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Ability of the PapC and FimD usher mutants to assemble adhesive pili or pilus tips.
| PapC | HA titera– pili (papAHDJKEFG) | HA titera– tips (papDJKEFG) |
|---|---|---|
| vector | 0 | 0 |
| WT | 64 | 256 |
| F3A | 0 | 0 |
| C70A | 0 | 0 |
| Δ77–86 | 0 | 0 |
| FimD | HA titera– pili (fimAICFGH) | HA titera– tips (fimCGH) |
|---|---|---|
| vector | 0 | 0 |
| WT | 128 | 256 |
| F4A | 0 | 0 |
| C63A | 128 | 128 |
| Δ70–79 | 0 | 0 |
HA titer is the highest fold dilution of bacteria able to agglutinate human red blood cells.
