摘要:
Photosensitized one-electron oxidation of 5-methylcytosine in DNA by 2-methyl- 1,4-naphthoquin one, attached to 5'-end of an oligodeoxynucleotide strand, produced 5-formylcytosine and led to selective DNA strand cleavage at the original 5-methylcytosine configuration. This specified photoreaction is useful for positive display of 5-methylcytosine in DNA on a sequencing gel. (C) 2004 Elsevier Ltd. All rights reserved.