engineering

Phenylpyruvate tautomerase

Phenylpyruvate tautomerase 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 Phenylpyruvate tautomerase rather than just read about it. In short: In enzymology, phenylpyruvate tautomerase or Macrophage migration inhibitory factor (EC 5.3.2.1) is an enzyme that catalyzes the chemical reaction keto-phenylpyruvate ⇌ {\displaystyle \rightleftharpoons } enol-phenylpyruvate Phenylpyruvate tautomerase has also been found to exhibit the same keto-enol tautomerism for 4-Hydroxyphenylpyruvic acid, which is structurally similar to phenylpyruvate but contains an addition…

Key takeaways

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

Reference excerpt

In enzymology, phenylpyruvate tautomerase or Macrophage migration inhibitory factor (EC 5.3.2.1) is an enzyme that catalyzes the chemical reaction keto-phenylpyruvate ⇌ {\displaystyle \rightleftharpoons } enol-phenylpyruvate Phenylpyruvate tautomerase has also been found to exhibit the same keto-enol tautomerism for 4-Hydroxyphenylpyruvic acid, which is structurally similar to phenylpyruvate but contains an additional hydroxyl moiety in the para position of the aromatic ring. This enzyme belongs to the family of isomerases, specifically those intramolecular oxidoreductases interconverting keto- and enol-groups. The systematic name of this enzyme class is phenylpyruvate keto---enol-isomerase. This enzyme is also called phenylpyruvic keto-enol isomerase. This enzyme participates in tyrosine metabolism and phenylalanine metabolism.

Structural studies As of late 2007, 7 structures have been solved for this class of enzymes, with PDB accession codes PDB: 1GYJ, PDB: 1GYX, PDB: 1GYY, PDB: 2GDG, PDB: 2OOH, PDB: 2OOW, and PDB: 2OOZ.

References

Blasi F, Fragomele F, Covelli I (1969). "Thyroidal phenylpyruvate tautomerase. Isolation and characterization". J. Biol. Chem. 244 (18): 4864–70. doi:10.1016/S0021-9258(18)94283-3. PMID 5824560. Knox WE (1955). [38] Enzymes involved in conversion of tyrosine to acetoacetate. Methods Enzymol. Vol. 2. pp. 289–295. doi:10.1016/s0076-6879(55)02202-7. ISBN 978-0-12-181802-9. {{cite book}}: ISBN / Date incompatibility (help) KNOX WE, PITT BM (1957). "Enzymic catalysis of the keto-enol tautomerization of phenylpyruvic acids". J. Biol. Chem. 225 (2): 675–88. doi:10.1016/S0021-9258(18)64866-5. PMID 13416270.

Worked examples

Example 1 — a first encounter with Phenylpyruvate tautomerase

Start with the simplest possible case. Write down what Phenylpyruvate tautomerase 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 Phenylpyruvate tautomerase 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 Phenylpyruvate tautomerase 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 Phenylpyruvate tautomerase

In research: Phenylpyruvate tautomerase 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 Phenylpyruvate tautomerase 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: Phenylpyruvate tautomerase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 5.3.2, Enzymes of known structure, Isomerase stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Phenylpyruvate tautomerase 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 “Phenylpyruvate tautomerase” →

Affiliate

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

How to study Phenylpyruvate tautomerase in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Phenylpyruvate tautomerase 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 Phenylpyruvate tautomerase out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Phenylpyruvate tautomerase in simple terms?

Why does Phenylpyruvate tautomerase 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 Phenylpyruvate tautomerase?

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 Phenylpyruvate tautomerase.