A novel lantibiotic, nukacin ISK-1, of staphylococcus warneri ISK-1: Cloning of the structural gene and identification of the structure

Toshihiro Sashihara, Hirokazu KimuRa, Toshimasa Higuchi, Asaho Adachi, Hiromi Matsusaki, Kenji Sonomoto, Ayaaki Ishizaki

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

Staphylococcus warneri ISK-1, which we had previously reported as Pediococcus sp. ISK-1, produces a novel bacteriocin, nukacin ISK-1. Edman degradation of the chemically reduced nukacin ISK-1 produced a sequence of 27 amino acids, 7 of which were unidentified. Using single-specific-primer-PCR product as a probe, a 3.6-kb HindIII fragment containing the nukacin ISK-1 structural gene (nukA) was cloned and sequenced. The deduced amino acid sequence of nukacin ISK-1 had 57 amino acids, including a 30-amino acid leader region. The propeptide sequence showed significant similarity to those of lacticin-481 type lantibiotics. In the region upstream of nukA, a part of a long open reading frame (ORF), designated as nukM, encoding a putative modification enzyme was oriented in the opposite direction. In the region downstream of nukA, ORF1 was found in which the sequence of the putative translational product was similar to various response regulatory proteins.

Original languageEnglish
Pages (from-to)2420-2428
Number of pages9
JournalBioscience, Biotechnology and Biochemistry
Volume64
Issue number11
DOIs
Publication statusPublished - 2000

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry

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