Protein Folding and Metal Ions

2016 ◽  
Keyword(s):  
Protein Folding ◽  
Metal Ions

Heavy metal ions are potent inhibitors of protein folding

2008 ◽  
Vol 372 (2) ◽  
pp. 341-345 ◽  
Author(s):  
Sandeep K. Sharma ◽  
Pierre Goloubinoff ◽  
Philipp Christen
Keyword(s):  
Heavy Metal ◽  
Protein Folding ◽  
Metal Ions ◽  
Heavy Metal Ions

Probing Protein Folding with Substitution-Inert Metal Ions. Folding Kinetics of Cobalt(III)-Cytochromec

1999 ◽  
Vol 121 (50) ◽  
pp. 11918-11919 ◽  
Author(s):  
F. Akif Tezcan ◽  
Jay R. Winkler ◽  
Harry B. Gray
Keyword(s):  
Protein Folding ◽  
Metal Ions ◽  
Folding Kinetics ◽  
Kinetics Of

Metal ions induced secondary structure rearrangements: mechanically interlocked lassovs.unthreaded branched-cyclic topoisomers

The Analyst ◽  
2018 ◽  
Vol 143 (10) ◽  
pp. 2323-2333 ◽  
Author(s):  
Kevin Jeanne Dit Fouque ◽  
Javier Moreno ◽  
Julian D. Hegemann ◽  
Séverine Zirah ◽  
Sylvie Rebuffat ◽  
...  
Keyword(s):  
Protein Folding ◽  
Secondary Structure ◽  
Metal Ions ◽  
Conformational Change ◽  
Structural Stability ◽  
Significant Role

Metal ions can play a significant role in a variety of important functions in protein systems including cofactor for catalysis, protein folding, assembly, structural stability and conformational change.

Solution Structure of Apo Cu,Zn Superoxide Dismutase:  Role of Metal Ions in Protein Folding†

Biochemistry ◽  
2003 ◽  
Vol 42 (32) ◽  
pp. 9543-9553 ◽  
Author(s):  
Lucia Banci ◽  
Ivano Bertini ◽  
Fiorenza Cramaro ◽  
Rebecca Del Conte ◽  
Maria Silvia Viezzoli
Keyword(s):  
Superoxide Dismutase ◽  
Protein Folding ◽  
Metal Ions ◽  
Solution Structure

Metal Ions, Protein Folding, and Conformational States

2010 ◽  
pp. 3-11
Author(s):  
Cláudio Gomes ◽  
Pernilla Wittung-Stafshede
Keyword(s):  
Protein Folding ◽  
Metal Ions ◽  
Conformational States

HREM Study of electron-induced surface radiation damage in ReO3

1991 ◽  
Vol 49 ◽  
pp. 636-637
Author(s):  
R. Ai ◽  
H.-J. Fan ◽  
L. D. Marks
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Oxides ◽  
Electron Irradiation ◽  
Transition Metal Oxides ◽  
Carbon Film ◽  
Transition Metal Ions ◽  
Surface Radiation ◽  
Valence Transition ◽  
Electron Microscopes

It has been known for a long time that electron irradiation induces damage in maximal valence transition metal oxides such as TiO2, V2O5, and WO3, of which transition metal ions have an empty d-shell. This type of damage is excited by electronic transition and can be explained by the Knoteck-Feibelman mechanism (K-F mechanism). Although the K-F mechanism predicts that no damage should occur in transition metal oxides of which the transition metal ions have a partially filled d-shell, namely submaximal valence transition metal oxides, our recent study on ReO3 shows that submaximal valence transition metal oxides undergo damage during electron irradiation.ReO3 has a nearly cubic structure and contains a single unit in its cell: a = 3.73 Å, and α = 89°34'. TEM specimens were prepared by depositing dry powders onto a holey carbon film supported on a copper grid. Specimens were examined in Hitachi H-9000 and UHV H-9000 electron microscopes both operated at 300 keV accelerating voltage. The electron beam flux was maintained at about 10 A/cm2 during the observation.

ELNES of Iron Compounds

1990 ◽  
Vol 48 (2) ◽  
pp. 28-29
Author(s):  
Hiroki Kurata ◽  
Kazuhiro Nagai ◽  
Seiji Isoda ◽  
Takashi Kobayashi
Keyword(s):  
Energy Loss ◽  
Metal Ions ◽  
Energy Resolution ◽  
Transition Metal Oxides ◽  
Local Symmetry ◽  
Iron Compounds ◽  
Fine Structures ◽  
Electron Energy Loss ◽  
Fe Ions ◽  
Electron Energy Loss Spectra

Electron energy loss spectra of transition metal oxides, which show various fine structures in inner shell edges, have been extensively studied. These structures and their positions are related to the oxidation state of metal ions. In this sence an influence of anions coordinated with the metal ions is very interesting. In the present work, we have investigated the energy loss near-edge structures (ELNES) of some iron compounds, i.e. oxides, chlorides, fluorides and potassium cyanides. In these compounds, Fe ions (Fe2+ or Fe3+) are octahedrally surrounded by six ligand anions and this means that the local symmetry around each iron is almost isotropic.EELS spectra were obtained using a JEM-2000FX with a Gatan Model-666 PEELS. The energy resolution was about leV which was mainly due to the energy spread of LaB6 -filament. The threshole energies of each edges were measured using a voltage scan module which was calibrated by setting the Ni L3 peak in NiO to an energy value of 853 eV.

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