| Photochemistry of pyrimidine bases as studied by e.s.r. and spin-trapping. | |
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MedLine Citation:
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PMID: 6271695 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The direct photoexcitation of pyrimidine bases in D2O solutions yields free radicals which could be conveniently identified by spin-trapping with 2-methyl-2-nitrosopropane. Most of the radicals formed were attributed to D-addition to one end of the 5,6 double bond. However, orotic acid and iso-orotic acid yielded N(3) centred free radicals, formed by homolytic cleavage of the N-H bond. No indication could be found for a free radical involvement in the photocleavage of cyclobutane-type pyrimidine dimers. |
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Authors:
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I Rosenthal; M M Mossoba; P Riesz |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: International journal of radiation biology and related studies in physics, chemistry, and medicine Volume: 40 ISSN: 0020-7616 ISO Abbreviation: Int. J. Radiat. Biol. Relat. Stud. Phys. Chem. Med. Publication Date: 1981 Oct |
Date Detail:
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Created Date: 1982-01-09 Completed Date: 1982-01-09 Revised Date: 2000-12-18 |
Medline Journal Info:
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Nlm Unique ID: 0374725 Medline TA: Int J Radiat Biol Relat Stud Phys Chem Med Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 385-95 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Electron Spin Resonance Spectroscopy
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methods Free Radicals Photochemistry Pyrimidines* |
| Chemical | |
Reg. No./Substance:
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0/Free Radicals; 0/Pyrimidines |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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