biology

TMEFF2

TMEFF2 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 TMEFF2 rather than just read about it. In short: The Transmembrane protein with an EGF-like and two follistatin-like domains 2 (TMEFF2) gene is located on chromosome 2q32-q33 and encodes a 374-residue long single polypeptide, type-I transmembrane proteoglycan. According to the HUGO gene nomenclature committee, the aliases of TMEFF2 include, HPP1, Tomoregulin (TR), Transmembrane protein TENB2 (TENB2), Cancer/testis antigen family 120, member 2 (CT120.2) and Transme…

Key takeaways

TMEFF2 belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect TMEFF2 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of TMEFF2 from memory before moving on to harder problems.

Reference excerpt

The Transmembrane protein with an EGF-like and two follistatin-like domains 2 (TMEFF2) gene is located on chromosome 2q32-q33 and encodes a 374-residue long single polypeptide, type-I transmembrane proteoglycan. According to the HUGO gene nomenclature committee, the aliases of TMEFF2 include, HPP1, Tomoregulin (TR), Transmembrane protein TENB2 (TENB2), Cancer/testis antigen family 120, member 2 (CT120.2) and Transmembrane protein containing EGF and follistatin domains (TPEF). TMEFF2 was identified and characterized by at least five independent groups within the time span of approximately a year. TMEFF2 is proteolytically shed from the cell surface. The reported functions of TMEFF2 span across a wide range of physiological and pathological spectra including metabolism, neuroprotection, apoptosis, embryonic development, onco-suppression and endocrine function. TMEFF2 promoter and its 5′-upstream CpG island are methylated in a number of cancers. An inverse correlation between TMEFF2 methylation and the stage, response to therapy and survival outcome has been observed. The detection of methylated free-circulating TMEFF2 DNA has been suggested as a potential diagnostic tool for colorectal cancer. The TMEFF2 downregulation signature equals and sometimes outperforms the Gleason and pathological scores in prostate cancer. TMEFF2 is downregulated in glioma and cotricotropinomas, and it impairs the production of adrenocorticotropic hormone in glioma cells. Through binding the amyloid β protein, its precursor and derivatives, TMEFF2 provides neuroprotection in Alzheimer's disease. TMEFF2 is a multidomain protein with its N-terminus harbouring a signal peptide followed by two follistatin-like domains, an EGF (epidermal growth factor)-like domain, a transmembrane portion and a short intracellular domain. The EGF-like domain of TMEFF2 appears to be functionally ineffective because of the substitution of a crucial arginine residue (Arg39) with histidine, whereas the follistatin-like domains are reported to be crucial for the relevant functions of TMEFF2 .

References

Illustrations

Worked examples

Example 1 — a first encounter with TMEFF2

Start with the simplest possible case. Write down what TMEFF2 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 TMEFF2 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 TMEFF2 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 TMEFF2

In research: TMEFF2 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 TMEFF2 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: TMEFF2 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 2, Human chromosome 2 gene stubs, so understanding it makes those chapters shorter.
In everyday life: Look for TMEFF2 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 TMEFF2 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what TMEFF2 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 TMEFF2 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is TMEFF2 in simple terms?

Why does TMEFF2 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 TMEFF2?

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 TMEFF2.