Results 81 to 90 of about 15,565,904 (256)

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Analysis of tip stability in adhesion process in AFM using potential energy surface: Stability versus dissipation

, 2018
We analyze the stability of the atomic configurations of tips in the adhesion process in noncontact atomic force microscopy (AFM) using a potential energy surface (PES).
Yasuhiro Senda, Nieminen, Risto, Blomqvist, Janne, Senda, Yasuhiro, Risto Nieminen, Janne Blomqvist   +5 more
core   +1 more source

A Study of Contact Electrification Process on PVDF–Metal Interface: Effect of β Phase Composition

Advanced Materials Interfaces
Recently, triboelectric nanogenerators (TENGs) are getting considerable attention as an energy harvesting tool that can convert random mechanical energy into electricity due to the wide material selection, low cost, and easy fabrication.
Yerkezhan Amangeldinova, Jin‐Woo Oh, Wonho Lee, Dong‐Myeong Shin, Yoon‐Hwea Hwang   +4 more
doaj   +1 more source

Influence of the electrostatic charge of lipoprotein particles on the activity of the human plasma phospholipid transfer protein

Journal of Lipid Research, 1998
The aim of the present study was to determine the effect of the electrostatic charge of lipoproteins on the phospholipid transfer activity of the plasma phospholipid transfer protein (PLTP).
Catherine Desrumaux, Anne Athias, David Masson, Philippe Gambert, Christian Lallemant, Laurent Lagrost   +5 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Potential-Dependent Temporal Dynamics of CO Surface Concentration in Electrocatalytic CO₂ Reduction

Beyond the identity and structure of an intermediate, changes in its concentration on and near the electrode surface with time are a critical component to understand and improve selectivity and reactivity in electrochemical transformations.
Padmanabh B. Joshi (11927598), Andrew J. Wilson (141617)   +1 more
core   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

Modified Shepard interpolation of gas-surface potential energy surfaces with strict plane group symmetry and translational periodicity

, 2012
A new formulation of modified Shepard interpolation of potential energy surface data for gas-surface reactions has been developed. The approach has been formulated for monoatomic or polyatomic adsorbates interacting with crystalline solid surfaces of any
Collins, Michael A., MichaelACollins, Frankcombe, Terry J., TerryJFrankcombe, Zhang, Dong H.   +4 more
core   +1 more source

Fine-Tuning Positive-Surface-Charge Carbon Dots for High-Efficiency and Low-Cytotoxicity Gene Delivery

Nanomaterials
Carbon dots (CDs) have emerged as a promising non-viral gene delivery vector due to their excellent biocompatibility and tunable surface properties. In this study, four CDs with gradient-positive zeta potentials (7.23 mV, 16.7 mV, 25.3 mV, 34.5 mV) were ...
Shuo Zhang, Yangming Zhou, Qi Zhang, Juanjuan Xue, Ruijie Li, Tao Liu, Qianqian Duan, Shengbo Sang   +7 more
doaj   +1 more source