biology

JARID2

JARID2 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 JARID2 rather than just read about it. In short: Protein Jumonji is a protein that in humans is encoded by the JARID2 gene. JARID2 is a member of the alpha-ketoglutarate-dependent hydroxylase superfamily.

Key takeaways

JARID2 belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect JARID2 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of JARID2 from memory before moving on to harder problems.

Reference excerpt

Protein Jumonji is a protein that in humans is encoded by the JARID2 gene. JARID2 is a member of the alpha-ketoglutarate-dependent hydroxylase superfamily. It is a homologue of the mouse protein jumonji (jmj), which was named jūmonji for the Japanese word for cruciform, describing the shape of the abnormal neural grooves of jmj mutant mice. Jarid2 (jumonji, AT rich interactive domain 2) is a protein coding gene that functions as a putative transcription factor. Distinguished as a nuclear protein necessary for mouse embryogenesis, Jarid2 is a member of the jumonji family that contains a DNA binding domain known as the AT-rich interaction domain (ARID). In vitro studies of Jarid2 reveal that ARID along with other functional domains are involved in DNA binding, nuclear localization, transcriptional repression, and recruitment of Polycomb-repressive complex 2 (PRC2). Intracellular mechanisms underlying these interactions remain largely unknown. In search of developmentally important genes, Jarid2 has previously been identified by gene trap technology as an important factor necessary for organ development. During mouse organogenesis, Jarid2 is involved in the formation of the neural tube and development of the liver, spleen, thymus and cardiovascular system. Continuous Jarid2 expression in the tissues of the heart, highlight its presiding role in the development of both the embryonic and the adult heart. Mutant models of Jarid2 embryos show severe heart malformations, ventricular septal defects, noncompaction of the ventricular wall, and atrial enlargement. Homozygous mutants of Jarid2 are found to die soon after birth. Overexpression of the mouse Jarid2 gene has been reported to repress cardiomyocyte proliferation through it close interaction with retinoblastoma protein (Rb), a master cell cycle regulator. Retinoblastoma-binding protein-2 and the human SMCX protein share regions of homology between mice and humans.

References

Illustrations

Worked examples

Example 1 — a first encounter with JARID2

Start with the simplest possible case. Write down what JARID2 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 JARID2 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 JARID2 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 JARID2

In research: JARID2 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 JARID2 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: JARID2 is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 1.14.11, Genes mutated in mice, Genes on human chromosome 6, so understanding it makes those chapters shorter.
In everyday life: Look for JARID2 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 JARID2 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what JARID2 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 JARID2 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is JARID2 in simple terms?

Protein Jumonji is a protein that in humans is encoded by the JARID2 gene. JARID2 is a member of the alpha-ketoglutarate-dependent hydroxylase superfamily.

Why does JARID2 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 JARID2?

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 JARID2.