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biology

KAT8

KAT8 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 KAT8 rather than just read about it. In short: K(lysine) acetyltransferase 8 (KAT8) is an enzyme that in humans is encoded by the KAT8 gene. Function The MYST family of histone acetyltransferases, which includes KAT8, was named for the founding members MOZ (MYST3; MIM 601408), yeast YBF2 and SAS2, and TIP60 (HTATIP; MIM 601409).

KAT8 — main illustration
KAT8 — illustration

Key takeaways

  • KAT8 belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect KAT8 to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of KAT8 from memory before moving on to harder problems.

Reference excerpt

K(lysine) acetyltransferase 8 (KAT8) is an enzyme that in humans is encoded by the KAT8 gene.

Function The MYST family of histone acetyltransferases, which includes KAT8, was named for the founding members MOZ (MYST3; MIM 601408), yeast YBF2 and SAS2, and TIP60 (HTATIP; MIM 601409). All members of this family contain a MYST region of about 240 amino acids with a canonical acetyl-CoA-binding site and a C2HC-type zinc finger motif. Most MYST proteins also have a chromodomain involved in protein-protein interactions and targeting transcriptional regulators to chromatin. KAT8 is also known as MOF, and in humans hMOF. Given its fundamental role in modulating higher-order chromatin structure, hMOF is involved in many of the steps of the DNA damage response. The human hMOF gene encodes an enzyme that specifically acetylates histone H4 at lysine 16. The depletion of hMOF greatly decreases DNA double-strand break repair by both non-homologous end joining and homologous recombination. Thus MOF activity is critical for double-strand break repair.

Interactions KAT8 has been shown to interact with MORF4L1.

References

Further reading

External links Overview of all the structural information available in the PDB for UniProt: Q9H7Z6 (Human Histone acetyltransferase KAT8) at the PDBe-KB. Overview of all the structural information available in the PDB for UniProt: Q9D1P2 (Mouse Histone acetyltransferase KAT8) at the PDBe-KB.

Illustrations

KAT8 illustration
KAT8 illustration
KAT8 illustration
KAT8 illustration
KAT8 illustration

Worked examples

Example 1 — a first encounter with KAT8

Start with the simplest possible case. Write down what KAT8 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 KAT8 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 KAT8 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 KAT8

In research
KAT8 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 KAT8 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
KAT8 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 16, Human chromosome 16 gene stubs, so understanding it makes those chapters shorter.
In everyday life
Look for KAT8 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 KAT8 in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what KAT8 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 KAT8 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is KAT8 in simple terms?

K(lysine) acetyltransferase 8 (KAT8) is an enzyme that in humans is encoded by the KAT8 gene. Function The MYST family of histone acetyltransferases, which includes KAT8, was named for the founding members MOZ (MYST3; MIM 601408), yeast YBF2 and SAS2, and TIP60 (HTATIP; MIM 601409).

Why does KAT8 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 KAT8?

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 KAT8.

Tags

  • Genes on human chromosome 16
  • Human chromosome 16 gene stubs

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