Send to:

Choose Destination
See comment in PubMed Commons below
Cell. 1994 Feb 25;76(4):677-88.

The spätzle gene encodes a component of the extracellular signaling pathway establishing the dorsal-ventral pattern of the Drosophila embryo.

Author information

  • 1Department of Molecular and Cell Biology, University of California, Berkeley 94720.


spätzle is a maternal effect gene required in the signal transduction pathway that establishes the dorsal-ventral pattern of the Drosophila embryo. spätzle acts immediately upstream of the membrane protein Toll in the genetic pathway, suggesting that spätzle could encode the ventrally localized ligand that activates the receptor activity of Toll. The spätzle gene encodes a novel secreted protein that appears to require activation by a proteolytic processing reaction, which is controlled by the genes that act upstream of spätzle in the genetic pathway. We propose that proteolytic processing of the spätzle protein is confined to the ventral side of the embryo and that the localization of processed spätzle determines where the receptor, Toll, is active.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk