biology

PPM1D

PPM1D 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 PPM1D rather than just read about it. In short: Protein phosphatase 1D is an enzyme that in humans is encoded by the PPM1D gene. Gene The protein encoded by this gene is a member of the PP2C family of Ser/Thr protein phosphatases.

Key takeaways

PPM1D belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect PPM1D to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PPM1D from memory before moving on to harder problems.

Reference excerpt

Protein phosphatase 1D is an enzyme that in humans is encoded by the PPM1D gene.

Gene The protein encoded by this gene is a member of the PP2C family of Ser/Thr protein phosphatases.

Function PP2C family members are known to be negative regulators of cell stress response pathways. The expression of this gene is induced in a p53-dependent manner in response to various environmental stresses. While being induced by tumor suppressor protein TP53/p53, this phosphatase negatively regulates the activity of p38 MAP kinase (MAPK/p38) through which it reduces the phosphorylation of p53, and in turn suppresses p53-mediated transcription and apoptosis. This phosphatase thus mediates a feedback regulation of p38-p53 signaling that contributes to growth inhibition and the suppression of stress induced apoptosis.

Clinical significance This gene is located in a chromosomal region known to be amplified in breast cancer. The amplification of this gene has been detected in both breast cancer cell line and primary breast tumors, which suggests a role of this gene in cancer development. Pathogenic variants in exons 5-6 in the PPM1D gene can cause the neurodevelopmental disorder known as Jansen-de Vries Syndrome (JdVS).

Interactions PPM1D has been shown to interact with CDC5L.

References

Illustrations

Worked examples

Example 1 — a first encounter with PPM1D

Start with the simplest possible case. Write down what PPM1D 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 PPM1D 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 PPM1D 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 PPM1D

In research: PPM1D 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 PPM1D 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: PPM1D is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 17, Human chromosome 17 gene stubs, so understanding it makes those chapters shorter.
In everyday life: Look for PPM1D 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 PPM1D in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PPM1D 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 PPM1D out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PPM1D in simple terms?

Protein phosphatase 1D is an enzyme that in humans is encoded by the PPM1D gene. Gene The protein encoded by this gene is a member of the PP2C family of Ser/Thr protein phosphatases.

Why does PPM1D 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 PPM1D?

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 PPM1D.