Higher-order structural characterisation of native proteins and complexes by top-down mass spectrometry

M Zhou, C Lantz, KA Brown, Y Ge, L Paša-Tolić… - Chemical …, 2020 - pubs.rsc.org
In biology, it can be argued that if the genome contains the script for a cell's life cycle, then
the proteome constitutes an ensemble cast of actors that brings these instructions to life …

Direct radiation effects on the structure and stability of collagen and other proteins

M Lalande, L Schwob, V Vizcaino, F Chirot… - …, 2019 - Wiley Online Library
In this review, recent progress in understanding the direct effects of radiation on the structure
and stability of collagen, the most abundant protein in the human body, and other proteins is …

Fractional-electron and transition-potential methods for core-to-valence excitation energies using density functional theory

S Jana, JM Herbert - Journal of Chemical Theory and …, 2023 - ACS Publications
Methods for computing X-ray absorption spectra based on a constrained core hole (possibly
containing a fractional electron) are examined. These methods are based on Slater's …

Electronic Structure of the Complete Series of Gas-Phase Manganese Acetylacetonates by X-ray Absorption Spectroscopy

OS Ablyasova, M Guo, V Zamudio-Bayer… - The Journal of …, 2023 - ACS Publications
Metal centers in transition metal–ligand complexes occur in a variety of oxidation states
causing their redox activity and therefore making them relevant for applications in physics …

Iron L 3-edge energy shifts for the full range of possible 3d occupations within the same oxidation state of iron halides

M Flach, K Hirsch, M Timm, OS Ablyasova… - Physical Chemistry …, 2022 - pubs.rsc.org
Oxidation states are integer in number but dn configurations of transition metal centers vary
continuously in polar bonds. We quantify the shifts of the iron L3 excitation energy, within the …

Site-selective dissociation upon sulfur L-edge X-ray absorption in a gas-phase protonated peptide

L Schwob, S Dorner, K Atak, K Schubert… - The journal of …, 2020 - ACS Publications
Site-selective dissociation induced by core photoexcitation of biomolecules is of key
importance for the understanding of radiation damage processes and dynamics and for its …

Inner-shell X-ray absorption spectra of the cationic series NH y+(y= 0–3)

S Bari, L Inhester, K Schubert, K Mertens… - Physical Chemistry …, 2019 - pubs.rsc.org
Ion yields following X-ray absorption of the cationic series NHy+ (y= 0–3) were measured to
identify the characteristic absorption resonances in the energy range of the atomic nitrogen …

Breaking inversion symmetry by protonation: experimental and theoretical NEXAFS study of the diazynium ion, N 2 H+

RC Couto, W Hua, R Lindblad, L Kjellsson… - Physical Chemistry …, 2021 - pubs.rsc.org
As an example of symmetry breaking in NEXAFS spectra of protonated species we present a
high resolution NEXAFS spectrum of protonated dinitrogen, the diazynium ion N2H+. By ab …

Soft-x-ray spectroscopy of and cations: The influence of hydrogenation on electronic structure and photofragmentation

Y Huo, MKE Cangahuala, M Goulart, V Zamudio-Bayer… - Physical Review A, 2022 - APS
We have studied soft-x-ray absorption in coronene and in singly hydrogenated coronene
cations. Hydrogenation on the one hand closes the singly occupied molecular orbital of the …

Mapping the electronic transitions of protonation sites in peptides using soft X-ray action spectroscopy

J Leroux, A Kotobi, K Hirsch, T Lau… - Physical Chemistry …, 2023 - pubs.rsc.org
Near-edge X-ray absorption mass spectrometry (NEXAMS) around the nitrogen and oxygen
K-edges was employed on gas-phase peptides to probe the electronic transitions related to …