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RAD54B

RAD54B 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 RAD54B rather than just read about it. In short: DNA repair and recombination protein RAD54B is a protein that in humans is encoded by the RAD54B gene. The protein encoded by this gene belongs to the DEAD-like helicase superfamily.

RAD54B — main illustration
RAD54B — illustration

Key takeaways

  • RAD54B belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect RAD54B to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of RAD54B from memory before moving on to harder problems.

Reference excerpt

DNA repair and recombination protein RAD54B is a protein that in humans is encoded by the RAD54B gene. The protein encoded by this gene belongs to the DEAD-like helicase superfamily. It shares similarity with Saccharomyces cerevisiae RAD54 and RDH54, both of which are involved in homologous recombination and repair of DNA. This protein binds to double-stranded DNA, and displays ATPase activity in the presence of DNA. This gene is highly expressed in testis and spleen, which suggests active roles in meiotic and mitotic recombination. Homozygous mutations of this gene were observed in primary lymphoma and colon cancer.

Interactions RAD54B has been shown to interact with RAD51.

Cancer The RAD54B gene is somatically mutated or deleted in numerous types of cancer including colorectal cancer (~3.3%), breast cancer (~3.4%), and lung cancer (~2.6%). In North America, these three cancers alone account for about 20,500 individuals diagnosed annually with RAD54B defective cancer. In a pre-clinical study, colon cancer cells defective in RAD54B were determined to be selectively killed by inhibitors of the DNA repair protein PARP1. Inhibitors of PARP1 likely impede alternative DNA repair responses that might otherwise compensate for loss of the RAD54B pathway in cancer cells. Thus RAD54B-deficient cancer cells treated with a PARP1 inhibitor are apparently more vulnerable to killing by naturally occurring DNA damages than non-cancerous cells without a RAD54 defect (see article Synthetic lethality).

References

Further reading

Illustrations

RAD54B illustration
RAD54B illustration
RAD54B illustration
RAD54B illustration
RAD54B illustration

Worked examples

Example 1 — a first encounter with RAD54B

Start with the simplest possible case. Write down what RAD54B 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 RAD54B 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 RAD54B 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 RAD54B

In research
RAD54B 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 RAD54B 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
RAD54B is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 8, Human chromosome 8 gene stubs, so understanding it makes those chapters shorter.
In everyday life
Look for RAD54B 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 RAD54B in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what RAD54B 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 RAD54B out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is RAD54B in simple terms?

DNA repair and recombination protein RAD54B is a protein that in humans is encoded by the RAD54B gene. The protein encoded by this gene belongs to the DEAD-like helicase superfamily.

Why does RAD54B 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 RAD54B?

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 RAD54B.

Tags

  • Genes on human chromosome 8
  • Human chromosome 8 gene stubs

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