ABCG2 and cystic fibrosis: Best-hit homologs to B. cenocepacia J2315 genes were found for all proteins identified in the comparison between IST4134 and IST439, with the exception of the ABC transporter-related protein A9AH88, with 97% of identity to the L-glutamate ABC transporter ATP-binding protein encoded by gene Bcen_0189 from B. cenocepacia AU1054, a strain that was recovered from the blood of a CF patient [30] (Table 1).