Retroviral-like features in the monomer of the major satellite DNA from the South American rodents of the genus Ctenomys

DNA Seq. 1993;3(6):379-81. doi: 10.3109/10425179309020839.


It is well known that uninfected mammalian cells contain DNA sequences which are closely related to retroviral genomic segments. However, these sequences seldom (if ever) have been found associated to highly repetitive (satellite) DNA. RPCS is a 348 bp monomer of a major satellite DNA from the South American rodents of the genus Ctenomys. It was found that RPCS contains several elements which are typical of the U3 region of retroviral LTRs. These elements are: a) a polypurine tract; b) two enhancer core sequences; c) two NF1 binding sites; d) two C/EBP binding sites; e) two CCAAT-motifs; f) a TATA box, and g) two putative polyadenylation motifs. Furthermore, the relative positions of these elements are as in the U3 retroviral regions.

MeSH terms

  • Animals
  • Base Sequence
  • Binding Sites
  • CCAAT-Enhancer-Binding Proteins
  • DNA, Satellite / genetics*
  • DNA, Satellite / metabolism
  • DNA-Binding Proteins / metabolism
  • Molecular Sequence Data
  • NFI Transcription Factors
  • Nuclear Proteins / metabolism
  • Retroviridae / genetics*
  • Rodentia / genetics*
  • TATA Box
  • Transcription Factors / metabolism


  • CCAAT-Enhancer-Binding Proteins
  • DNA, Satellite
  • DNA-Binding Proteins
  • NFI Transcription Factors
  • Nuclear Proteins
  • Transcription Factors
  • transcription factor nuclear factor 1

Associated data

  • GENBANK/X69517