Journal of the Faculty of Fisheries and Animal Husbandry, Hiroshima University Volume 12 Issue 1
1973-06-30 発行

Studies on Carotenoprotein In Aquatic Animals : Ill. The Relationship between Blue and Purple Carotenoproteins in Crayfish (Cambarus clarkii) Exoskeleton

水産動物のカロチノプロテインに関する研究 : III アメリカザリガニ甲殻の青色カロチノプロテインと紫色カロチノプロテインの関係
Nakagawa, Heisuke
Kayama, Mitsu
Asakawa, Suezo
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abstract
From the results of the electrophoretic and the amino acid determinations, the apoproteins prepared from blue carotenoprotein (B) and purple carotenoprotein (P) of the crayfish (Cambarus clarkii) exoskeleton were found to consist of different subunit.

P, molecular size about 5×104, was derived from B with the molecular size about 105 by urea treatment. B was able to dissociate to P and carotenoid-free proteins due to the decrement of the prosthetic group carotenoid content under the certain conditions, these thereafter resulted by aggregation in a red carotenoprotein (R) with lower carotenoid content.

The possibility of conversion among three carotenoproteins in the exoskeleton under certain conditions was discussed.