2023 Fiscal Year Final Research Report
Study on the role of paramyosin in the myostracum formation on the surface of the shell attached to the adductor muscle
Project/Area Number |
21H02284
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 40040:Aquatic life science-related
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Research Institution | Mie University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
鈴木 道生 東京大学, 大学院農学生命科学研究科(農学部), 教授 (10647655)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | 二枚貝 / 光輝層 / 閉殻筋 / 真珠層 / アコヤガイ / 真珠 / 筋タンパク質 / 接着 |
Outline of Final Research Achievements |
In bivalves, the adductor muscle and the shell are tightly adhered. The myostracum layer is formed on the adhesive surface of the shell. As the myostracum contains paramyosin, one of the major muscle proteins in bivalves, we investigated how paramyosin is involved in the formation of the myostracum layer. It is revealed that paramyosin is distributed not only in the myostracum layer but also throughout the nacreous layer of the shell. Paramyosin also resides in the nacreous layer of Akoya pearls and is distributed on the surface and around irregular structures inside the nacreous layer. Calcium carbonate crystallization assay in the presence of paramyosin resulted in forming plate-like aragonite crystals. These results indicate that paramyosin is involved in the aragonite crystal formation.
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Free Research Field |
水圏生命科学
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Academic Significance and Societal Importance of the Research Achievements |
本研究では、二枚貝貝殻と閉殻筋の接着に関わると考えられる光輝層構造が筋タンパク質によって形成される可能性を示した。これは貝殻と閉殻筋の接着機構の解明への手がかりとなるものである。また、真珠にも筋タンパク質が含まれることが分かり、真珠品質と筋タンパク質が関係していることを示した。これは高品質真珠作出のための基礎的知見となるものである。
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