science

Lysophosphatidylethanolamine

Lysophosphatidylethanolamine is a science 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 Lysophosphatidylethanolamine rather than just read about it. In short: A lysophosphatidylethanolamine (LPE) is a chemical compound derived from a phosphatidylethanolamine, which is typical of cell membranes. LPE results from partial hydrolysis of phosphatidylethanolamine, which removes one of the fatty acid groups.

Key takeaways

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

Reference excerpt

A lysophosphatidylethanolamine (LPE) is a chemical compound derived from a phosphatidylethanolamine, which is typical of cell membranes. LPE results from partial hydrolysis of phosphatidylethanolamine, which removes one of the fatty acid groups. The hydrolysis is generally the result of the enzymatic action of phospholipase A2. LPE can be used in agricultural use to regulate plant growth such as color increase, sugar content increase, plant health increase, and storability increase without side effect. LPE is present as a minor phospholipid in the cell membrane. Actually, LPE was detected in human serum, and its level is reported to be about several hundred ng mL−1. Available sources of LPE are egg yolk lecithin (≤1.5%), soybean lecithin (≤0.2%), and other lecithins.

Function Lysophosphatidylethanolamine (LPE also, lisophos ) is a minor constituent of cell membranes(natural compound). LPE plays a role in cell-mediated cell signaling and activation of other enzymes. The physiological significance of the plasma LPE remains unknown. However, LPE has antifungal and antibacterial activity in the housefly, and in certain mushrooms, it stimulates the MAPK cascade. Previous studies showed that LPE, a natural phospholipid, can accelerate ripening and prolong shelf life of tomato fruit, and retard senescence in attached and detached leaves and fruit of tomato. In other studies, LPE inhibited the activity of phospholipase D (PLD), a membrane degrading enzyme, of which active is increased during senescence. More recently, it is reported that LPE can also accelerate color development and promote shelf life of cranberries, and increase fruit qualities of Thompson seedless grapes, in such as soluble solids content (SSC), titratable acidity (TA), firmness, and size. Along with these results show that LPE can accelerate ripening of fruit and also, have potential to protect senescence.

Structure and chemistry

Lysophosphatidylethanolamine (LPE) is composed of an ethanolamine head group and glycerophosphoric acid with a various fatty acid located sn-1 position. The fatty acid may be saturated or unsaturated acyl.

Chemical name: 1-Acyl-sn-glycero-3-phospho(2-aminoethanol) CAS number: 95046-40-5 Molecular weight: ≅479

Uses Lysophosphatidylethanolamine (LPE) is a minor membrane glycerolipid; however, it has been reported that it has useful physiological effects on fruit and vegetable crops. LPE was approved by the United States Environmental Protection Agency for use on agricultural crops. It is used with tomatoes, peppers, grapes, cranberry, and oranges for increasing color, sugar contents and their storage life. In addition, it is reported that LPE can delay senescence in leaves and fruits, and mitigate stress of ethylene-induced process. SignaFresh, the brand name made of LPE, is helpful for crops to be valuable product. Preharvest application of SignaFresh leads ideal postharvest behaviors.

See also Phospholipid Phospholipase A2 Phospholipase D Phenylalanine ammonia lyase (PAL) Acid invertase (Ac INV)

References

Illustrations

Worked examples

Example 1 — a first encounter with Lysophosphatidylethanolamine

Start with the simplest possible case. Write down what Lysophosphatidylethanolamine claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Lysophosphatidylethanolamine 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 Lysophosphatidylethanolamine 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 Lysophosphatidylethanolamine

In research: Lysophosphatidylethanolamine appears in science 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 Lysophosphatidylethanolamine 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: Lysophosphatidylethanolamine is common in secondary-school and first-year university syllabi. It links to neighbouring topics Phospholipids, so understanding it makes those chapters shorter.
In everyday life: Look for Lysophosphatidylethanolamine 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 Lysophosphatidylethanolamine in 20 minutes

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

Frequently asked questions

What is Lysophosphatidylethanolamine in simple terms?

Why does Lysophosphatidylethanolamine matter?

Because it connects several science 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 Lysophosphatidylethanolamine?

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 Lysophosphatidylethanolamine.