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biology

RBM9

RBM9 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 RBM9 rather than just read about it. In short: RNA binding motif protein 9 (RBM9), also known as Rbfox2, is a protein which in humans is encoded by the RBM9 gene. Function Rbfox2 is one of several human genes similar to the C. elegans gene Fox-1.

RBM9 — main illustration
RBM9 — illustration

Key takeaways

  • RBM9 belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect RBM9 to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of RBM9 from memory before moving on to harder problems.

Reference excerpt

RNA binding motif protein 9 (RBM9), also known as Rbfox2, is a protein which in humans is encoded by the RBM9 gene.

Function Rbfox2 is one of several human genes similar to the C. elegans gene Fox-1. This gene encodes an RNA binding protein that is thought to be a key regulator of alternative splicing in the nervous system and other cell types. Rbfox2 and the related protein Rbfox1 bind to conserved (U)GCAUG RNA motifs in the introns adjacent to many alternatively spliced exons and promotes inclusion or exclusion of the alternative exon in mature transcripts. The protein also interacts with the estrogen receptor 1 transcription factor and regulates estrogen receptor 1 transcriptional activity. Multiple transcript variants encoding different isoforms have been found for this gene. Rbfox2, as determined by CLIP-seq, binds near alternatively spliced exons and regulates the inclusion or exclusion of exons during alternative splicing by binding in introns either downstream (inclusion) or upstream (exon skipping) of exons. Its presence is important for stem cell survival and knockdowns of Rbfox2 activate markers for apoptosis.

See also Alternative splicing RNA-binding protein

References

Further reading

External links Overview of all the structural information available in the PDB for UniProt: O43251 (RNA binding protein fox-1 homolog 2) at the PDBe-KB.

Illustrations

RBM9 illustration
RBM9 illustration
RBM9 illustration
RBM9 illustration
RBM9 illustration

Worked examples

Example 1 — a first encounter with RBM9

Start with the simplest possible case. Write down what RBM9 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 RBM9 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 RBM9 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 RBM9

In research
RBM9 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 RBM9 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
RBM9 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 22, Human chromosome 22 gene stubs, so understanding it makes those chapters shorter.
In everyday life
Look for RBM9 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 RBM9 in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what RBM9 means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain RBM9 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is RBM9 in simple terms?

RNA binding motif protein 9 (RBM9), also known as Rbfox2, is a protein which in humans is encoded by the RBM9 gene. Function Rbfox2 is one of several human genes similar to the C. elegans gene Fox-1.

Why does RBM9 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 RBM9?

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 RBM9.

Tags

  • Genes on human chromosome 22
  • Human chromosome 22 gene stubs

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