Interaction of influenza virus proteins with planar bilayer lipid membranes. I. Characterization of their adsorption and incorporation into lipid bilayers. 1984

S El Karadaghi, and J A Zakomirdin, and C Shimane, and D J Bucher, and V A Tverdislov, and I G Kharitonenkov

Alterations in the surface potential difference (delta U) of asolectin planar bilayer lipid membranes were measured following the adsorption of isolated matrix protein (M-protein) or neuraminidase of influenza virus. The method used was based upon measurement of the bilayer lipid membrane capacitance current second harmonic. The delta U dependence on the M-protein and neuraminidase concentration indicates different mechanisms of adsorption of these viral proteins by the lipid bilayer. The conductance (G0) dependence of the bilayer lipid membrane with different compositions on the concentration of isolated surface glycoproteins, hemagglutinin and neuraminidase, M-protein or neuraminidase was investigated. The change in G0 for M-protein was observed only after adsorption saturation had been achieved. Neuraminidase alone does not affect the membrane conductivity. The surface charge and lipid composition of the lipid bilayer influences the adsorption and incorporation of influenza virus M-protein and surface glycoproteins. The reversibility of protein incorporation into the bilayers was investigated by a perfusion technique. The results show reversibility of surface glycoprotein incorporation while M-protein binding appears to be irreversible.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008051 Lipid Bilayers Layers of lipid molecules which are two molecules thick. Bilayer systems are frequently studied as models of biological membranes. Bilayers, Lipid,Bilayer, Lipid,Lipid Bilayer
D010539 Permeability Property of membranes and other structures to permit passage of light, heat, gases, liquids, metabolites, and mineral ions. Permeabilities
D010713 Phosphatidylcholines Derivatives of PHOSPHATIDIC ACIDS in which the phosphoric acid is bound in ester linkage to a CHOLINE moiety. Choline Phosphoglycerides,Choline Glycerophospholipids,Phosphatidyl Choline,Phosphatidyl Cholines,Phosphatidylcholine,Choline, Phosphatidyl,Cholines, Phosphatidyl,Glycerophospholipids, Choline,Phosphoglycerides, Choline
D010743 Phospholipids Lipids containing one or more phosphate groups, particularly those derived from either glycerol (phosphoglycerides see GLYCEROPHOSPHOLIPIDS) or sphingosine (SPHINGOLIPIDS). They are polar lipids that are of great importance for the structure and function of cell membranes and are the most abundant of membrane lipids, although not stored in large amounts in the system. Phosphatides,Phospholipid
D006023 Glycoproteins Conjugated protein-carbohydrate compounds including MUCINS; mucoid, and AMYLOID glycoproteins. C-Glycosylated Proteins,Glycosylated Protein,Glycosylated Proteins,N-Glycosylated Proteins,O-Glycosylated Proteins,Glycoprotein,Neoglycoproteins,Protein, Glycosylated,Proteins, C-Glycosylated,Proteins, Glycosylated,Proteins, N-Glycosylated,Proteins, O-Glycosylated
D000327 Adsorption The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily. Adsorptions
D013499 Surface Properties Characteristics or attributes of the outer boundaries of objects, including molecules. Properties, Surface,Property, Surface,Surface Property
D014763 Viral Matrix Proteins Proteins associated with the inner surface of the lipid bilayer of the viral envelope. These proteins have been implicated in control of viral transcription and may possibly serve as the "glue" that binds the nucleocapsid to the appropriate membrane site during viral budding from the host cell. Membrane Proteins, Viral,Viral M Proteins,Viral M Protein,Viral Membrane Proteins
D014764 Viral Proteins Proteins found in any species of virus. Gene Products, Viral,Viral Gene Products,Viral Gene Proteins,Viral Protein,Protein, Viral,Proteins, Viral

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