Identification of two CO2 receptors in Drosophila antennae, Gr21a and Gr63a, determines that their co-expression is necessary and sufficient for CO2 sensing. Flies lacking one of the two are insensitive to CO2, and confer CO2 responsivity when both receptors are expressed in heterologous neurons.
- Walton D. Jones
- Pelin Cayirlioglu
- Leslie B. Vosshall