Identification and Characterization of a Metalloprotein Involved in Gallium Internalization in Pseudomonas aeruginosa.
Guo, Y., Li, W., Li, H., Xia, W.(2019) ACS Infect Dis 5: 1693-1697
- PubMed: 31475514 
- DOI: https://doi.org/10.1021/acsinfecdis.9b00271
- Primary Citation of Related Structures:  
6IVY, 6IWF, 6J2S - PubMed Abstract: 
Gallium nitrate (Ganite) is a potential drug for the treatment of Pseudomonas aeruginosa infection. CRISPR/Cas9-based gene mutagenesis studies reveal that siderophore pyochelin-facilitated uptake and an ABC transporter are two major Ga 3+ internalization pathways in Pseudomonas aeruginosa ( P. aeruginosa ). Crystal structures reveal that Ga 3+ and Fe 3+ occupy exactly the same metal site of HitA, a periplasmic iron-binding protein of the ABC transporter system. The study provides a molecular basis for Ga 3+ internalization by P. aeruginosa and facilitates gallium-based antimicrobial drug development.
Organizational Affiliation: 
MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-sen University , Guangzhou , Guangdong 510275 , China.