acylneuraminate 9-phosphate + phosphate The 3 substrates of this enzyme are ph…

Why does N-acylneuraminate-9-phosphate synthase 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 N-acylneuraminate-9-phosphate synthase?

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 N-acylneuraminate-9-phosphate synthase.