Stoichiometry of DNA strand scission and aldehyde formation by bleomycin

R. M. Burger, J. Peisach, S. B. Horwitz

Research output: Contribution to journalArticlepeer-review

77 Scopus citations


A colorimetric assay of DNA breakage by bleomycin has been standardized and indicates that strand scission is stoichiometric with the formation of a single equivalent of an aldehydic compound consisting of base plus deoxyribose carbons 1' to 3'. Both strand scission and aldehyde formation require the presence of O2. An alternate DNA lesion inflicted by bleomycin, alkali labilization, is O2-independent, as is the accompanying release of free bases.

Original languageEnglish (US)
Pages (from-to)8612-8614
Number of pages3
JournalJournal of Biological Chemistry
Issue number15
StatePublished - 1982
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology


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