Lipid interactions with bacterial channels: fluorescence studies
نویسندگان
چکیده
منابع مشابه
Interactions of bacterial polysaccharides with cationic dyes: physicochemical studies.
Capsular polysaccharides (SPS) are an integral component of gram-negative bacteria, and also have potential use as vaccine. In this paper, interactions of SPS isolated from Klebsiella strains K20 and K51 with cationic dyes pinacyanol chloride (PCYN) and acridine orange (AO) were studied by absorbance and fluorescence measurements. Both the polysaccharides having glucuronic acid as the potential...
متن کاملDifferential Lipid Dependence of the Function of Bacterial Sodium Channels
The lipid bilayer is important for maintaining the integrity of cellular compartments and plays a vital role in providing the hydrophobic and charged interactions necessary for membrane protein structure, conformational flexibility and function. To directly assess the lipid dependence of activity for voltage-gated sodium channels, we compared the activity of three bacterial sodium channel homol...
متن کاملFluorescence studies and the nature of ion channels.
spectra from the membranes are very similar to those of aqueous bilayers of the extracted lipids. Protein-lipid interactions are revealed in this system by the sensitivity of membrane-associated enzymic activities to structural transitions detected in the lipid-bilayer component of the membrane. The cytochrome oxidase complexes are a convenient experimental model in which it is possible to vary...
متن کاملMechanosensitivity of ion channels based on protein-lipid interactions.
Ion channels form a group of membrane proteins that pass ions through a pore beyond the energy barrier of the lipid bilayer. The structure of the transmembrane segment of membrane proteins is influenced by the charges and the hydrophobicity of the surrounding lipids and the pressure on its surface. A mechanosensitive channel is specifically designed to change its conformation in response to cha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biochemical Society Transactions
سال: 2005
ISSN: 0300-5127,1470-8752
DOI: 10.1042/bst20050905