軟体動物殻体中の有機基質の研究 I : 真珠層と稜柱層中の有機基質のアミノ酸組成

概要

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The comparison of the amino acid compositions of the water-soluble and water-insoluble matrices in molluscan shells was made between the nacreous and prismatic layers of seven different species. The amino acid compositions of the Ca-binding glycoproteins in the water-soluble matrix of the marine Pelecypoda and Gastropoda were similar to each other, regardless of the ultrastructure of shell and of the taxonomic position, while those of the fresh-water Pelecypoda were different from those of the marine species. On the other hand, the amino acid compositions of the unfractionated water-insoluble matrix in the nacreous layer were separated from those in the prismatic layer and they also differed slightly according to the taxonomic position, while no distinct difference could be noticed between the marine and fresh-water species. The compositions of the Ca-binding glycoproteins and unfractionated water-insoluble matrix in both shell layers of Cephalopoda was unique as compared to those of the other classes. These data imply that the specific component in the water-insoluble matrix may play an important role in determining the ultrastructure of molluscan shell.
日本貝類学会の論文
1988-07-15