engineering

Ribosylpyrimidine nucleosidase

Ribosylpyrimidine nucleosidase 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 Ribosylpyrimidine nucleosidase rather than just read about it. In short: In enzymology, a ribosylpyrimidine nucleosidase (EC 3.2.2.8) is an enzyme that catalyzes the chemical reaction a pyrimidine nucleoside + H2O ⇌ {\displaystyle \rightleftharpoons } D-ribose + a pyrimidine base Thus, the two substrates of this enzyme are pyrimidine nucleoside and H2O, whereas its two products are D-ribose and pyrimidine base. This enzyme belongs to the family of hydrolases, specifically those glycosyla…

Key takeaways

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

Reference excerpt

In enzymology, a ribosylpyrimidine nucleosidase (EC 3.2.2.8) is an enzyme that catalyzes the chemical reaction

a pyrimidine nucleoside + H2O ⇌ {\displaystyle \rightleftharpoons } D-ribose + a pyrimidine base Thus, the two substrates of this enzyme are pyrimidine nucleoside and H2O, whereas its two products are D-ribose and pyrimidine base. This enzyme belongs to the family of hydrolases, specifically those glycosylases that hydrolyse N-glycosyl compounds. The systematic name of this enzyme class is pyrimidine-nucleoside ribohydrolase. Other names in common use include N-ribosylpyrimidine nucleosidase, pyrimidine nucleosidase, N-ribosylpyrimidine ribohydrolase, pyrimidine nucleoside hydrolase, RihB, YeiK, and nucleoside ribohydrolase. This enzyme participates in purine metabolism and pyrimidine metabolism.

Structural studies As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes PDB: 1Q8F and PDB: 1YOE.

References

Terada M, Tatibana M, Hayaishi O (1967). "Purification and properties of nucleoside hydrolase from Pseudomonas fluorescens". J. Biol. Chem. 242 (23): 5578–85. doi:10.1016/S0021-9258(18)99396-8. PMID 12325375. Petersen C, Moller LB (2001). "The RihA, RihB, and RihC ribonucleoside hydrolases of Escherichia coli. Substrate specificity, gene expression, and regulation". J. Biol. Chem. 276 (2): 884–94. doi:10.1074/jbc.M008300200. PMID 11027694. Giabbai B, Degano M (2004). "Cloning, purification, crystallization and X-ray analysis of the Escherichia coli pyrimidine nucleoside hydrolase YeiK". Acta Crystallogr. D. 60 (Pt 3): 524–7. doi:10.1107/S0907444903028488. PMID 14993681. Giabbai B, Degano M (2004). "Crystal structure to 1.7 a of the Escherichia coli pyrimidine nucleoside hydrolase YeiK, a novel candidate for cancer gene therapy". Structure. 12 (5): 739–49. doi:10.1016/j.str.2004.03.018. PMID 15130467.

Worked examples

Example 1 — a first encounter with Ribosylpyrimidine nucleosidase

Start with the simplest possible case. Write down what Ribosylpyrimidine nucleosidase 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 Ribosylpyrimidine nucleosidase 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 Ribosylpyrimidine nucleosidase 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 Ribosylpyrimidine nucleosidase

In research: Ribosylpyrimidine nucleosidase 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 Ribosylpyrimidine nucleosidase 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: Ribosylpyrimidine nucleosidase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 3.2.2, EC 3.2 stubs, Enzymes of known structure, so understanding it makes those chapters shorter.
In everyday life: Look for Ribosylpyrimidine nucleosidase 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.

Affiliate

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

How to study Ribosylpyrimidine nucleosidase in 20 minutes

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

Frequently asked questions

What is Ribosylpyrimidine nucleosidase in simple terms?

In enzymology, a ribosylpyrimidine nucleosidase (EC 3.2.2.8) is an enzyme that catalyzes the chemical reaction a pyrimidine nucleoside + H2O ⇌ {\displaystyle \rightleftharpoons } D-ribose + a pyrimidine base Thus, the two substrates of this enzyme are pyrimidine nucleoside and H2O, whereas its two…

Why does Ribosylpyrimidine nucleosidase 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 Ribosylpyrimidine nucleosidase?

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 Ribosylpyrimidine nucleosidase.