Electron Spin-Polarization Dependent Damage to Chiral Amino Acid l-Histidine.

The Journal of Physical Chemistry Letters
M J SchaibleT M Orlando

Abstract

The damage of approximately monolayer films of l-histidine by low-energy spin-polarized electrons (SPE) ejected from a magnetized cobalt substrate has been probed using X-ray photoelectron spectroscopy (XPS). Average damage cross sections for N-containing motifs of l-histidine are 25-30 and 2-5 Mb for zwitterions and neutral molecules, respectively. The magnetization direction of the substrate, which controls the ejected SPE helicity, was reversed in situ, and statistically significant differences in the damage cross sections of 10-30% were measured between positive and negative electron helicities. This is the first measurement of spin dichroism (SD) in an amino acid. The differential cross sections suggest that inelastic scattering of SPE with chiral molecules could contribute to the persistence of one enantiomer vs the other under certain irradiation conditions, particularly for the zwitterionic species.

References

Feb 14, 1997·Science·J R Cronin, S Pizzarello
Sep 7, 2001·Geochimica Et Cosmochimica Acta·S Pizzarello, J R Cronin
Jul 27, 2006·The Journal of Physical Chemistry. B·Yan ZubavichusMichael Grunze
May 27, 2008·The Journal of Chemical Physics·Thomas M OrlandoAlexandr B Aleksandrov
Oct 7, 2008·The Journal of Physical Chemistry. B·Vitaliy FeyerKevin C Prince
Mar 27, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Vitaliy FeyerKevin C Prince
Jun 3, 2010·The Journal of Chemical Physics·J Kopyra, H Abdoul-Carime
May 28, 2011·International Journal of Radiation Biology·Marc MichaudLéon Sanche
Jan 13, 2015·Annual Review of Physical Chemistry·Elahe AlizadehLéon Sanche
Feb 2, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Karen MichaeliDavid H Waldeck
Feb 24, 2017·Proceedings of the National Academy of Sciences of the United States of America·Anup KumarRon Naaman
Jun 4, 2019·The Journal of Chemical Physics·A D McKeeT M Orlando
Oct 18, 2019·Angewandte Chemie·Tzuriel S MetzgerRon Naaman
Feb 6, 2020·The Journal of Physical Chemistry Letters·Supriya GhoshDavid H Waldeck
Feb 12, 2020·The Journal of Physical Chemistry. B·Sramana KunduThomas M Orlando
Jul 23, 2020·Physical Chemistry Chemical Physics : PCCP·B P BloomD H Waldeck

❮ Previous
Next ❯

Citations

Feb 24, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·R A RosenbergV Novosad

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.