אסיף מאגר המחקר החקלאי

Ecdysone during insect development. III. Activities of some enzymes of tyrosine metabolism in comparison with ecdysone titer during the development of the blowfly, Calliphora erythrocephala Meig

Year:

1965

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Volume :

5

Co-Authors:

Shaaya, E., Institute of Physiological Chemistry, University of Marburg, Marburg, Germany
Sekeris, C.E., Institute of Physiological Chemistry, University of Marburg, Marburg, Germany

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Abstract:

The activities of DOPA-decarboxylase and the phenoloxidase system, two enzymes involved in tyrosine metabolism, were followed during the development of the blowfly, Calliphora erythrocephala, and correlated with ecdysone titer. The DOPA-decarboxylase activity shows similarity to the ecdysone titer during the larval stage and pupation, but not during the pupal stage and eclosion. Of the components of the phenoloxidase system, only the "activator" activity shows some similarity to ecdysone concentration during the last larval stage. These findings are discussed in relation to the mechanism of action of ecdysone. © 1965.

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