Specific Binding of Silkworm Bombyx mori 30-kDa Lipoproteins to Carbohydrates Containing Glucose.

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  • UJITA Minoru
    <i>Laboratory of Biological Chemistry, Department of Applied Biological Chemistry, Faculty of Agriculture, Meijo University</i> <i>Agricultural High-Tech Research Center, Meijo University</i>
  • KIMURA Akihiro
    <i>Laboratory of Biological Chemistry, Department of Applied Biological Chemistry, Faculty of Agriculture, Meijo University</i>
  • NISHINO Daisuke
    <i>Laboratory of Biological Chemistry, Department of Applied Biological Chemistry, Faculty of Agriculture, Meijo University</i>
  • YOKOYAMA Eiji
    <i>Agricultural High-Tech Research Center, Meijo University</i>
  • BANNO Yutaka
    <i>Institute of Genetic Resources, Kyushu University</i>
  • FUJII Hiroshi
    <i>Institute of Genetic Resources, Kyushu University</i>
  • HARA Akira
    <i>Laboratory of Biological Chemistry, Department of Applied Biological Chemistry, Faculty of Agriculture, Meijo University</i> <i>Agricultural High-Tech Research Center, Meijo University</i>

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Other Title
  • Specific Binding of Silkworm<i>Bombyx mori</i>30-kDa Lipoproteins to Carbohydrates Containing Glucose
  • Glucan-binding activity of silkworm 30-kDa apolipoprotein and its involvement in defense against fungal infection.

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Abstract

  Insect lectins are important as part of nonspecific self-defense, but their antifungal mechanisms remain to be elucidated. Fungi contain glucans on the cell surface and insect glucan-binding proteins are considered to be essential for antifungal mechanisms. We purified glucose-binding proteins from hemolymph of pupae of the silkworm Bombyx mori, and the amino acid sequence analysis showed that their two proteins are 30-kDa lipoproteins, major components of B. mori hemolymph. These lipoproteins specifically bound to glucose and glucans, suggesting that they are involved in insect self-defense systems.<br>

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