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Structures of mollusc shell framework proteins

Author

Listed:
  • Shu Sudo

    (*Research Unit, Mikimoto Pharmaceutical Co., Ise)

  • Takahiko Fujikawa

    (Mie University Faculty of Medicine)

  • Takeshi Nagakura

    (Mie University Faculty of Medicine)

  • Takeshi Ohkubo

    (Mie University Faculty of Medicine)

  • Kesami Sakaguchi

    (Mie University Faculty of Medicine)

  • Minoru Tanaka

    (Mie University Faculty of Medicine)

  • Kunio Nakashima

    (Mie University Faculty of Medicine)

  • Takao Takahashi

    (Mie University Faculty of Bioresources)

Abstract

Mollusc shells consist of the nacreous mother-of-pearl layer and the prismatic layer. Both layers are microlaminate composites of CaCO3 crystals (aragonite in the nacre and calcite in the prismatic layer) and biopolymers. The main biopolymers are structural proteins, insoluble in water and methanoic acid, which determine the framework of each shell layer1,4 and bind soluble polyanionic proteins2,4 which determine the type of CaCO3 crystal that grows5,6. Here we report the sequences and structures of the framework proteins for the nacreous and prismatic layers of the pearl oyster, Pinctada fucata.

Suggested Citation

  • Shu Sudo & Takahiko Fujikawa & Takeshi Nagakura & Takeshi Ohkubo & Kesami Sakaguchi & Minoru Tanaka & Kunio Nakashima & Takao Takahashi, 1997. "Structures of mollusc shell framework proteins," Nature, Nature, vol. 387(6633), pages 563-564, June.
    • Handle: RePEc:nat:nature:v:387:y:1997:i:6633:d:10.1038_42391
    DOI: 10.1038/42391
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