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Impact of solvation on the electronic resonances in uracil

Journal Article · · Physical Chemistry Chemical Physics
DOI:https://doi.org/10.1039/D4CP04333B· OSTI ID:2741565
Interactions of low-energy electrons with the DNA and RNA nucleobases are known to form metastable states, known as electronic resonances. In this work, we study electron attachment to solvated uracil, an RNA nucleobase, using the orbital stabilization method at the Equation of Motion-Coupled Cluster for Electron Affinities with Singles and Doubles (EOM-EA-CCSD) level of theory with the Effective Fragment Potential (EFP) solvation method. We benchmarked the approach using multireference methods, as well as by comparing EFP and full quantum calculations. The impact of solvation on the first one particle (1p) shape resonance, formed by electron attachment to the π* LUMO orbital, as well as the first two particle one hole (2p1h) resonance, formed by electron attachment to neutral uracil's π–π* excited state, was investigated. We used molecular dynamics simulations for solvent configurations and applied charge stabilization technique-based biased sampling to procure configurations adequate to cover the entire range of the electron attachment energy distribution. The electron attachment energy in solution is found to be distributed over a wide range of energies, between 4.6 eV to 6.8 eV for the 2p1h resonance, and between −0.1 eV to 2 eV for the 1p resonance. The solvent effects were similar for the two resonances, indicating that the exact electron density of the state is not as important as the solvent configurations. Multireference calculations extended the findings showing that solvation effects are similar for the lowest four resonances, further indicating that the specific solute electron density is not as important, but rather the water configurations play the most important role in solvation effects. Lastly, by comparing bulk solvation to clusters of uracil with a few water molecules around it, we find that the impact of microsolvation is very different from that of bulk solvation.
Research Organization:
Princeton University, NJ (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019394
OSTI ID:
2741565
Alternate ID(s):
OSTI ID: 2511176
Journal Information:
Physical Chemistry Chemical Physics, Journal Name: Physical Chemistry Chemical Physics Journal Issue: 7 Vol. 27; ISSN 1463-9076; ISSN 1463-9084
Publisher:
Royal Society of Chemistry (RSC)Copyright Statement
Country of Publication:
United States
Language:
English

References (73)

Development and current status of the CHARMM force field for nucleic acids journal January 2000
Models, Interpretations, and Calculations Concerning Resonant Electron Scattering Processes in Atoms and Molecules book January 2007
Resonant Formation of Strand Breaks in Sensitized Oligonucleotides Induced by Low-Energy Electrons (0.5-9 eV) journal July 2017
Scalable molecular dynamics with NAMD journal January 2005
Bound anionic states of DNA and RNA nucleobases: An EOM‐CCSD investigation journal December 2018
The influence of polarization functions on molecular orbital hydrogenation energies journal January 1973
MP2 energy evaluation by direct methods journal December 1988
The CASSCF state interaction method journal February 1989
Chapter 10 The Effective Fragment Potential: A General Method for Predicting Intermolecular Interactions book January 2007
Biological Consequences of Radiation-induced DNA Damage: Relevance to Radiotherapy journal October 2013
Theoretical study on the transformation mechanism between dipole-bound and valence-bound anion states of small uracil–water clusters and their photoelectron spectra journal August 2009
Fate of Dipole-Bound Anion States when Hydrated journal February 2020
Modeling the Ultrafast Electron Attachment Dynamics of Solvated Uracil journal August 2021
Effective Fragment Potentials for Microsolvated Excited and Anionic States journal November 2022
Low-Lying π* Resonances of Standard and Rare DNA and RNA Bases Studied by the Projected CAP/SAC–CI Method journal February 2016
Electronic Resonances of Nucleobases Using Stabilization Methods journal April 2018
Shape Resonances in DNA: Nucleobase Release, Reduction, and Dideoxynucleoside Products Induced by 1.3 to 2.3 eV Electrons journal July 2022
Microhydration Prevents Fragmentation of Uracil and Thymine by Low-Energy Electrons journal August 2016
How Do Low-Energy (0.1−2 eV) Electrons Cause DNA-Strand Breaks? journal October 2006
Fragmentation Methods: A Route to Accurate Calculations on Large Systems journal August 2011
Electron attachment to uracil: theoretical ab initio study journal October 1993
Damage to Model DNA Fragments from Very Low-Energy (<1 eV) Electrons journal May 2004
Low Energy Electron Induced DNA Damage: Effects of Terminal Phosphate and Base Moieties on the Distribution of Damage journal April 2008
Low-Energy Shape Resonances of a Nucleobase in Water journal December 2022
Mechanism for Damage to DNA by Low-Energy Electrons journal August 2002
Microsolvation Effect, Hydrogen-Bonding Pattern, and Electron Affinity of the Uracil−Water Complexes U−(H2O)n(n= 1, 2, 3) journal March 2006
Solvation of the Excited States of Chromophores in Polarizable Environment: Orbital Relaxation versus Polarization journal August 2010
Solvent Effects on the Electronic Transitions of p -Nitroaniline: A QM/EFP Study journal February 2011
Effect of Solvation on the Vertical Ionization Energy of Thymine: From Microhydration to Bulk journal June 2011
Microsolvation of Uracil and Its Conjugate Bases: A DFT Study of the Role of Solvation on Acidity journal May 2011
Energy and Lifetime of Temporary Anion States of Uracil by Stabilization Method journal August 2011
On the Electronically Excited States of Uracil journal October 2008
Theoretical Study on the Mechanism of Low-Energy Dissociative Electron Attachment for Uracil journal December 2008
Valence and Dipole Binding of Electrons to Uracil journal February 1998
Modeling Solvent Effects on Electronic Excited States journal August 2011
Radiation Damage to DNA: The Indirect Effect of Low-Energy Electrons journal February 2013
Dynamics of the Dissociating Uracil Anion Following Resonant Electron Attachment journal October 2014
Core-excited and shape resonances of uracil journal January 2016
Intramolecular dissociative electron transfer journal January 2005
Stabilization calculation of the energy and lifetime of metastable SO42− journal February 2002
Electron attachment to gas-phase uracil journal April 2004
Radiation damage of biosystems mediated by secondary electrons: Resonant precursors for uracil molecules journal April 2004
Low-energy electron scattering from DNA and RNA bases: Shape resonances and radiation damage journal February 2006
Effects of microsolvation on uracil and its radical anion: Uracil∙(H2O)n (n=1–5) journal October 2006
R-matrix calculation of low-energy electron collisions with uracil journal April 2009
Comparison of simple potential functions for simulating liquid water journal July 1983
Gaussian basis sets for use in correlated molecular calculations. I. The atoms boron through neon and hydrogen journal January 1989
Equation of motion coupled cluster method for electron attachment journal March 1995
The dipole bound-to-covalent anion transformation in uracil journal January 1998
Shape resonance spectra of uracil, 5-fluorouracil, and 5-chlorouracil journal January 2014
DNA strand breaks and crosslinks induced by transient anions in the range 2-20 eV journal April 2014
Electron-induced hydrogen loss in uracil in a water cluster environment journal May 2014
Theoretical study of resonance formation in microhydrated molecules. II. Thymine-(H2O)n, n = 1,2,3,5 journal July 2017
Solvent effects on the π* shape resonances of uracil journal February 2020
The Molpro quantum chemistry package journal April 2020
Water mediated electron attachment to nucleobases: Surface-bound vs bulk solvated electrons journal July 2020
Software for the frontiers of quantum chemistry: An overview of developments in the Q-Chem 5 package journal August 2021
Shape resonance induced electron attachment to cytosine: The effect of aqueous media journal December 2023
Exploring electronic resonances in pyridine: Insights from orbital stabilization techniques journal October 2024
Interconnections between dissociative electron attachment and electron-driven biological processes journal January 2018
Radiation-induced DNA Damage and Its Repair journal January 1987
Calculation of the discrete component of resonance states in negative ions by variation of nuclear charges journal February 1985
Radiation-induced DNA damage responses journal December 2006
DNA Strand Breaks Induced by 0–4 eV Electrons: The Role of Shape Resonances journal August 2004
MOLECULAR BIOLOGY:A Sting in the Tail of Electron Tracks journal March 2000
Resonant Formation of DNA Strand Breaks by Low-Energy (3 to 20 eV) Electrons journal March 2000
Low energy electron-driven damage in biomolecules journal August 2005
Structures in dissociative electron attachment cross-sections in thymine, uracil and halouracils journal August 2005
ACCESS: Advancing Innovation conference July 2023
Accurate First Principles Model Potentials for Intermolecular Interactions journal April 2013
Biomolecular Damage Induced by Ionizing Radiation: The Direct and Indirect Effects of Low-Energy Electrons on DNA journal April 2015
The Mechanism of Double-Strand DNA Break Repair by the Nonhomologous DNA End-Joining Pathway journal June 2010
Equation-of-Motion Coupled-Cluster Methods for Open-Shell and Electronically Excited Species: The Hitchhiker's Guide to Fock Space journal May 2008

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