Electrostatic Activation Enthalpy for Ion Transport Through a Membrane Channel

Selective Transport of Propylene by Silver Ion Complex Through an Immobilized Liquid Membrane

Ion transport through cell membrane channels

We discuss various models of ion transport through cell membrane channels. Recent experimental data shows that sizes of ion channels are compared to those of ions and that only few ions may be simultaneously in any single channel. Theoretical description of ion transport in such channels should therefore take into account interactions between ions and between ions and channel proteins. This is ...

A parallel finite element simulator for ion transport through three-dimensional ion channel systems

A parallel finite element simulator, ichannel, is developed for ion transport through three-dimensional ion channel systems that consist of protein and membrane. The coordinates of heavy atoms of the protein are taken from the Protein Data Bank and the membrane is represented as a slab. The simulator contains two components: a parallel adaptive finite element solver for a set of Poisson-Nernst-...

Optimizing Diffusive Transport Through a Synthetic Membrane Channel

Position x P1 P2 P3 Transport of ions, [ 1 , 2 ] proteins, [ 3 ] antibiotics [ 4 , 5 ] and other macromolecular solutes through channels and pores is ubiquitous in nature. In particular channel-facilitated diffusion relies on optimized binding sites for the transported particles inside the channel. [ 6 ] Well characterized examples include membrane channels such as maltoporins [ 7 , 8 ] or aqua...

Mechanism of ion transport through the anion-selective channel of the Pseudomonas aeruginosa outer membrane

Protein P trimers isolated and purified from Pseudomonas aeruginosa outer membrane were reconstituted in planar lipid bilayer membranes from diphytanoyl phosphatidylcholine. The protein trimers formed highly anion-specific channels with an average single channel conductance of 160 pS in 0.1 M Cl solution. A variety of different nonvalent anions were found to be permeable through the channel, wh...