engineering

Phosphoribosylformylglycinamidine synthase

Phosphoribosylformylglycinamidine 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 Phosphoribosylformylglycinamidine synthase rather than just read about it. In short: In enzymology, a phosphoribosylformylglycinamidine synthase (EC 6.3.5.3) is an enzyme that catalyzes the chemical reaction ATP + N2-formyl-N1-(5-phospho-D-ribosyl)glycinamide + L-glutamine + H2O ⇌ {\displaystyle \rightleftharpoons } ADP + phosphate + 2-(formamido)-N1-(5-phospho-D-ribosyl)acetamidine + L-glutamate The 4 substrates of this enzyme are ATP, N2-formyl-N1-(5-phospho-D-ribosyl)glycinamide, L-glutamine, and…

Key takeaways

Phosphoribosylformylglycinamidine 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 Phosphoribosylformylglycinamidine synthase to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Phosphoribosylformylglycinamidine synthase from memory before moving on to harder problems.

Reference excerpt

In enzymology, a phosphoribosylformylglycinamidine synthase (EC 6.3.5.3) is an enzyme that catalyzes the chemical reaction

ATP + N2-formyl-N1-(5-phospho-D-ribosyl)glycinamide + L-glutamine + H2O ⇌ {\displaystyle \rightleftharpoons } ADP + phosphate + 2-(formamido)-N1-(5-phospho-D-ribosyl)acetamidine + L-glutamate The 4 substrates of this enzyme are ATP, N2-formyl-N1-(5-phospho-D-ribosyl)glycinamide, L-glutamine, and H2O, whereas its 4 products are ADP, phosphate, 2-(formamido)-N1-(5-phospho-D-ribosyl)acetamidine, and L-glutamate. This enzyme belongs to the family of ligases, specifically those forming carbon-nitrogen bonds carbon-nitrogen ligases with glutamine as amido-N-donor. The systematic name of this enzyme class is N2-formyl-N1-(5-phospho-D-ribosyl)glycinamide:L-glutamine amido-ligase (ADP-forming). Other names in common use include phosphoribosylformylglycinamidine synthetase, formylglycinamide ribonucloetide amidotransferase, phosphoribosylformylglycineamidine synthetase, FGAM synthetase, FGAR amidotransferase, 5'-phosphoribosylformylglycinamide:L-glutamine amido-ligase, (ADP-forming), 2-N-formyl-1-N-(5-phospho-D-ribosyl)glycinamide:L-glutamine, and amido-ligase (ADP-forming). It is known as ADE6 in Saccharomyces cerevisiae (budding yeast) genetics.

Structural studies As of late 2007, 8 structures have been solved for this class of enzymes, with PDB accession codes PDB: 1T3T, PDB: 1VK3, PDB: 1VQ3, PDB: 2HRU, PDB: 2HRY, PDB: 2HS0, PDB: 2HS3, and PDB: 2HS4.

Regulation This enzyme participates in purine metabolism. Oncogenic and physiological signals lead to the ERK-dependent PFAS phosphorylation at the T619 site, stimulating de novo purine synthesis flux. In addition, ERK-mediated PFAS phosphorylation is required for cell and tumor growth.

References

Illustrations

Worked examples

Example 1 — a first encounter with Phosphoribosylformylglycinamidine synthase

Start with the simplest possible case. Write down what Phosphoribosylformylglycinamidine 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 Phosphoribosylformylglycinamidine 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 Phosphoribosylformylglycinamidine 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 Phosphoribosylformylglycinamidine synthase

In research: Phosphoribosylformylglycinamidine 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 Phosphoribosylformylglycinamidine 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: Phosphoribosylformylglycinamidine synthase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 6.3.5, Enzymes of known structure, Ligase stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Phosphoribosylformylglycinamidine 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 Phosphoribosylformylglycinamidine synthase in 20 minutes

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Frequently asked questions

What is Phosphoribosylformylglycinamidine synthase in simple terms?

In enzymology, a phosphoribosylformylglycinamidine synthase (EC 6.3.5.3) is an enzyme that catalyzes the chemical reaction ATP + N2-formyl-N1-(5-phospho-D-ribosyl)glycinamide + L-glutamine + H2O ⇌ {\displaystyle \rightleftharpoons } ADP + phosphate + 2-(formamido)-N1-(5-phospho-D-ribosyl)acetamidin…

Why does Phosphoribosylformylglycinamidine 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 Phosphoribosylformylglycinamidine 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 Phosphoribosylformylglycinamidine synthase.