Spectroscopic Study of the Role of Metal Ions in the Adsorption Process of Phosphate in Nanoscaled Adsorbers Based on Metal (Zn/Fe/Zr) Oxyhydroxides

2017 ◽  
Vol 121 (45) ◽  
pp. 25033-25042
Author(s):  
W. Szczerba ◽  
M. Schneider ◽  
J. Żukrowski ◽  
A. Guilherme Buzanich ◽  
H. Riesemeier ◽  
...  
Keyword(s):  
Metal Ions ◽  
Spectroscopic Study ◽  
Adsorption Process

The role of metal ions in DNA damage

AccessScience ◽  
2015 ◽  
Keyword(s):  
Dna Damage ◽  
Metal Ions

Adaptive Role of Lipids in Algae under Metal Ions Impact (a Review)

2018 ◽  
Vol 54 (6) ◽  
pp. 78-93
Author(s):  
V. V. Grubinko ◽  
O. I. Bodnar ◽  
A. I. Lutsiv ◽  
G. B. Viniarska
Keyword(s):  
Metal Ions ◽  
Adaptive Role

scholarly journals Adsorption process and mechanism of heavy metal ions by different components of cells, using yeast (Pichia pastoris) and Cu2+ as biosorption models

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17080-17091
Author(s):  
Xinggang Chen ◽  
Zhuang Tian ◽  
Haina Cheng ◽  
Gang Xu ◽  
Hongbo Zhou
Keyword(s):  
Heavy Metal ◽  
Pichia Pastoris ◽  
Metal Ions ◽  
Cell Walls ◽  
Heavy Metal Ions ◽  
Adsorption Process ◽  
Yeast Pichia Pastoris ◽  
Adsorption Sites

The Cu2+ first bound to the outer mannan and finally entered the cytoplasm. During the whole adsorption process, the number of adsorption sites in the outer and middle cell walls was the largest, and then gradually decreased.

scholarly journals The Role of the Disulfide Bridge in the Copper (II) Binding by the Cyclic His4-Peptide

2021 ◽  
Vol 22 (12) ◽  
pp. 6458
Author(s):  
Aleksandra Pieniężna ◽  
Weronika Witak ◽  
Aneta Szymańska ◽  
Justyna Brasuń
Keyword(s):  
Metal Ions ◽  
Coordination Mode ◽  
Transition Metal Ions ◽  
Disulfide Bridge ◽  
Chain Flexibility ◽  
Vis Spectroscopy ◽  
Ph Range ◽  
Cd Studies ◽  
Metal Ratios

In this paper, we present studies on the influence of the disulfide bridge on the copper (II) ions’ binding abilities by the cyclic His4-peptide. The studied ligand HKHPHRHC-S-S-C consists of nine amino acids. The cyclic structure was obtained through a disulfide bridge between two cysteinyl groups. Moreover, this peptide is characterized by the presence of four His residues in the sequence, which makes it an interesting ligand for transition metal ions. The potentiometric and spectroscopic (UV-Vis spectroscopy and circular dichroism spectroscopy (CD)) studies were carried out in various molar ligand to metal ratios: 2:1, 1:1, and 1:2, in the pH range of 2.5–11 at 25 °C. The results showed that the cyclic His4-peptide promotes dinuclear complexes in each of these systems and forms the final dinuclear species with the {NIm, 3N-amide}{NIm, 3N-amide} coordination mode. The obtained data shows that cyclization by the formation of the disulfide bond has an impact on the peptide chain flexibility and appearance of additional potential donors for metal ions and influences the copper (II) ions’ coordination.

MCM-41 grafted with citric acid: The role of carboxylic groups in enhancing the synthesis of xanthenes and removal of heavy metal ions

2021 ◽  
Vol 15 ◽  
pp. 100410
Author(s):  
Mohammed A. Mannaa ◽  
Hatem M. Altass ◽  
Reda S. Salama
Keyword(s):  
Heavy Metal ◽  
Citric Acid ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Carboxylic Groups ◽  
Mcm 41

The role of secondary electrons in electron-assisted adsorption process

1993 ◽  
Vol 290 (1-2) ◽  
pp. L685-L687
Author(s):  
H.T. Liu ◽  
Z. Wu
Keyword(s):  
Adsorption Process ◽  
Secondary Electrons

The role of metal ions in chemical evolution: Polymerization of alanine and glycine in a cation-exchanged clay environment

1979 ◽  
Vol 13 (4) ◽  
pp. 281-286 ◽  
Author(s):  
James G. Lawless ◽  
Nissim Levi
Keyword(s):  
Metal Ions ◽  
Chemical Evolution

The Role of Transition Metal Ions in Ascorbate-Induced Cytotoxicity in Pancreatic Cancer

2014 ◽  
Vol 76 ◽  
pp. S124
Author(s):  
Juan Du ◽  
Brett A Wagner ◽  
Garry R Buettner ◽  
Joseph J Cullen
Keyword(s):  
Pancreatic Cancer ◽  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions
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