20-Hydroxyecdysone induced phosphorylation of fat body proteins in Mamestra brassicae

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20-Hydroxyecdysine-induced phosphorylation of certin fat body proteins, has been observed in Mamestra brassicae during the wandering period of the last larval stage. After fractionation of fat body cells one of the phosphorylated proteins was localized in the fractions containing mainly protein storage granules. In the same period the activity of acid phosphatase was very low in the presence of 20-hydroxyecdysone, especially in the granule fractions. The functional relation of protein phosphorylation and the inhibition of the lysosomal enzyme activity is suggested.

Original languageEnglish
Pages (from-to)623-629
Number of pages7
JournalInsect Biochemistry
Issue number6
Publication statusPublished - 1988


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