The protein component of bacterial ribonuclease P flickers the metal ion response to the substrate shape preference of the ribozyme

Tomoaki Ando, Terumichi Tanaka, Yo Kikuchi

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5 Citations (Scopus)


The substrate shape specificity of the Escherichia coli ribonuclease P (RNase P) ribozyme depends on the concentration of magnesium ion. At 10 mM or more, it can cleave a hairpin substrate as well as a cloverleaf pre-transfer RNA (tRNA). The results showed, however, that the holo enzyme cleaved the hairpin substrate at low concentrations of magnesium ion. Considering that the homologous E. coli tRNAs are resistant to internal cleavage by the RNase P, the phenomena suggest that this catalytic activity might take part in the removing the mis-folded RNAs in the cell.

Original languageEnglish
Pages (from-to)2294-2296
Number of pages3
JournalBioscience, Biotechnology and Biochemistry
Issue number10
Publication statusPublished - 2003 Oct
Externally publishedYes



  • Escherichia coli
  • Holo enzyme
  • Ribonuclease P
  • Ribozyme
  • Specificity

ASJC Scopus subject areas

  • Food Science
  • Applied Microbiology and Biotechnology
  • Chemistry (miscellaneous)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry
  • Biotechnology
  • Bioengineering

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