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Science 31 May 1968:
Vol. 160. no. 3831, pp. 999 - 1001
DOI: 10.1126/science.160.3831.999-a
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Articles

Yolk Protein: Structural Changes during Vitellogenesis in the Cockroach Leucophaea maderae

Victor J. Brookes 1 and Roger K. Dejmal 1

1 Science Research Institute, and Department of Entomology, Oregon State University, Corvallis 97331

Most of the yolk protein in the mature egg of Leucophaea maderae consists of one large component, whereas a second smaller protein is present during the early stages of vitellogenesis. The large protein can be converted to the smaller one and to even smaller units by mild alkaline conditions in vitro. After injection of uniformly labeled leucine-C14 into females with developing eggs, the smaller yolk protein becomes labeled first, the label is then transferred to the large protein upon prolonged exposure.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Female Specific Protein: Biosynthesis Controlled by Corpus Allatum in Leucophaea maderae.
F. Engelmann (1969)
Science 165, 407-409
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