Electron spin polarization transfer induced by triplet-radical interactions in the weakly coupled regime

Autor: Marilena Di Valentin, Maria Giulia Dal Farra, Caterina Martin, Elisabetta Bergantino, Art van der Est, Yuri E. Kandrashkin

Publikováno v: Physical chemistry chemical physics : PCCP. 22(35)

We report the observation of electron spin polarization transfer from the triplet state of a porphyrin to a weakly coupled nitroxide radical in a mutant of human neuroglobin (NGB). The native iron-containing heme substrate of NGB has been substituted

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::941c660ef72fbe0f3f1eeaf1387e9507
https://pubmed.ncbi.nlm.nih.gov/32869045

Distance measurements in peridinin-chlorophyll a -protein by light-induced PELDOR spectroscopy. Analysis of triplet state localization

Autor: Marilena Di Valentin, Maria Giulia Dal Farra, Donatella Carbonera, Laura Galazzo, Eckhard Hofmann, Tim Schulte, Marco Albertini

Publikováno v: Biochimica et Biophysica Acta (BBA) - Bioenergetics. 1857:1909-1916

Triplet-triplet energy transfer from chlorophylls to carotenoids is the mechanism underlying the photoprotective role played by carotenoids in many light harvesting complexes, during photosynthesis. The peridinin–chlorophyll-a protein (PCP) is a wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c256bebd8756221180aaa3d722df0d4
https://doi.org/10.1016/j.bbabio.2016.09.008

Light-Induced Pulsed EPR Dipolar Spectroscopy on a Paradigmatic Hemeprotein

Autor: Sabine Richert, Charles Larminie, Marilena Di Valentin, Christiane R. Timmel, Maria Giulia Dal Farra, Marina Gobbo, Caterina Martin, Elisabetta Bergantino, Alice M. Bowen

Publikováno v: Dal Farra, M-G, Richert, S, Martin, C, Larminie, C, Gobbo, M, Bergantino, E, Timmel, C R, Bowen, A & Di Valentin, M 2019, ' Light-Induced Pulsed EPR Dipolar Spectroscopy on a Paradigmatic Hemeprotein ', Chemphyschem : a European journal of chemical physics and physical chemistry, vol. 20, no. 7 . https://doi.org/10.1002/cphc.201900139
Chemphyschem

Light-induced pulsed EPR dipolar spectroscopic methods allow the determination of nanometer distances between two paramagnetic sites. Here we employ orthogonal spin labels, one of which is a chromophore triplet state and the other a stable radical to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6c897c4f4e05c20eba992b59518155a
http://hdl.handle.net/11577/3309876

Light-Induced Porphyrin-Based Spectroscopic Ruler for Nanometer Distance Measurements

Autor: Marilena Di Valentin, Maria Giulia Dal Farra, Laura Orian, Donatella Carbonera, Marina Gobbo, Antonino Polimeno, Enrico Zurlo, Marco Albertini

Publikováno v: Chemistry (Weinheim an der Bergstrasse, Germany). 22(48)

We present a novel pulsed electron paramagnetic resonance (EPR) spectroscopic ruler to test the performance of a recently developed spin-labeling method based on the photoexcited triplet state (S=1). Four-pulse electron double resonance (PELDOR) expe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39e87d58f0cce541ed43403604044b40
https://pubmed.ncbi.nlm.nih.gov/27868323