Intracellular Alginate-oligosaccharide Degrading Enzyme Activity that is Incapable of Degrading Intact Sodium Alginate from a Marine Bacterium Alteromonas sp.

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Intracellular homo-and hetero-polymeric blocks degrading enzyme activity incapable of degrading intact sodium alginate was detected in Alteromonas sp. strain H-4. The enzyme activity for polyM and MG blocks was highest during the late log phase of the bacterium and was not induced by the addition of sodium alginate to the culture medium. The activity for MG random block was as high as that for polyM, but that for polyG block was half and that for sodium alginate was one fifth. At least 4 kinds of enzyme activities, a polyM specific, a MG-polyM specific, and two kinds of polyG specific enzymes, were detected from the crude intracellular fraction, but a trace spot for sodium alginate. Analysis of reaction products using a partially purified preparation of the enzyme indicated that the enzyme generated a saturated diuronate and an unsaturated polyuronide from polyM block. These results suggest that the intracellular enzymes can degrade only oligosaccharides generated from high molecular alginate by the extracellular alginate lyase and may have an important role in the alginate metabolism of the bacterium.

収録刊行物

  • Fisheries science : FS  

    Fisheries science : FS 64(2), 320-324, 1998 

    Japanese Society of Fisheries Science

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各種コード

  • NII論文ID(NAID)
    10004874156
  • NII書誌ID(NCID)
    AA10993718
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09199268
  • NDL 記事登録ID
    4462740
  • NDL 雑誌分類
    ZR26(科学技術--農林水産--水産)
  • NDL 請求記号
    Z54-H592
  • データ提供元
    CJP書誌  CJP引用  NDL  IR 
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