Retroactive, a membrane-anchored extracellular protein related to vertebrate snake neurotoxin-like proteins, is required for cuticle organization in the larva of Drosophila melanogaster.

Abstract excerpt

Mutations in the rtv gene cause disarrangement of chitin fibers in the cuticle of the Drosophila larva, and occasionally the cuticle detaches from the epidermis. We have identified the rtv gene, and using the new HHpred homology detection method, we show that the Rtv protein defines a new family of disulfide-rich proteins in insects that are related to vertebrate snake neurotoxin-like proteins, including CD59 and...

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