1991 Fiscal Year Final Research Report Summary
Studies on structure and functions of silkworm proteins
| Project/Area Number |
01480056
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
蚕糸学
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| Research Institution | University of Tokyo |
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Principal Investigator |
NAGATA Masao Fac. Agricul, Univ. Tokyo Associate Professor, 農学部, 助教授 (70107407)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Hitoshi Tokyo Agricul. Univ. Visiting Professor, 総合研究所, 客員教授 (10011868)
SHIMADA Toru Fac. Agricul, Univ. Tokyo Assistant Professor, 農学部, 助手 (20202111)
KOBAYASHI Masahiko Fac. Agricul, Univ. Tokyo Professor, 農学部, 教授 (60162020)
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| Project Period (FY) |
1989 – 1991
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| Keywords | Silkworm / Proteins |
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| Research Abstract |
Insect haemolymph contained a large amount of proteins, which enormously varied with development. Many of these proteins have the same structure as a hexamer of subunits with about 80, 000 dalton, but their functions are different. There are two proteins belonging to a category of storage proteins in the silkworm, Bombyx mori. We investigated the structure and function of these storage proteins, arylphorin and larval female-specific protein. 1)Purification methods were improved to obtain a large amount of storage proteins. 2)Nature of storage proteins such as molecular weights of native proteins and subunits, isoelectric point, conjugated components were revealed. 3)Association, dissociation of subunits of storage proteins and agglutination of proteins under various conditions were analyzed. 4)Changes of protein metabolism and role of storage proteins during larval development were examined. 5)Relationship between storage protein concentrations and nutritional conditions of silkworm larvae was investigated.
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