Results 91 to 100 of about 1,110,843 (197)
Histidine Protonation and the Oxidizing Power of the Oxygen‐Evolving Complex
ChemPhotoChem, Volume 10, Issue 5, May 2026.Protonation of D1‐His337 governs the oxidizing power of the Mn4CaO5 cluster in photosystem II. Its singly protonated form is unstable, resulting in histidine oxidation and disruption of Mn oxidation, whereas the doubly protonated form is stable and upshifts the cluster redox potential, enabling efficient water oxidation.
Keisuke Saito, Hiroshi Ishikita
wiley +1 more source
Probing single biomolecules with atomic force microscopy [PDF]
, 1997 Fritz J, Anselmetti D, Jarchow J, Fernandez-Busquets X. Probing single biomolecules with atomic force microscopy. Journal of structural biology. 1997;119(2):165-171.During the last years, atomic force microscopy (AFM) has developed from a microscopy tool
Fritz, Jürgen +3 more
core +1 more source
Purification and Cryo-Electron Microscopy Analysis of Bacterial Appendages
Bio-ProtocolA number of extracellular helical protein polymers are crucial for supporting bacterial motility. The bacterial flagellum is a polymeric appendage used to support cellular motility.
Juan Sanchez +2 more
doaj +1 more source
Imaging Tissue Engineering Scaffolds Using Multiphoton Microscopy
, 2011 In this study, we combined two-photon autofluorescence and second harmonic generation imaging to investigate the three- dimensional microstructure and nonlinear optical properties of tissue engineering scaffolds.
SUN, YEN;TAN, HSIN-YUAN;LIN, SUNG-JAN;LEE, HSUAN-SHU;LIN, TZU-YU;JEE, SHIOU-HWA;YOUNG, TAI -HORNG;LO, WEN;CHEN, WEI-LIANG;DONG, CHEN-YUAN +1 more
core +1 more source
Method for sample preparation for cryoelectron microscopy (CEM) microreactor and loading platform
, 2008 A method for sample preparation for cryoelectron microscopy (CEM), wherein the sample is held in a microreactor, wherein the conditions in the microreactor are regulated relative to the environment, wherein the sample in the microreactor is frozen ...
Zandbergen, H.W. +3 more
core +2 more sources
Cryoelectron microscopy pioneers win chemistry Nobel [PDF]
Physics Today, 2017 Proteins frozen in vitreous ice are now being imaged with atomic resolution.
openaire +1 more source
Functional Conformations for Pyruvate Carboxylase during Catalysis Explored by Cryoelectron Microscopy [PDF]
, 2014 SummaryThe tetrameric enzyme pyruvate carboxylase (PC), a biotin-dependent carboxylase, produces oxaloacetate by two consecutive reactions that take place in distant active sites.
Lázaro, Melisa +5 more
core +1 more source
Cryo-Electron Microscopy Studies of Biomolecular Structure and Dynamics
MicromachinesThe technical innovation of the last decade has provided novel tools that are now transforming the field of biophysics by bringing remarkable atomic level insights into the mechanisms employed by bio-micromachines to sustain life [...]
Arkadiusz W. Kulczyk
doaj +1 more source
Journal of Lipid Research, 1999 Cryo-electron microscopy was used to analyze the structure of lipoprotein particles in density gradient subfractions of human very low density lipoprotein (VLDL), intermediate density lipoprotein (IDL), and low density lipoprotein (LDL).
Rik van Antwerpen +3 more
doaj +1 more source
Cryo-electron microscopy structure of an archaeal ribonuclease P holoenzyme
Nature Communications, 2019 Ribonulease P is a conserved ribozyme present in all kingdoms of life that is involved in the 5′ maturation step of tRNAs. Here the authors determine the structure of an archaeal RNase P holoenzyme that reveals how archaeal RNase P recognizes its tRNA ...
Futang Wan +8 more
doaj +1 more source