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Citation
Grau, Y., Gutzeit, H.O. (1990). Asymmetrically distributed ecdysteroid-related antigens in follicles and young embryos of Drosophila melanogaster.  Rouxs Arch. Dev. Biol. 198(5): 295--302.
FlyBase ID
FBrf0052916
Publication Type
Research paper
Abstract

We have produced monoclonal and polyclonal antibodies against an antigen that is asymmetrically distributed in mature oocytes of Drosophila melanogaster. During late oogenesis and early embryogenesis the antigen undergoes dramatic changes in its cellular localization: until about 2.5 h before completion of oogenesis it is homogeneously distributed in the cytoplasm, then it becomes localized in granules that are more numerous in posterior than in anterior peripheral positions of the ooplasm. The germ plasm is void of the antigen. Shortly after egg deposition the antigen is released from the granules and forms a shallow temporary gradient in the egg. Later during embryogenesis the antigen is associated with the yolk-containing cytoplasm. At the syncytial blastoderm stage it is also detected in the peripheral nuclei. Preliminary evidence suggests that the antigen is an ecdysteroid-related molecule. Five different anti-ecdysone antisera were found to bind to the same antigen or to an antigen with the same localization as our monoclonal antibody. In pattern mutants affecting anteroposterior polarity, the described asymmetrical distribution of the antigen is abnormal. In the mutant BicD, for example, which leads to the formation of two abdomina of opposite polarity, the antigen-containing granules are distributed homogeneously in mature oocytes.

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    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Rouxs Arch. Dev. Biol.
    Title
    Roux's Archives of Developmental Biology
    Publication Year
    1975-1996
    ISBN/ISSN
    0930-035X
    Data From Reference
    Alleles (16)
    Genes (16)