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. 2011 Mar 29;6(3):e18356. doi: 10.1371/journal.pone.0018356

Table 1. Pseudomonas aeruginosa strains used in this study.

Strain Relevant characteristics/description
PA103 Wild-type cytotoxic strain, expresses type III proteins and translocates effectors, ExoU and ExoT.
PA103+pUCP-pS-pcrV Wild-type strain harboring a plasmid copy of pcrV under control of the type III exoS promoter. Cytotoxic.
PA103exsAΩ+pUCP Type III knockout strain, mutation in the type III regulatory gene, exsA, prevents activation of the type III secretion system. Noncytotoxic.
PA103ΔpcrV+pUCP (PA103ΔV+pUCP) Nonpolar pcrV deletion harboring a plasmid. Noncytotoxic and constitutive secretion.
PA103ΔpcrV+pUCP-pS-pcrV(PA103ΔV+pcrV) Complemented mutant harboring a plasmid copy of pcrV under control of the type III exoS promoter. Cytotoxic.
PA103ΔV+pUCP-pS-exoUS142A(PA103ΔV+exoU-S142A) Nonpolar pcrV mutant harboring a plasmid copy of exoU with a point mutation at its catalytic site. Noncytotoxic and constitutive secretion.
PA103ΔpopB (PA103ΔB) Nonpolar popB deletion. Noncytotoxic.
PA103ΔpopB+pUCP-pS-popB(PA103ΔB+popB) Complemented mutant harboring a plasmid copy of popB. Cytotoxic.
PA103ΔUT+pUCP(PA103ΔUT+pUCP) ExoU and ExoT knockout strain harboring a plasmid. Regulated secretion and noncytotoxic.
PA103ΔUT+pUCP-pS-exoUS142A(PA103ΔUT+exoU-S142A) ΔUT strain harboring a plasmid copy of exoU with a point mutation at its catalytic site. Regulated secretion and noncytotoxic.
PA103ΔpcrV+pUCP-pS-pcrV-EZ(PA103ΔV+EZ)EZ16, EZ28, EZ77, EZ96, EZ101, EZ104, EZ105, EZ107, EZ109, EZ113, EZ116, EZ154, EZ155, EZ179, EZ180, EZ198, EZ202, EZ204, EZ214 Nonpolar pcrV mutant harboring a plasmid copy of pcrV::EZ linker.Regulated secretion and cytotoxic.
PA103ΔV+EZ44, EZ52, EZ64 Deregulated secretion and cytotoxic.
PA103ΔV+EZ119, EZ120, EZ131, EZ134, EZ138, EZ279 Deregulated secretion and noncytotoxic.
PA103ΔpcrV+pUCP-pS-pcrV-L63A or D133A (PA103ΔV+L63A or D133A) Nonpolar pcrV mutant harboring a plasmid copy of pcrV with a point mutation at amino acid residue 63 or 133. Regulated secretion with delayed cytotoxicity.
PA103+pUCP-pS-pcrV-EZ (PA103+EZ) EZ44, EZ52, EZ64, EZ119, EZ120, EZ131, EZ134, EZ138, EZ279 Wild-type strain harboring a plasmid copy of pcrV::EZ-linker.Regulated secretion and cytotoxic.
PA103+pUCP-pS-pcrV-L63A or D133A(PA103+L63A or D133A) Wild-type strain harboring a plasmid copy of pcrV with a point mutation at amino acid residue 63 or 133. Regulated secretion and cytotoxic.