Planar lipid bilayer experiments with colicin E9
The cytotoxic domain of colicin E9 is a channel-forming endonuclease
... Colicin E9 forms channels in membranes Pore-forming colicins such as K, Ia, E1, N and A have been the focus of more than two decades of research and so the mechanism by which their cytotoxic domains form ...
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The breakdown of bilayer lipid membranes by dendrimers
... or lipid membranes is an important issue in need of study. Lipid-dendron assemblies and lipid dendrimers are successfully used in medicine for the overall uptake of drugs through membranes ...with ...
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Stretching the Definition of a Lipid Bilayer: Elasticity's Role in Protein and Lipid Organization
... with experiments, in brainstorming, and often, even without realizing it, mentoring; among them special thanks goes to: Corinne Ladous, Paul Grayson, Dave Wu 1 , Paul “Off-Color” Wiggins, Stephanie “You’re so much ...
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Controlled delivery of proteins into bilayer lipid membranes on chip
... Conclusions We have demonstrated a method for the controlled delivery of the K + channel KcsA to an artificial lipid bilayer formed in a microfluidic chip. The protein was incorporated into vesicles ...
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Interaction of partially denatured insulin with a DSPC floating lipid bilayer.
... model lipid membranes and biological processes occurring at these ...floating lipid membrane was chosen as a model membrane because a planar geometry is needed for NR and, with this type of membrane ...
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Membrane Composition Determines Pardaxin's Mechanism of Lipid Bilayer Disruption
... peak. Bilayer disruption is not a prerequisite for a barrel-stave mechanism, but peptides forming a barrel-stave pore should have a defined orienta- tion that can be easily observed using an isotopically labeled ...
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Undulation instability in a bilayer lipid membrane due to electric field interaction wtih lipid dipoles
... a planar membrane in an electric field, which contains an explicit coupling between the orientation of the dipolar lipid headgroups and the mem- brane shape, thus coupling the application of the field to ...
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AFM study on the electric-field effects on supported bilayer lipid membranes
... To quantify the results, all peaks above ;3 nm were manually analyzed from one set of experiments consisting of 29 images at decreasing and increasing applied potentials. Forty-five locations were identified in a ...
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Interaction of Quercetin with Supported Bilayer Lipid Membranes on Glassy Carbon Electrode
... redox couple from reaching the surface of the electrode to a great extent. The same s- BLM used in experiments to interact with quercetin and the image was shown in Fig.6 B, C. With increasing of interaction time, ...
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Electroporation and electropermeabilization of lipid bilayer membranes in the course of snakes’ venom intoxication
... of experiments). 3. RESULTS 3.1. Electrical Current Measurements in Planar Bilayer Lipid Membranes (BLMs) Electrical measurements of planar bilayers provide a means of measuring the ...
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Nanoparticle-Lipid Interaction: Job Scattering Plots to Differentiate Vesicle Aggregation from Supported Lipid Bilayer Formation
... with lipid vesicles and search for prominent features pertaining to their scattering ...the experiments on alumina and silica particles is that electrostatics plays an important role in the association, but ...
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Characterization of the ion channels formed by poliovirus in planar lipid membranes.
... FIG. 2. Conductance induced by 160S when the pH of the medium was changed from 7.4 to 5.4. Bilayers were formed at pH 7.4 and virus was added. After data such as those in Fig. 1 were obtained, the pH was shifted to 5.4 ...
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Radio Frequency Tank Circuit for Probing Planar Lipid Bilayers
... monitoring lipid bilayer forma- tion and fluctuations of integrated ...form planar lipid bilayers, yielding a detectable change in the resonant frequency of the ...the bilayer is easily ...
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CiteSeerX — Analysis of simulated nmr order parameters for lipid bilayer structure determination
... Simulations give a much more detailed view than any experiments on lipid bilayers (Tobias et al., 1997; Tieleman et al., 1997). However, given the uncertainties in force fields and the restriction to ...
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Two-state folding of the outer membrane protein X into a lipid bilayer membrane
... As a fourth method to determine the hydrogen incorporation per molecule, we quantified H/D exchanged samples obtained with the pulsed quenched flow setup by Electrospray Ionization Time-of-Flight (ESI-TOF) mass ...
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Lipid Bilayer Membranes
... anionic lipid concentration, increased flipping of phosphatidyl serine to the external half of the bilayer is typically found after the cytoplasmic ATP concentration drops or cells are ...
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The Lipid Bilayer Is a Two-Dimensional Fluid
... Lipid Bilayers Are Impermeable to Solutes and Ions The Hydrophobic interior of the lipid bilayer creates a barrier to the passage of the most hydrophilic molecules, including ions. They are as ...
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Flexibility in the receptor-binding domain of the enzymatic colicin E9 is required for toxicity against Escherichia coli cells
... the colicin and immunity protein complex and then triggers the events of ...of colicin E9 (ColE9) that resulted in the formation of a disulfide bond located near the middle or the top of the R ...
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Mechanics of lipid bilayer junctions affecting the size of a connecting lipid nanotube
... for lipid vesicles interconnected with LNTs, either pulled outward from the vesicle wall [5,15] or inward into the vesicle interior [11,17], the neck elements (the junctions between the lipid tube and the ...
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Probing metal ion binding and conformational properties of the colicin E9 endonuclease by electrospray ionization time-of-flight mass spectrometry
... the E9 DNase seem to persist after binding to its cognate immunity protein Im9, although a general decrease in the extent of the heteroge- neity was observed (Whittaker et ...Im9-bound E9 DNase apparently ...
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