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Insect Biochem Mol Biol. 1999 Mar;29(3):277-84.

Pheromone binding proteins in the European and Asian corn borers: no protein change associated with pheromone differences.

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Section of Ecology and Systematics, Cornell University, Ithaca, NY 14853, USA.


Pheromone binding proteins (PBPs) are thought to play a role in the recognition of sex pheromone in male moth antennae. By binding selectively to different components of pheromone blends, these PBPs could play a role in differentiating between structurally related compounds. In this study we have characterized the pheromone binding proteins of two pheromone strains of the European corn borer (Ostrinia nubilalis) and also the closely related Asian corn borer (O. furnacalis). We have been able to detect only one PBP gene, which encodes a mature protein that is identical in amino acid sequence in individuals from different pheromone strains and different species. This result suggests that the PBP is not detecting differences between the two isomeric compounds of the European corn borer pheromone or the difference in double bond position between the pheromone molecules of the European and Asian corn borers.

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