Lipids
... is found exclusively in animals, in which virtually all cells and body fluids contain some cholesterol. Knowledge of the numbering system of carbon atoms found in cholesterol is important because it is the initial starting point in other metabolic pathways, including vit D, steroid hormones and bi ...
... is found exclusively in animals, in which virtually all cells and body fluids contain some cholesterol. Knowledge of the numbering system of carbon atoms found in cholesterol is important because it is the initial starting point in other metabolic pathways, including vit D, steroid hormones and bi ...
Increased Susceptibility of the Sickle Cell Membrane
... enzyme activity or formation of MDA. Therefore, to assess the effects of ascorbate and desferal on normal membranes, oxidation was performed on pink ghosts. Treatment of pink erythrocyte membranes from normal subjects with 0.5 mmol/L tBHP caused a significant decrease in both basal and calmodulin-st ...
... enzyme activity or formation of MDA. Therefore, to assess the effects of ascorbate and desferal on normal membranes, oxidation was performed on pink ghosts. Treatment of pink erythrocyte membranes from normal subjects with 0.5 mmol/L tBHP caused a significant decrease in both basal and calmodulin-st ...
Structure and properties of the outer membranes of Brucella abortus
... location on the surface of the OM seems possible. An interesting possibility is that they shield the negative charge of the phosphates of the lipid A [26] (Fig. 1C). The dominant fatty acids in both phospholipids and ornithine lipids are C:16 and 19:Ocyclopropane (lactobacillic acid). Although the p ...
... location on the surface of the OM seems possible. An interesting possibility is that they shield the negative charge of the phosphates of the lipid A [26] (Fig. 1C). The dominant fatty acids in both phospholipids and ornithine lipids are C:16 and 19:Ocyclopropane (lactobacillic acid). Although the p ...
CE - University of Pittsburgh
... coconut & palm oil are saturated). • Oils are triacylglycerols containing monoor polyunsaturated fatty acids - liquid at room temp - usually from plant sources (however, fish oils are polyunsaturated). • Phospholipids are triacylglycerols that have a FA replaced with a phosphate linked FA group. • T ...
... coconut & palm oil are saturated). • Oils are triacylglycerols containing monoor polyunsaturated fatty acids - liquid at room temp - usually from plant sources (however, fish oils are polyunsaturated). • Phospholipids are triacylglycerols that have a FA replaced with a phosphate linked FA group. • T ...
fulltext - DiVA Portal
... functionally very important part of every cell. The membrane forms not only a barrier that seal out the cell’s external environment and so defines its boundary, but also mediates the selective exchange of information and substances. Furthermore, membranes are the sites where key steps of many vital ...
... functionally very important part of every cell. The membrane forms not only a barrier that seal out the cell’s external environment and so defines its boundary, but also mediates the selective exchange of information and substances. Furthermore, membranes are the sites where key steps of many vital ...
Lipids
... 2- Fatty acids are also structural components of membrane lipids, such as phospholipids and glycolipids. 3- Fatty acids are attached to certain intracellular proteins to enhance the ability of those proteins to enhance ability of those proteins to associate with membranes. 4- Fatty acids are precurs ...
... 2- Fatty acids are also structural components of membrane lipids, such as phospholipids and glycolipids. 3- Fatty acids are attached to certain intracellular proteins to enhance the ability of those proteins to enhance ability of those proteins to associate with membranes. 4- Fatty acids are precurs ...
solvent selection for whole cell biotransformations in organic media
... by intact cells of substrates that are poorly soluble in water. Waterimmiscible solvents are normally less cytotoxic than are watermiscible ones. Whilst a unitary mechanism is excluded, damage to the membrane remains the likeliest major mechanism of cytotoxicity, and may be conveniently assesse ...
... by intact cells of substrates that are poorly soluble in water. Waterimmiscible solvents are normally less cytotoxic than are watermiscible ones. Whilst a unitary mechanism is excluded, damage to the membrane remains the likeliest major mechanism of cytotoxicity, and may be conveniently assesse ...
assembly of integral membrane proteins from the periplasm into the
... and Henning, 1996). E. coli cells lacking the skp gene display reduced levels of OmpA, OmpC, OmpF, and LamB in the OM (Chen and Henning, 1996; Missiakas et al., 1996), a phenotype which resembles that of surA mutants (Missiakas et al., 1996; Rouvière and Gross, 1996). Furthermore, Skp was found to i ...
... and Henning, 1996). E. coli cells lacking the skp gene display reduced levels of OmpA, OmpC, OmpF, and LamB in the OM (Chen and Henning, 1996; Missiakas et al., 1996), a phenotype which resembles that of surA mutants (Missiakas et al., 1996; Rouvière and Gross, 1996). Furthermore, Skp was found to i ...
University of Groningen The Plasma Membrane of
... easily in bilayers. Lipids which have smaller head groups than acyl chains, such as PE, CL, and sterols, are cone shaped and form inverted micelles in solution. High concentrations of such lipids in the membrane may locally induce a high membrane curvature and membrane-packing defect, which can crea ...
... easily in bilayers. Lipids which have smaller head groups than acyl chains, such as PE, CL, and sterols, are cone shaped and form inverted micelles in solution. High concentrations of such lipids in the membrane may locally induce a high membrane curvature and membrane-packing defect, which can crea ...
File
... Specific Function of Lipoproteins • Each class of lipoproteins has a specific function • This depends on its point of synthesis, lipid composition and apolipoprotein content • At least 9 apolipoproteins are found in lipoproteins of human plasma • The apolipoprotein has 2 roles: 1.Solubilise hydroph ...
... Specific Function of Lipoproteins • Each class of lipoproteins has a specific function • This depends on its point of synthesis, lipid composition and apolipoprotein content • At least 9 apolipoproteins are found in lipoproteins of human plasma • The apolipoprotein has 2 roles: 1.Solubilise hydroph ...
isolation and characterization of the membrane
... The membrane envelope enclosing the bacteroids in soybean root nodules is shown by ultrastructural and biochemical studies to be derived from, and to retain the characteristics of, the host cell plasma membrane. During the early stages of the infection process, which occurs through an invagination, ...
... The membrane envelope enclosing the bacteroids in soybean root nodules is shown by ultrastructural and biochemical studies to be derived from, and to retain the characteristics of, the host cell plasma membrane. During the early stages of the infection process, which occurs through an invagination, ...
Plant physiology
... tissues mainly in the form of lipid droplets (Murphy, 2012). Most lipid droplets consist of a core of triglycerides (TAGs) and/or sterol esters coated by a phospholipids monolayer and embedded with proteins (Zweytick et al., 2000). Plants accumulate TAGs in different tissues, primarily in seeds but ...
... tissues mainly in the form of lipid droplets (Murphy, 2012). Most lipid droplets consist of a core of triglycerides (TAGs) and/or sterol esters coated by a phospholipids monolayer and embedded with proteins (Zweytick et al., 2000). Plants accumulate TAGs in different tissues, primarily in seeds but ...
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... Downloaded from http://physrev.physiology.org/ by 10.220.32.246 on July 4, 2017 ...
... Downloaded from http://physrev.physiology.org/ by 10.220.32.246 on July 4, 2017 ...
Chloroplast structure: from chlorophyll granules to supra
... that the crystal structures alone cannot explain many known functional properties of thylakoid membranes. What is needed now is more precise information on how the different complexes are organized in thylakoid membranes and how this organization is altered in response to short-term (seconds to hour ...
... that the crystal structures alone cannot explain many known functional properties of thylakoid membranes. What is needed now is more precise information on how the different complexes are organized in thylakoid membranes and how this organization is altered in response to short-term (seconds to hour ...
File
... • In unsaturated fatty acids, there are two ways the pieces of the hydrocarbon tail can be arranged around a C=C double bond (cis and trans). • In cis bonds, the two pieces of the carbon chain on either side of the double bond are either both “up” or both “down,” such that both are on the same side ...
... • In unsaturated fatty acids, there are two ways the pieces of the hydrocarbon tail can be arranged around a C=C double bond (cis and trans). • In cis bonds, the two pieces of the carbon chain on either side of the double bond are either both “up” or both “down,” such that both are on the same side ...
BIO216 - National Open University of Nigeria
... INTRODUCTION Monosaccharides are the simplest carbohydrates that are also called simple sugars. They are the first of the three classes of carbohydrates characterized by being products of hydrolysis of non simpler sugars (Oligosaccharides and Polysaccharides). Monosaccharides consists of a single po ...
... INTRODUCTION Monosaccharides are the simplest carbohydrates that are also called simple sugars. They are the first of the three classes of carbohydrates characterized by being products of hydrolysis of non simpler sugars (Oligosaccharides and Polysaccharides). Monosaccharides consists of a single po ...
Role of cholesterol in SNARE-mediated trafficking on intracellular
... and intracellular compartments, but is also tightly modulated by cholesterol. Cholesterol-sensitive SNAREs at the cell surface are relatively well characterized, but it is less well understood how altered cholesterol levels in intracellular compartments impact on SNARE localization and function. Rec ...
... and intracellular compartments, but is also tightly modulated by cholesterol. Cholesterol-sensitive SNAREs at the cell surface are relatively well characterized, but it is less well understood how altered cholesterol levels in intracellular compartments impact on SNARE localization and function. Rec ...
Jak napsat abstrakt do sborníku
... fluorescence corresponds to the amount of monomeric form of Hyp, we can conclude that PEG solubilize the aggregates of Hyp in aqueous solution. A similar study was realized for PEG/cholesterol and PEG/phospholipids conjugates. The intensity of Hyp fluorescence increases with the increase of conjugat ...
... fluorescence corresponds to the amount of monomeric form of Hyp, we can conclude that PEG solubilize the aggregates of Hyp in aqueous solution. A similar study was realized for PEG/cholesterol and PEG/phospholipids conjugates. The intensity of Hyp fluorescence increases with the increase of conjugat ...
Lysenin: A sphingomyelin specific pore
... the binding and hemolytic activities of LRP-1 were 10 times less than those of lysenin and LRP-2. Lysenin and LRP-2 share 30 common sites of aromatic amino acids. Among them, only one position, phenylalanine 210, is substituted for isoleucine in LRP-1. The activity of LRP-1 was dramatically increase ...
... the binding and hemolytic activities of LRP-1 were 10 times less than those of lysenin and LRP-2. Lysenin and LRP-2 share 30 common sites of aromatic amino acids. Among them, only one position, phenylalanine 210, is substituted for isoleucine in LRP-1. The activity of LRP-1 was dramatically increase ...
ref. #29 of the TIBS article
... A number of recent biophysical studies have investigated the apparent affinity of aromatic residues for the lipid-water interface or central hydrophobic regions of phospholipid membranes. Data for small model peptides show that the partitioning of Trp into the interface of lipid bilayers is highly f ...
... A number of recent biophysical studies have investigated the apparent affinity of aromatic residues for the lipid-water interface or central hydrophobic regions of phospholipid membranes. Data for small model peptides show that the partitioning of Trp into the interface of lipid bilayers is highly f ...
Biochemical Aspects of Lipid Storage and
... briefly the voluminous literature on mammals and birds. Space is also devoted to the analytical biochemistry of lipids, as new methods in liquid and gas chromatography appear to be on the threshold of automating the quantitative determination of lipid classes and fatty acids. ...
... briefly the voluminous literature on mammals and birds. Space is also devoted to the analytical biochemistry of lipids, as new methods in liquid and gas chromatography appear to be on the threshold of automating the quantitative determination of lipid classes and fatty acids. ...
Physiology of ionophore transport of potassium and sodium
... selective for potassium ions over sodium ions within the cell membrane, acting as a potassium-specific transporter and facilitates the movement of potassium ions through lipid membranes ‘down’ an electrochemical potential gradient. The stability constant K for the {valinomycin-K+} complex is 106 and ...
... selective for potassium ions over sodium ions within the cell membrane, acting as a potassium-specific transporter and facilitates the movement of potassium ions through lipid membranes ‘down’ an electrochemical potential gradient. The stability constant K for the {valinomycin-K+} complex is 106 and ...
Untitled
... Fig.7 T he vicious cycle of epidermal barrier dysfunction and inappropriate immune response in atopic dermatitis [after Sugarrman, 2008] ...
... Fig.7 T he vicious cycle of epidermal barrier dysfunction and inappropriate immune response in atopic dermatitis [after Sugarrman, 2008] ...
PHOSPHATIDYLCHOLINE AND RELATED LIPIDS
... phosphatidylcholine synthesis can lead to inhibition of growth or even cell death. Enhanced synthesis of phosphatidylcholine appears to occur in cancer cells and solid tumours, and this may prove to be a target for therapeutic agents. Whatever the mechanism of biosynthesis in tissues, it is apparent ...
... phosphatidylcholine synthesis can lead to inhibition of growth or even cell death. Enhanced synthesis of phosphatidylcholine appears to occur in cancer cells and solid tumours, and this may prove to be a target for therapeutic agents. Whatever the mechanism of biosynthesis in tissues, it is apparent ...
Phosphatidylcholine traffic to the vacuole
... Despite these advances in our understanding of the existence and significance of non-random lipid distributions within cells, the dynamic processes involved in generating and maintaining this level of organization remain poorly understood. Historically, fractionation studies have proven informative ...
... Despite these advances in our understanding of the existence and significance of non-random lipid distributions within cells, the dynamic processes involved in generating and maintaining this level of organization remain poorly understood. Historically, fractionation studies have proven informative ...
Ethanol-induced non-lamellar phases in phospholipids
The presence of ethanol can lead to the formations of non-lamellar phases also known as non-bilayer phases. Ethanol has been recognized as being an excellent solvent in an aqueous solution for inducing non-lamellar phases in phospholipids. The formation of non-lamellar phases in phospholipids is not completely understood, but it is significant that this amphiphilic molecule is capable of doing so. The formation of non-lamellar phases is significant in biomedical studies which include drug delivery, the transport of polar and non-polar ions using solvents capable of penetrating the biomembrane, increasing the elasticity of the biomembrane when it is being disrupted by unwanted substances (viruses, bacteria, solvents, etc.) and functioning as a channel or transporter of biomaterial.