Lipid

In biology and biochemistry a lipid is a macrobiomolecule that is soluble in nonpolar solvents Non-polar solvents are typically hydrocarbons used to dissolve other naturally occurring hydrocarbon lipid molecules that do not (or do not easily) dissolve in water including fatty acids waxes sterols fat-soluble vitamins (such as vitamins A D E and K) monoglycerides diglycerides

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The in vivo structure of biological membranes and

Author summary The structure and organization of the cell membrane are central to many biological functions and although they have been extensively studied there is still much that we don't understand A wealth of detailed information has been obtained from studies of model lipid membranes However these systems are often highly simplified in composition and always lack the active

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Lipid Facts for Kids

A lipid is a type of organic molecule found in living things It is oily or waxy Fats are made from lipid molecules Sources of lipid can be found in algae seeds meat cheese butter and fish Lipids are long chains of carbon and hydrogen molecules Lipids are classified as simple and complex Examples of complex molecules could be steroids or phospholipids

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RCSB PDB

The structure shows a novel lipid II-binding motif in which the pyrophosphate moiety of lipid II is primarily coordinated by the N-terminal backbone amides of nisin via intermolecular hydrogen bonds This cage structure provides a rationale for the conservation of the lanthionine rings among several lipid II-binding lantibiotics

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Lipid Bilayer Structure

The joint use of the experimental determinations as in Figs 2b and 2c and simulations as in Fig 2a promises to lead to better quantitative determination of bilayer structure and eventually to the molecular interactions that determine biologically interesting differences in structure of different lipid bilayers

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Lipid

In biology and biochemistry a lipid is a macrobiomolecule that is soluble in nonpolar solvents Non-polar solvents are typically hydrocarbons used to dissolve other naturally occurring hydrocarbon lipid molecules that do not (or do not easily) dissolve in water including fatty acids waxes sterols fat-soluble vitamins (such as vitamins A D E and K) monoglycerides diglycerides

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Lipids: Definition Structure Function Examples

Lipids make up a group of compounds including fats oils steroids and waxes found in living organisms Lipids serve many important biological roles They provide cell membrane structure and resilience insulation energy storage hormones and protective barriers They also play a role in diseases

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Lipids

The structure of a phospholipid While the fatty acid 'tails' are hydrophobic the phosphate 'head' is hydrophilic This means the phosphate group will orientate itself towards water and away from the rest of the molecule and also gives rise to the special properties that allow phospholipids to

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Phospholipid: Definition Structure Function

Phospholipid Definition A phospholipid is a type of lipid molecule that is the main component of the cell membrane Lipids are molecules that include fats waxes and some vitamins among others Each phospholipid is made up of two fatty acids a phosphate group and a glycerol molecule When many phospholipids line up they form a double layer that is characteristic of all cell membranes

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Lipid A

Lipid A is a lipid component of an endotoxin held responsible for the toxicity of gram-negative bacteria It is the innermost of the three regions of the lipopolysaccharide (LPS) also called endotoxin molecule and its hydrophobic nature allows it to anchor the LPS to the outer membrane While its toxic effects can be damaging the sensing of lipid A by the human immune system may also be

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Lipid Structure Flashcards

Lipid asymmetry Within a membrane proportion of components between outer and inner membrane varies Total amount of phospholipids in the inner and outer lipid monolayers of lipid bilayer are equal proportion facing the cytoplasm or extracellular part of cell will vary greatly

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Phospholipid: Definition Structure Function

Phospholipid Definition A phospholipid is a type of lipid molecule that is the main component of the cell membrane Lipids are molecules that include fats waxes and some vitamins among others Each phospholipid is made up of two fatty acids a phosphate group and a glycerol molecule When many phospholipids line up they form a double layer that is characteristic of all cell membranes

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Lipids

Structure of lipids There is a huge variety of different lipids and the chemical structure varies between each of them Because of this it is difficult to outline a general structure of a lipid All lipids do however contain at least one hydrocarbon chain (i e a chain of carbon and hydrogen atoms) with an acidic end

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Structure of the Human Lipid Exporter ABCA1

structure and molecular mechanisms for ABCA1-mediated lipid export and nascent HDL formation remain largely unknown Here we report the structure of the human ABCA1 determined by single-particle cryoelectron microscopy (cryo-EM) with the nominal resolutions of 4 1 A˚ for the overall structure and 3 9 A˚ for the ECD

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Lipids

Structure of fatty acids The reason why fats are solid at room temperature while oils are liquid has to do with the shape of the fatty acids these triglycerides contain Remember that the fatty acids are long chains of carbon molecules that have hydrogen atoms attached The C-H bonds are where energy is stored At one end of the tail fatty acids have a carboxyl group (-COOH) which gives the

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Cholesterol

Cholesterol is a sterol (a combination steroid and alcohol) and a lipid found in the cell membranes of all body tissues and transported in the blood plasma of all animals The name originates from the Greek chole- (bile) and stereos (solid) and the chemical suffix -ol for an alcohol

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Lipid

In biology a lipid is a substance o biological oreegin that is soluble in nonpolar solvents It comprises a group o naiturally occurrin molecules that include fats wauxes sterols fat-soluble vitamins (sic as vitamins A D E an K) monoglycerides diglycerides triglycerides an phospholipids The main biological functions o lipids include storin energy seegnalin an actin as structural

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LMSD: LIPID MAPS structure database

The same lipid structure in one lipid database can appear quite different in another database (2 3) Moreover large and complex lipids are rather difficult to draw manually which leads to proliferation of shorthand and other abbreviations to represent lipid structures

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ANALYSIS OF LIPIDS

5 Analysis of Lipids 5 1 Introduction Lipids are one of the major constituents of foods and are important in our diet for a number of reasons They are a major source of energy and provide essential lipid nutrients Nevertheless over-consumption of certain lipid components can be detrimental to our health e g cholesterol and saturated

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Lipids: Definition Structure Function Examples

Lipids make up a group of compounds including fats oils steroids and waxes found in living organisms Lipids serve many important biological roles They provide cell membrane structure and resilience insulation energy storage hormones and protective barriers They also play a role in diseases

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Physical Chemical Properties of Lipids

Most people think lipid is just another term for fat but lipids are actually an entire class of molecules By definition lipids include any compound created by living organisms that resists reaction with water including fats hormones oils and membranes Lipids serve many important roles including energy storage insulation carrying

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Crystal Structure of a Lipid G Protein–Coupled Receptor

2/17/2012The lyso-phospholipid sphingosine 1-phosphate modulates lymphocyte trafficking endothelial development and integrity heart rate and vascular tone and maturation by activating G protein–coupled sphingosine 1-phosphate receptors Here we present the crystal structure of the sphingosine 1-phosphate receptor 1 fused to T4-lysozyme (S1P1-T4L) in complex with an antagonist sphingolipid

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Structure of lipid bilayers

Structure of lipid bilayers John F Nagle a b * Stephanie Tristram-Nagle b a Department of Physics Carnegie Mellon University Pittsburgh PA 15213 USA b Department of Biological Sciences Carnegie Mellon University Pittsburgh PA 15213 USA Received 10 May 2000 received in revised form 22 August 2000 accepted 22 August 2000 Abstract The quantitative experimental uncertainty in the

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Avanti Polar Lipids

Whether you are a seasoned lipid researcher or new to the field of lipid research Avanti's Lipidomics Division is developing revolutionary tools to provide researchers with new approaches to answer fundamental questions about lipid structure and function and meet the practical demands of the lipid

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