engineering

Indole-3-glycerol-phosphate lyase

Indole-3-glycerol-phosphate lyase 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 Indole-3-glycerol-phosphate lyase rather than just read about it. In short: The enzyme indole-3-glycerol-phosphate lyase (EC 4.1.2.8) catalyzes the chemical reaction (1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate ⇌ {\displaystyle \rightleftharpoons } indole + D-glyceraldehyde 3-phosphate This enzyme belongs to the family of lyases, specifically the aldehyde-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is (1S,2R)-1-C-(indol-3-yl)glycerol-3-phosphate D-glyc…

Key takeaways

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

Reference excerpt

The enzyme indole-3-glycerol-phosphate lyase (EC 4.1.2.8) catalyzes the chemical reaction

(1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate ⇌ {\displaystyle \rightleftharpoons } indole + D-glyceraldehyde 3-phosphate This enzyme belongs to the family of lyases, specifically the aldehyde-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is (1S,2R)-1-C-(indol-3-yl)glycerol-3-phosphate D-glyceraldehyde-3-phosphate-lyase (indole-forming). Other names in common use include tryptophan synthase alpha, TSA, indoleglycerolphosphate aldolase, indole glycerol phosphate hydrolase, indole synthase, indole-3-glycerolphosphate D-glyceraldehyde-3-phosphate-lyase, indole-3-glycerol phosphate lyase, IGL, BX1, (1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate, and D-glyceraldehyde-3-phosphate-lyase. This enzyme participates in benzoxazinone biosynthesis.

References

YANOFSKY C (1956). "The enzymatic conversion of anthranilic acid to indole". J. Biol. Chem. 223 (1): 171–84. doi:10.1016/S0021-9258(18)65126-9. PMID 13376586. SP, Simcox K; Gierl A (1997). "Analysis of a chemical plant defense mechanism in grasses". Science. 277 (5326): 696–699. doi:10.1126/science.277.5326.696. PMID 9235894. Frey M, Stettner C, Pare PW, Schmelz EA, Tumlinson JH, Gierl A (2000). "An herbivore elicitor activates the gene for indole emission in maize". Proc. Natl. Acad. Sci. U.S.A. 97 (26): 14801–6. Bibcode:2000PNAS...9714801F. doi:10.1073/pnas.260499897. PMC 18999. PMID 11106389. Melanson D, Chilton MD, Masters-Moore D, Chilton WS (1997). "A deletion in an indole synthase gene is responsible for the DIMBOA-deficient phenotype of bxbx maize". Proc. Natl. Acad. Sci. U.S.A. 94 (24): 13345–50. Bibcode:1997PNAS...9413345M. doi:10.1073/pnas.94.24.13345. PMC 24311. PMID 9371848.

Worked examples

Example 1 — a first encounter with Indole-3-glycerol-phosphate lyase

Start with the simplest possible case. Write down what Indole-3-glycerol-phosphate lyase 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 Indole-3-glycerol-phosphate lyase 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 Indole-3-glycerol-phosphate lyase 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 Indole-3-glycerol-phosphate lyase

In research: Indole-3-glycerol-phosphate lyase 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 Indole-3-glycerol-phosphate lyase 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: Indole-3-glycerol-phosphate lyase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 4.1.2, EC 4.1 stubs, Enzymes of unknown structure, so understanding it makes those chapters shorter.
In everyday life: Look for Indole-3-glycerol-phosphate lyase 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 Indole-3-glycerol-phosphate lyase in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Indole-3-glycerol-phosphate lyase 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 Indole-3-glycerol-phosphate lyase out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Indole-3-glycerol-phosphate lyase in simple terms?

The enzyme indole-3-glycerol-phosphate lyase (EC 4.1.2.8) catalyzes the chemical reaction (1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate ⇌ {\displaystyle \rightleftharpoons } indole + D-glyceraldehyde 3-phosphate This enzyme belongs to the family of lyases, specifically the aldehyde-lyases, which cle…

Why does Indole-3-glycerol-phosphate lyase 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 Indole-3-glycerol-phosphate lyase?

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 Indole-3-glycerol-phosphate lyase.