A dipole lattice model for lipid membranes and their interactions with peptides is presented. It uses the Langevin dipole method to calculate electrostatic interactions in the heterogeneous membrane environment. A series of test cases are presented, including spherical charges, dipoles, side chain analogs, and helical peptides. The model consistently produces qualitatively correct results.

[Mn(bpy)(CO)3Br] cast in a Nafion membrane is an active heterogeneous electrocatalyst with good selectivity for CO2 reduction to CO in neutral aqueous electrolyte. Addition of multi-walled carbon nanotubes (MWCNT) leads to a ∼10 fold current enhancement and stable CO : H2 yields (1 : 2) at -1.4 V vs. Ag/AgCl at pH 7.

Figure 1: Axial contrast-enhanced computed tomography (A) shows heterogeneous hepatic parenchyma and ascites, as well as widely dilated venous collateral in the left haemithorax. The dilated venous collateral joined the middle and left hepatic veins. Sagittal CT scan (B) shows membranous obstruction of the inferior vena cava. DVC: dilated venous collateral; LHV: left hepatic vein; MHV: middle h...

The heterogeneous integration of lithium niobate photonic waveguide devices onto a silicon nitride platform via transfer-printing approach has been demonstrated for the first time. A fabrication process was developed to make free-standing membrane compatible with back-end integrated circuits. Micro-ring resonators in format were lithographically defined by using laser direct writing and plasma ...

Interactions between membrane proteins and lipids are often crucial for structure and function yet difficult to define because of their dynamic and heterogeneous nature. Here, we use mass spectrometry to demonstrate that membrane protein oligomers ejected from nanodiscs in the gas phase retain large numbers of lipid interactions. The complex mass spectra that result from gas-phase dissociation ...