Characterization of the Dextranase Gene (<i>dex</i>) of <i>Streptococcus mutans</i> and Its Recombinant Product in an <i>Escherichia coli</i> Host

• Igarashi Takeshi

  Department of Oral Microbiology, Showa University School of Dentistry

• Yamamoto Ayako

  Department of Oral Microbiology, Showa University School of Dentistry

• Goto Nobuichi

  Department of Oral Microbiology, Showa University School of Dentistry

抄録

The gene (dex), which encodes the Streptococcus mutans dextranase (Dex), was cloned in Escherichia coli. The E. coli host harboring a recombinant plasmid (pSD2) containing an 8-kb BamHI insert produced a Dex protein of 133 kDa as well as smaller enzymes of 118, 104, and 88 kDa. The Dex produced by the recombinant E. coli was apparently located in the cytoplasmic fraction, not in the periplasmic nor the extracellular fractions. Subcloning and deletion analysis of pSD2 showed that the structural gene of Dex was encoded by a 4-kb BamHI-SalI fragment. The fragment also contained the dex promoter which was effective in the E. coli cell.

収録刊行物

• MICROBIOLOGY and IMMUNOLOGY

  MICROBIOLOGY and IMMUNOLOGY 39 (6), 387-391, 1995

  Center For Academic Publications Japan

詳細情報

• CRID: 1570572703128268800
• NII論文ID: 130003484245
• ISSN: 03855600
• Web Site: https://jlc.jst.go.jp/DN/JALC/00081651474?from=CiNii
• 本文言語コード: en
• データソース種別:
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