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Effects of proton irradiation on single-stranded DNA studied by using X-ray photoelectron spectroscopy
- Authors
- Lee, E.; Lee, Cheol Eui; Han, J. H.
- Issue Date
- Aug-2016
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Single-stranded DNA; Proton irradiation effect; X-ray photoelectron spectroscopy
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.69, no.4, pp.578 - 583
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 69
- Number
- 4
- Start Page
- 578
- End Page
- 583
- ISSN
- 0374-4884
- Abstract
- X-ray photoelectron spectroscopy (XPS) has been employed in order to study the effects of proton irradiation on herring sperm single-stranded DNA. Systematic changes of the chemical shifts in the C, N, O, and P XPS line components as functions of the irradiation dose were observed, indicative of the bonding configurations in the DNA system. While the C 1s XPS lines showed weak blueshifts, the N 1s, O 1s, and P 2p XPS lines showed blueshifts with a marked dependence on the irradiation dose in a prominent manner. Our results show that linear energy transfer by charged particles and photons may have distinct molecular-level effects as the C 1s, N 1s, O 1s, and P 2p XPS lines showed redshifts in our previous study of effects of the gamma-ray irradiation on the same system.
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