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Isolation and structure of the Streptococcus faecalis sex pheromone, cAM373

  • Masaaki Mori
  • , Hideo Tanaka
  • , Youji Sakagami
  • , Akira Isogai
  • , Masahiko Fujino
  • , Chieko Kitada
  • , Bryan A. White
  • , Florence Y. An
  • , Don B. Clewell
  • , Akinori Suzuki

Research output: Contribution to journalArticlepeer-review

Abstract

The Streptococcus faecalis sex pheromone, cAM373, which induces a mating response of donor cells harboring plasmid pAM373 and is also produced by Staphylococcus aureus, was isolated and its structure determined. Supernatant from an overnight culture of a recipient strain was subjected to successive purification procedures, and 4.4 μg cAM373 was obtained. The isolated pheromone showed activity at a concentration as low as 5 × 10-11 M. Sequence analysis indicated that cAM373 was a heptapeptide, H-Ala-Ile-Phe-Ile-Leu-Ala-Ser-OH, and that its Mr was 733. A synthetic replicate of the peptide showed the same biological activity and chromatographic behavior as the native cAM373.

Original languageEnglish (US)
Pages (from-to)69-72
Number of pages4
JournalFEBS Letters
Volume206
Issue number1
DOIs
StatePublished - Sep 29 1986
Externally publishedYes

Keywords

  • (Streptococcus faecalis, staphylococcus aureus)
  • Conjugative plasmid transfer Amino acid sequence
  • Sex pheromone

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology

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