Decoding the fucose migration product during mass‐spectrometric analysis of blood group epitopes

M Lettow, K Greis, E Mucha… - Angewandte Chemie …, 2023 - Wiley Online Library
Fucose is a signaling carbohydrate that is attached at the end of glycan processing. It is
involved in a range of processes, such as the selectin‐dependent leukocyte adhesion or …

Sunlight Induces the Production of Atmospheric Volatile Organic Compounds (VOCs) from Thermokarst Ponds

T Wang, C Kalalian, D Fillion, S Perrier… - Environmental …, 2023 - ACS Publications
Ground subsidence caused by permafrost thawing causes the formation of thermokarst
ponds, where organic compounds from eroding permafrost accumulate. We photolyzed …

Studying the Key Intermediate of RNA Autohydrolysis by Cryogenic Gas‐Phase Infrared Spectroscopy

K Greis, C Kirschbaum, MI Taccone… - Angewandte Chemie …, 2022 - Wiley Online Library
Over the course of the COVID‐19 pandemic, mRNA‐based vaccines have gained
tremendous importance. The development and analysis of modified RNA molecules benefit …

Direct Experimental Characterization of a Sialyl Cation

F Dahlmann, CE Griesbach… - … A European Journal, 2024 - Wiley Online Library
Sialic acids are monosaccharide residues involved in several biological processes.
Controlling the stereoselectivity of sialylation reactions is challenging and mechanistic …

Dearomatization drives complexity generation in freshwater organic matter

S Li, M Harir, D Bastviken, P Schmitt-Kopplin… - Nature, 2024 - nature.com
Dissolved organic matter (DOM) is one of the most complex, dynamic and abundant sources
of organic carbon, but its chemical reactivity remains uncertain,–. Greater insights into DOM …

Photooxidation of Nonanoic Acid by Molecular and Complex Environmental Photosensitizers

G Freeman-Gallant, EJ Davis, E Scholer… - The Journal of …, 2024 - ACS Publications
Photochemical aging and photooxidation of atmospheric particles play a crucial role in both
the chemical and physical processes occurring in the troposphere. In particular, the …

The impact of side-chain fluorination on proton-bound phenylalanine dimers: a cryogenic infrared spectroscopic study

M Safferthal, K Greis, R Chang, CW Chang… - Physical Chemistry …, 2024 - pubs.rsc.org
The incorporation of fluorine into amino acids is an important strategy to produce tailored
building blocks with unique properties for peptide-based materials. Phenylalanine is …

Cryogenic infrared spectroscopy reveals remarkably short NH+⋯ F hydrogen bonds in fluorinated phenylalanines

M Safferthal, K Greis, R Chang… - Physical Chemistry …, 2023 - pubs.rsc.org
In past decades, hydrogen bonds involving organic fluorine have been a highly disputed
topic. Obtaining clear evidence for the presence of fluorine-specific interactions is generally …

Hydrogen Tag Shifts as Vibrational Reporters for Positional Isomers of Formylphenides: Surprising Mobility of the Carbanion Center upon Collisional Decarboxylation …

OC Moss, T Schleif, JP Messinger… - The Journal of …, 2024 - ACS Publications
Infrared photodissociation of weakly bound “mass tags” is widely used to determine the
structures of ions by analyzing their vibrational spectra. Molecular hydrogen is a common …

Entschlüsselung des Fucose‐Migrationsproduktes bei der Massenspektrometrischen Analyse von Blutgruppenepitopen

M Lettow, K Greis, E Mucha, TR Lambeth… - Angewandte …, 2023 - Wiley Online Library
Fucose ist ein signalgebendes Kohlenhydrat, das am Ende der Glykosylierung angehängt
wird. Es ist an einer Reihe von Prozessen beteiligt, z. B. an der Selectin‐abhängigen …