doi: 10.1021/tx010127h.
Interchain cross-linking of DNA mediated by the principal adduct of acrolein
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- PMID: 11712904
- DOI: 10.1021/tx010127h
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Interchain cross-linking of DNA mediated by the principal adduct of acrolein
Chem Res Toxicol.
2001 Nov.
Abstract
A DNA duplex containing the primary acrolein adduct, 3-(2-deoxy-beta-D-erythro-pentofuranosyl)-5,6,7,8-tetrahydro-8-hydroxypyrimido[1,2-a]purin-10(3H)-one (2), of deoxyguanosine in a 5'-CpG sequence context spontaneously but reversibly formed an interchain cross-link with the exocyclic amino group of deoxyguanosine in the opposing chain. The linkage was sufficiently stable that the cross-linked duplex could be isolated by HPLC and characterized by MALDI-TOF mass spectrometry. Enzymatic degradation gave bis-nucleoside 6, which was independently prepared by direct reaction of 2 with dGuo.
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