“…Several proteins that play a role in copper sensing, transfer, and distribution between compartments have been identified in the periplasm, cytoplasm, inner and outer membranes of Pseudomonas aeruginosa (Yoneyama and Nakae, ; Teitzel et al, ; Caille et al, ; Frangipani and Haas, ; Thaden et al, ; González‐Guerrero et al, ; Elsen et al, ; Quintana et al, ). Extracellular Cu 2+ likely enters the periplasm through OprC, an outer membrane porin (Yoneyama and Nakae, ).…”