engineering

Phosphoribosylaminoimidazolecarboxamide formyltransferase

Phosphoribosylaminoimidazolecarboxamide formyltransferase 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 Phosphoribosylaminoimidazolecarboxamide formyltransferase rather than just read about it. In short: Phosphoribosylaminoimidazolecarboxamide formyltransferase (EC 2.1.2.3), also known by the shorter name AICAR transformylase, is an enzyme that catalyzes the chemical reaction This tetrahydrofolate–dependent enzyme catalyzes a nucleophilic acyl substitution of the formyl group from the cofactor 10-formyltetrahydrofolate (10-CHO-THF) to AICA ribonucleotide to give 5-formamidoimidazole-4-carboxamide ribotide (FAICAR)…

Key takeaways

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

Reference excerpt

Phosphoribosylaminoimidazolecarboxamide formyltransferase (EC 2.1.2.3), also known by the shorter name AICAR transformylase, is an enzyme that catalyzes the chemical reaction

This tetrahydrofolate–dependent enzyme catalyzes a nucleophilic acyl substitution of the formyl group from the cofactor 10-formyltetrahydrofolate (10-CHO-THF) to AICA ribonucleotide to give 5-formamidoimidazole-4-carboxamide ribotide (FAICAR). This reaction is involved in purine metabolism.

Nomenclature This enzyme belongs to the family of transferases that transfer one-carbon groups, specifically the hydroxymethyl-, formyl- and related transferases. The systematic name of this enzyme class is 10-formyltetrahydrofolate:5-phosphoribosyl-5-amino-4-imidazole-carboxamide N-formyltransferase. Other names in common use include:

Structural studies As of late 2007, 11 structures have been solved for this class of enzymes, with PDB accession codes PDB: 1G8M, PDB: 1M9N, PDB: 1OZ0, PDB: 1P4R, PDB: 1PKX, PDB: 1PL0, PDB: 1THZ, PDB: 2B1G, PDB: 2B1I, PDB: 2IU0, and PDB: 2IU3.

References

Illustrations

Worked examples

Example 1 — a first encounter with Phosphoribosylaminoimidazolecarboxamide formyltransferase

Start with the simplest possible case. Write down what Phosphoribosylaminoimidazolecarboxamide formyltransferase 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 Phosphoribosylaminoimidazolecarboxamide formyltransferase 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 Phosphoribosylaminoimidazolecarboxamide formyltransferase 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 Phosphoribosylaminoimidazolecarboxamide formyltransferase

In research: Phosphoribosylaminoimidazolecarboxamide formyltransferase 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 Phosphoribosylaminoimidazolecarboxamide formyltransferase 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: Phosphoribosylaminoimidazolecarboxamide formyltransferase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 2.1.2, EC 2.1 stubs, Enzymes of known structure, so understanding it makes those chapters shorter.
In everyday life: Look for Phosphoribosylaminoimidazolecarboxamide formyltransferase 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 Phosphoribosylaminoimidazolecarboxamide formyltransferase in 20 minutes

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Frequently asked questions

What is Phosphoribosylaminoimidazolecarboxamide formyltransferase in simple terms?

Phosphoribosylaminoimidazolecarboxamide formyltransferase (EC 2.1.2.3), also known by the shorter name AICAR transformylase, is an enzyme that catalyzes the chemical reaction This tetrahydrofolate–dependent enzyme catalyzes a nucleophilic acyl substitution of the formyl group from the cofactor 10-f…

Why does Phosphoribosylaminoimidazolecarboxamide formyltransferase 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 Phosphoribosylaminoimidazolecarboxamide formyltransferase?

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 Phosphoribosylaminoimidazolecarboxamide formyltransferase.