いろいろの動物の筋肉蛋白の溶出性に関する比較的研究

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Intending to know whether the quantitative relationship of water-extractable proteins to non-myosins in muscle is correlated with the development of SB in its aqueous extract, a comparative study was made with muscles of some Mollusca, Crustacea, fishes and bull-frog. (1) Muscles of used animals were found to be practically grouped into three types: Mollusca-, Crustacea-, and Fish-types (cf. Table 4). (2) In Mollusca-type muscles SB was detected in aqueous extracts and water soluble proteins far exceed non-myosins in amount (∑S>N). (3) In fish and Crustacea-types SB was not detectable in aqueous extracts, and ∑S ?? N in the former but ∑S>or ?? N in the latter. (4) Intensity of SB of salt extracts was apparently greater in Cephalopada and Crustacea than in fishes. (5) Muscles showed each characteristic pattern corresponding to the three types also in aspects of precipitates spun down in aqueous extraction mixture.
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