snail homolog 2 |
snake venom hemorrhagins |
PTAG |
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symbol: snk. Snake, encoded by gene CG7996, is a secreted serine protease required for the establishment of the dorsal-ventral axis during the embryonic development of Drosophila (DeLotto and Spierer, 1986).
LeMosy et al (2001) have shown that the zymogen form of snake is activated by another protease, Gastrulation-defective, which in turn activates protease Easter exclusively on the ventral side of the embryo. Activated Easter then processes Spätzle into the activating ligand for the Toll receptor.
For other proteins/peptides with functions in innate immunity
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