biology

Mir-24 microRNA precursor family

Mir-24 microRNA precursor family is a biology 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 Mir-24 microRNA precursor family rather than just read about it. In short: The miR-24 microRNA precursor is a small non-coding RNA molecule that regulates gene expression. microRNAs are transcribed as ~70 nucleotide precursors and subsequently processed by the Dicer enzyme to give a mature ~22 nucleotide product. In this case the mature sequence comes from the 3' arm of the precursor.

Key takeaways

Mir-24 microRNA precursor family belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Mir-24 microRNA precursor family to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Mir-24 microRNA precursor family from memory before moving on to harder problems.

Reference excerpt

The miR-24 microRNA precursor is a small non-coding RNA molecule that regulates gene expression. microRNAs are transcribed as ~70 nucleotide precursors and subsequently processed by the Dicer enzyme to give a mature ~22 nucleotide product. In this case the mature sequence comes from the 3' arm of the precursor. The mature products are thought to have regulatory roles through complementarity to mRNA. miR-24 is conserved in various species, and is clustered with miR-23 and miR-27, on human chromosome 9 and 19. Recently, miR-24 has been shown to suppress expression of two crucial cell cycle control genes, E2F2 and Myc in hematopoietic differentiation and also to promote keratinocyte differentiation by repressing actin-cytoskeleton regulators PAK4, Tsk5 and ArhGAP19.

Targets of miR-24 Lal et al. suggested that miR-24 suppresses the tumor suppressor p16(INK4a). Lal et al. reported that mi-24 inhibits cell proliferation by targeting E2F2, MYC via binding to "seedless" 3'UTR microRNA recognition elements. Amelio I. et al. suggest that miR-24 regulates keratinocyte differentiation, controlling actin-cytoskeleton dynamics via PAK4, Tsk5 and ArhGAP19 repression. Wang et al. have shown that miR-24 reduces the mRNA and protein levels of human ALK4 by targeting the 3'-untranslated region of mRNA. Mishra et al. suggest that miR-24 targets the DHFR gene. miR-24-1, also known as miR-189, targets SLITRK1.

References

External links

Page for mir-24 microRNA precursor family at Rfam miRBase family MIPF0000041

Illustrations

Worked examples

Example 1 — a first encounter with Mir-24 microRNA precursor family

Start with the simplest possible case. Write down what Mir-24 microRNA precursor family claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Mir-24 microRNA precursor family 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 Mir-24 microRNA precursor family 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 Mir-24 microRNA precursor family

In research: Mir-24 microRNA precursor family appears in biology 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 Mir-24 microRNA precursor family 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: Mir-24 microRNA precursor family is common in secondary-school and first-year university syllabi. It links to neighbouring topics MicroRNA, MicroRNA precursor families, Molecular and cellular biology stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Mir-24 microRNA precursor family 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 Mir-24 microRNA precursor family in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Mir-24 microRNA precursor family 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 Mir-24 microRNA precursor family out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mir-24 microRNA precursor family in simple terms?

Why does Mir-24 microRNA precursor family matter?

Because it connects several biology 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 Mir-24 microRNA precursor family?

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 Mir-24 microRNA precursor family.