Bennati, Marina

[["dc.bibliographiccitation.firstpage","11144"],["dc.bibliographiccitation.issue","17"],["dc.bibliographiccitation.journal","Physical Chemistry Chemical Physics"],["dc.bibliographiccitation.lastpage","11149"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Enkin, Nikolay"],["dc.contributor.author","Liu, Guoquan"],["dc.contributor.author","Gimenez-Lopez, Maria del Carmen"],["dc.contributor.author","Porfyrakis, Kyriakos"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Bennati, Marina"],["dc.date.accessioned","2018-11-07T10:03:21Z"],["dc.date.available","2018-11-07T10:03:21Z"],["dc.date.issued","2015"],["dc.description.abstract","Overhauser DNP enhancements of toluene were measured at a magnetic field of 0.35 Tesla in a series of chemically functionalized nitroxide radicals. We observe that the enhancements increase systematically with polarizer size and rotational correlation time. Examination of the saturation factor of N-14 nitroxides by pulsed ELDOR spectroscopy led to a quantitative interpretation of the enhancements, for which the saturation factor increases up to almost unity due to enhanced nuclear (N-14) relaxation in the nitroxide radical. The observation has a direct impact on the choice of optimum DNP polarizers in liquids."],["dc.identifier.doi","10.1039/c5cp00935a"],["dc.identifier.isi","000353338800002"],["dc.identifier.pmid","25855020"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38442"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Royal Soc Chemistry"],["dc.relation.issn","1463-9084"],["dc.relation.issn","1463-9076"],["dc.title","A high saturation factor in Overhauser DNP with nitroxide derivatives: the role of N-14 nuclear spin relaxation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4480"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Physical Chemistry Chemical Physics"],["dc.bibliographiccitation.lastpage","4485"],["dc.bibliographiccitation.volume","23"],["dc.contributor.author","Levien, Marcel"],["dc.contributor.author","Reinhard, Maik"],["dc.contributor.author","Hiller, Markus"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Bennati, Marina"],["dc.contributor.author","Orlando, Tomas"],["dc.date.accessioned","2021-04-14T08:28:34Z"],["dc.date.available","2021-04-14T08:28:34Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1039/d0cp05796g"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82649"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1463-9084"],["dc.relation.issn","1463-9076"],["dc.title","Spin density localization and accessibility of organic radicals affect liquid-state DNP efficiency"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","17"],["dc.bibliographiccitation.journal","Journal of Magnetic Resonance"],["dc.bibliographiccitation.lastpage","27"],["dc.bibliographiccitation.volume","303"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Bejenke, Isabel"],["dc.contributor.author","Hecker, Fabian"],["dc.contributor.author","Kehl, Annemarie"],["dc.contributor.author","Kasanmascheff, Müge"],["dc.contributor.author","Gromov, Igor"],["dc.contributor.author","Prisecaru, Ion"],["dc.contributor.author","Höfer, Peter"],["dc.contributor.author","Hiller, Markus"],["dc.contributor.author","Bennati, Marina"],["dc.date.accessioned","2020-12-10T14:25:14Z"],["dc.date.available","2020-12-10T14:25:14Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1016/j.jmr.2019.04.001"],["dc.identifier.issn","1090-7807"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72491"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","1H high field electron-nuclear double resonance spectroscopy at 263 GHz/9.4 T"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3172"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Chemical Science"],["dc.bibliographiccitation.lastpage","3180"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Halbmair, Karin"],["dc.contributor.author","Seikowski, Jan"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Höbartner, Claudia"],["dc.contributor.author","Sezer, Deniz"],["dc.contributor.author","Bennati, Marina"],["dc.date.accessioned","2016-07-05T10:41:32Z"],["dc.date.accessioned","2021-10-27T13:12:28Z"],["dc.date.available","2016-07-05T10:41:32Z"],["dc.date.available","2021-10-27T13:12:28Z"],["dc.date.issued","2016"],["dc.description.abstract","Structural information at atomic resolution of biomolecular assemblies, such as RNA and RNA protein complexes, is fundamental to comprehend biological function. Modern spectroscopic methods offer exceptional opportunities in this direction. Here we present the capability of pulse EPR to report highresolution long-range distances in RNAs by means of a recently developed spin labeled nucleotide, which carries the TEMPO group directly attached to the nucleobase and preserves Watson–Crick base-pairing. In a representative RNA duplex with spin-label separations up to 28 base pairs (z8 nm) we demonstrate that the label allows for a model-free conversion of inter-spin distances into base-pair separation (Dbp) if broadband pulse excitation at Q band frequencies (34 GHz) is applied. The observed distance distribution increases from 0.2 nm for Dbp ¼ 10 to only 0.5 nm for Dbp ¼ 28, consistent with only small deviations from the “ideal” A-form RNA structure. Molecular dynamics (MD) simulations conducted at 20 C show restricted conformational freedom of the label. MD-generated structural deviations from an “ideal” A-RNA geometry help disentangle the contributions of local flexibility of the label and its neighboring nucleobases and global deformations of the RNA double helix to the experimental distance distributions. The study demonstrates that our simple but strategic spin labeling procedure can access detailed structural information on RNAs at atomic resolution over distances that match the size of macromolecular RNA complexes."],["dc.description.sponsorship","DFG Collaborative Research Centre (CRC) [803]; Max Planck Society"],["dc.identifier.doi","10.1039/C5SC04631A"],["dc.identifier.isi","000374859300027"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13415"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91693"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Royal Soc Chemistry"],["dc.relation.issn","2041-6539"],["dc.relation.issn","2041-6520"],["dc.relation.orgunit","Fakultät für Chemie"],["dc.rights","CC BY-NC 3.0"],["dc.rights.access","openAccess"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc/3.0"],["dc.subject","long-range distances; RNA; EPR spectroscopy"],["dc.title","High-resolution measurement of long-range distances in RNA: pulse EPR spectroscopy with TEMPO-labeled nucleotides"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","S1090780721001804"],["dc.bibliographiccitation.firstpage","107091"],["dc.bibliographiccitation.journal","Journal of Magnetic Resonance"],["dc.bibliographiccitation.volume","333"],["dc.contributor.author","Kehl, Annemarie"],["dc.contributor.author","Hiller, Markus"],["dc.contributor.author","Hecker, Fabian"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Bennati, Marina"],["dc.contributor.author","Meyer, Andreas"],["dc.date.accessioned","2021-12-01T09:24:13Z"],["dc.date.available","2021-12-01T09:24:13Z"],["dc.date.issued","2021"],["dc.description.abstract","Pulsed 19F ENDOR spectroscopy provides a selective method for measuring angstrom to nanometer distances in structural biology. Here, the performance of 19F ENDOR at fields of 3.4 T and 9.4 T is compared using model compounds containing one to three 19F atoms. CF3 groups are included in two compounds, for which the possible occurrence of uniaxial rotation might affect the distance distribution. At 9.4 T, pronounced asymmetric features are observed in many of the presented 19F ENDOR spectra. Data analysis by spectral simulations shows that these features arise from the chemical shift anisotropy (CSA) of the 19F nuclei. This asymmetry is also observed at 3.4 T, albeit to a much smaller extent, confirming the physical origin of the effect. The CSA parameters are well consistent with DFT predicted values and can be extracted from simulation of the experimental data in favourable cases, thereby providing additional information about the geometrical and electronic structure of the spin system. The feasibility of resolving the CSA at 9.4 T provides important information for the interpretation of line broadening in ENDOR spectra also at lower fields, which is relevant for developing methods to extract distance distributions from 19F ENDOR spectra."],["dc.identifier.doi","10.1016/j.jmr.2021.107091"],["dc.identifier.pii","S1090780721001804"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94884"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation","SFB 1456: Mathematik des Experiments: Die Herausforderung indirekter Messungen in den Naturwissenschaften"],["dc.relation","SFB 1456 | Cluster A | A01: Geometric and Bayesian statistics to reconstruct protein radical structures from ENDOR spectroscopy"],["dc.relation.issn","1090-7807"],["dc.rights","CC BY-NC-ND 4.0"],["dc.title","Resolution of chemical shift anisotropy in 19F ENDOR spectroscopy at 263 GHz/9.4 T"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3433"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Physical Chemistry Chemical Physics"],["dc.bibliographiccitation.lastpage","3437"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Pornsuwan, Soraya"],["dc.contributor.author","Höbartner, Claudia"],["dc.contributor.author","Wachowius, Falk"],["dc.contributor.author","Sigurdsson, Snorri Th."],["dc.contributor.author","Baranova, Tatiana Y."],["dc.contributor.author","Diederichsen, Ulf"],["dc.contributor.author","Sicoli, Giuseppe"],["dc.contributor.author","Bennati, Marina"],["dc.date.accessioned","2018-11-07T09:30:21Z"],["dc.date.available","2018-11-07T09:30:21Z"],["dc.date.issued","2013"],["dc.description.abstract","Pulsed electron-electron double resonance (PELDOR, also known as DEER) has become a method of choice to measure distances in biomolecules. In this work we show how the performance of the method can be improved at high EPR frequencies (94 GHz) using variable dual frequency irradiation in a dual mode cavity in order to obtain enhanced resolution toward orientation selection. Dipolar evolution traces of a representative RNA duplex and an alpha-helical peptide were analysed in terms of possible bi-radical structures by considering the inherent ambiguity of symmetry-related solutions."],["dc.identifier.doi","10.1039/c3cp44415e"],["dc.identifier.isi","000314846600006"],["dc.identifier.pmid","23381580"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10192"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31286"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Royal Soc Chemistry"],["dc.relation.issn","1463-9076"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Orientation selection in distance measurements between nitroxide spin labels at 94 GHz EPR with variable dual frequency irradiation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","5893"],["dc.bibliographiccitation.issue","22"],["dc.bibliographiccitation.journal","Physical Chemistry, Chemical Physics"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Türke, Maria-Teresa"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Reese, Marcel"],["dc.contributor.author","Höfer, Peter"],["dc.contributor.author","Bennati, Marina"],["dc.date.accessioned","2021-03-05T08:58:34Z"],["dc.date.available","2021-03-05T08:58:34Z"],["dc.date.issued","2010"],["dc.identifier.doi","10.1039/c002814m"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/80184"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-393"],["dc.relation.eissn","1463-9084"],["dc.relation.issn","1463-9076"],["dc.title","Optimization of dynamic nuclear polarization experiments in aqueous solution at 15 MHz/9.7 GHz: a comparative study with DNP at 140 MHz/94 GHz"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","66"],["dc.bibliographiccitation.journal","Journal of Magnetic Resonance"],["dc.bibliographiccitation.lastpage","71"],["dc.bibliographiccitation.volume","227"],["dc.contributor.author","Kaminker, Ilia"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Manukovsky, Nurit"],["dc.contributor.author","Huber, Thomas"],["dc.contributor.author","Yagi, Hiromasa"],["dc.contributor.author","Otting, Gottfried"],["dc.contributor.author","Bennati, Marina"],["dc.contributor.author","Goldfarb, Daniella"],["dc.date.accessioned","2018-11-07T09:28:31Z"],["dc.date.available","2018-11-07T09:28:31Z"],["dc.date.issued","2013"],["dc.description.abstract","Double electron-electron resonance (DEER) at W-band (95 GHz) was applied to measure the distance between a pair of nitroxide and Gd3+ chelate spin labels, about 6 nm apart, in a homodimer of the protein ERp29. While high-field DEER measurements on systems with such mixed labels can be highly attractive in terms of sensitivity and the potential to access long distances, a major difficulty arises from the large frequency spacing (about 700 MHz) between the narrow, intense signal of the Gd3+ central transition and the nitroxide signal. This is particularly problematic when using standard single-mode cavities. Here we show that a novel dual-mode cavity that matches this large frequency separation dramatically increases the sensitivity of DEER measurements, allowing evolution times as long as 12 mu s in a protein. This opens the possibility of accessing distances of 8 nm and longer. In addition, orientation selection can be resolved and analyzed, thus providing additional structural information. In the case of W-band DEER on a Gd3+-nitroxide pair, only two angles and their distributions have to be determined, which is a much simpler problem to solve than the five angles and their distributions associated with two nitroxide spin labels. (C) 2012 Elsevier Inc. All rights reserved."],["dc.identifier.doi","10.1016/j.jmr.2012.11.028"],["dc.identifier.isi","000314794600012"],["dc.identifier.pmid","23314001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30798"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Academic Press Inc Elsevier Science"],["dc.relation.issn","1090-7807"],["dc.title","W-band orientation selective DEER measurements on a Gd3+/nitroxide mixed-labeled protein dimer with a dual mode cavity"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1402"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Angewandte Chemie. International Edition"],["dc.bibliographiccitation.lastpage","1406"],["dc.bibliographiccitation.volume","58"],["dc.contributor.author","Orlando, Tomas"],["dc.contributor.author","Dervişoğlu, Rıza"],["dc.contributor.author","Levien, Marcel"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Prisner, Thomas F."],["dc.contributor.author","Andreas, Loren B."],["dc.contributor.author","Denysenkov, Vasyl P."],["dc.contributor.author","Bennati, Marina"],["dc.date.accessioned","2020-12-10T14:05:35Z"],["dc.date.available","2020-12-10T14:05:35Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1002/anie.201811892"],["dc.identifier.issn","1433-7851"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/69581"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Dynamic Nuclear Polarization of 13 C Nuclei in the Liquid State over a 10 Tesla Field Range"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","31823"],["dc.bibliographiccitation.issue","47"],["dc.bibliographiccitation.journal","Physical Chemistry, Chemical Physics"],["dc.bibliographiccitation.lastpage","31829"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Liu, Guoquan"],["dc.contributor.author","Liou, Shu-Hao"],["dc.contributor.author","Enkin, Nikolay"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Bennati, Marina"],["dc.date.accessioned","2020-12-10T18:11:16Z"],["dc.date.available","2020-12-10T18:11:16Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1039/C7CP06073D"],["dc.identifier.eissn","1463-9084"],["dc.identifier.issn","1463-9076"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73944"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.eissn","1463-9084"],["dc.relation.issn","1463-9076"],["dc.title","Photo-induced radical polarization and liquid-state dynamic nuclear polarization using fullerene nitroxide derivatives"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]