scholarly journals Zinc and cadmium complexation of L-methionine: An infrared multiple photon dissociation spectroscopy and theoretical study

2020 ◽  
pp. e4580 ◽  
Author(s):  
Georgia C. Boles ◽  
Brandon C. Stevenson ◽  
Randy L. Hightower ◽  
Giel Berden ◽  
Jos Oomens ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Infrared Multiple Photon Dissociation ◽  
Cadmium Complexation

Zinc and Cadmium Complexation of l-Threonine: An Infrared Multiple Photon Dissociation Spectroscopy and Theoretical Study

2019 ◽  
Vol 123 (44) ◽  
pp. 9343-9354 ◽  
Author(s):  
Georgia C. Boles ◽  
Randy L. Hightower ◽  
Giel Berden ◽  
Jos Oomens ◽  
P. B. Armentrout
Keyword(s):  
Theoretical Study ◽  
Infrared Multiple Photon Dissociation ◽  
Cadmium Complexation

scholarly journals Structural Diversity of Di-Metalized Arginine Evidenced by Infrared Multiple Photon Dissociation (IRMPD) Spectroscopy in the Gas Phase

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6546
Author(s):  
Ruxia Feng ◽  
Yicheng Xu ◽  
Xianglei Kong
Keyword(s):  
Gas Phase ◽  
Theoretical Study ◽  
Molecular Level ◽  
Structural Diversity ◽  
Laser Desorption ◽  
Biological Molecules ◽  
Laser Desorption Ionization ◽  
Irmpd Spectroscopy ◽  
Infrared Multiple Photon Dissociation ◽  
Isomerization Energy

Although metal cations are prevalent in biological media, the species of multi-metal cationized biomolecules have received little attention so far. Studying these complexes in isolated state is important, since it provides intrinsic information about the interaction among them on the molecular level. Our investigation here demonstrates the unexpected structural diversity of such species generated by a matrix-assisted laser desorption ionization (MALDI) source in the gas phase. The photodissociation spectroscopic and theoretical study reflects that the co-existing isomers of [Arg+Rb+K−H]+ can have energies ≥95 kJ/mol higher than that of the most stable one. While the result can be rationalized by the great isomerization energy barrier due to the coordination, it strongly reminds us to pay more attention to their structural diversities for multi-metalized fundamental biological molecules, especially for the ones with the ubiquitous alkali metal ions.

Adsorption of H2O and H2S on the (100) surface of silicon. A theoretical study

1987 ◽  
Vol 84 ◽  
pp. 799-803 ◽  
Author(s):  
Vincenzo Barone ◽  
Francesco Lelj ◽  
Nino Russo ◽  
Marirosa Toscano
Keyword(s):  
Theoretical Study
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