Abstract
Transient radicals of nucleic acid components formed by ${\rm e}_{{\rm aq}}^{-}$ and OH reaction during pulse radiolysis have been observed using the electron paramagnetic resonance (EPR) technique. The effect of cysteamine and cysteine on the decay properties of the radical has been investigated. For the natural bases, the predominant mechanism of protection seems to be a competition reaction for the OH rather than a hydrogen transfer from the thiol to the organic radical; however, hydrogen transfer does occur for dihydrothymine. Rate constants are given for these reactions and for reactions with OH and O2.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
