Structure and function of a long alternating purine-pyrimidine sequence in the mouse alcohol dehydrogenase Adh-1 Gene

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The mouse alcohol dehydrogenase gene Adh-1 contains an unusually long alternating purine-pyrimidine sequence within its first intron. This alternating sequence differs in length between strains that differ in the extent of Adh-1 expression, and it has been suggested that it plays a role in gene expression. We demonstrate that this alternating sequence can form Z-DNA in vitro. The alternating sequence can act as a positive regulatory element in transient transfection assays in hepatoma cell lines, but not in CV-1 (monkey kidney) cells, suggesting that it can act as a tissue-specific regulatory element. Nuclear run-on experiments showed that the differential expression of Adh-1 from high- and low-activity strains is, however, controlled at the post-transcription level.

Original languageEnglish (US)
Pages (from-to)407-412
Number of pages6
JournalArchives of Biochemistry and Biophysics
Issue number1
StatePublished - Jan 1995



  • Alcohol dehydrogenase
  • C/s-acting element
  • CAT assay
  • DN A conformation
  • Gene expression
  • Z-DNA

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology

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