Structural model of the predicted C-type lectin SFP24F. The D. melanogaster SFP24F protein structure was predicted by PHYRE by threading the sequence onto a C-type lectin from mouse (PDB ID no. 2ox9). Sites indicated by space-filled molecules were predicted to have evolved under positive selection (dark blue sites, codeml model M8 BEB P > 0.95, light blue sites, P > 0.90). As oriented in the figure, the carbohydrate recognition domain is located at the bottom of the protein.