Roux's archives of developmental biology

, Volume 197, Issue 7, pp 377–382

On the origin of the yolk protein ferritin in snails

  • Werner Bottke
  • Monika Burschyk
  • Jutta Volmer
Article

DOI: 10.1007/BF00398988

Cite this article as:
Bottke, W., Burschyk, M. & Volmer, J. Roux's Arch Dev Biol (1988) 197: 377. doi:10.1007/BF00398988

Summary

The iron storage protein, ferritin, is the major yolk protein in freshwater snails. In this report we show by in vitro labelling experiments that yolk ferritin of the snails Lymnaea stagnalis L. and Planorbarius corneus L. is an exogenous protein synthesized in the midgut gland and secreted into the hemolymph. Gonad and mantle tissue are inactive in the synthesis of yolk ferritin, but, together with the midgut gland, they synthesize another ferritin type (soma ferritin) which is not released into the hemolymph and which may be a housekeeping ferritin. Soma ferritin and yolk ferritin are not in a precursor/product relationship since subunits of both ferritins are synthesized as primary translation products in rabbit reticulocyte lysate programmed with poly (A)+ RNA from midgut gland and gonad. Results suggest that both ferritins are synthesized on different mRNAs (and possibly on different genes) so they may be regulated in a different way.

Key words

Vitellogenesis Ferritin synthesis in vitro Ferritin mRNAs Lymnaea stagnalis Planorbarius corneus 

Copyright information

© Springer-Verlag 1998

Authors and Affiliations

  • Werner Bottke
    • 1
  • Monika Burschyk
    • 1
  • Jutta Volmer
    • 1
  1. 1.Zoologisches Institut der UniversitätMünsterFederal Republic of Germany

Personalised recommendations