Characterization of a novel repetitive secretory protein specifically expressed in the modified salivary gland of Hydropsyche sp. (Trichoptera; Hydropsychidae)

  • Jai Hoon Eum
  • , Sung Moon Yoe
  • , Young R. Seo
  • , Seok Woo Kang
  • , Sung Sik Han*
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    Here, we report the cloning and characterization of a common salivary gland-specific gene, Nf-1, from late instar Hydropsyche sp. larvae, and show that the corresponding gene product is translated in the gland and secreted to the gland lumen. The deduced Nf-1 protein is primarily composed of five repetitive sequence units of 63-65 amino acids, and contains a putative signal sequence composed of 19 amino acids. Secreted Nf-1 (∼37 kDa) was localized to the gland lumen by Western blotting of gland and lumen fractions. Together, the structure, expression pattern and protein localization of Nf-1 indicate that this protein is likely to be a major component of the silk shields and nets produced by the aquatic insect, Trichoptera.

    Original languageEnglish
    Pages (from-to)435-441
    Number of pages7
    JournalInsect Biochemistry and Molecular Biology
    Volume35
    Issue number5
    DOIs
    Publication statusPublished - 2005 May

    Bibliographical note

    Funding Information:
    This study was supported by the Bio-Green 21 Grant from the Rural Development Administration of Korea and the Brain Korea 21 Grant from the Ministry of Education of Korea to S.S. Han in 2004.

    Keywords

    • Expressed sequence tags
    • Modified salivary gland
    • Nf-1 protein (Nest forming protein-1)
    • Repetitive amino acid
    • Trichoptera Hydropsyche sp.

    ASJC Scopus subject areas

    • Biochemistry
    • Molecular Biology
    • Insect Science

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