TABLE 2.
Overall cell surface properties of E. coli strains
| Strain | Relevant genotype | Cell surface hydrophobicity (mean ± SD) (%)a | Zeta potential (mV) |
|---|---|---|---|
| PC31 | Wild type | 3.5 ± 0.8b | −30.0 ± 5.3b |
| KO3 | ΔompX::cam | 5.6 ± 0.4 | −38.6 ± 5.3 |
| MS7 | fim::kan | 1.2 ± 0.5b | −33.3 ± 3.6b |
| KO6 | ΔompX::cam fim::kan | 3.1 ± 0.2 | −37.0 ± 2.8 |
a
The values are the percentages of cells in a population with three or more attached hydrophobic microspheres. Adsorption of a high number of microspheres per cell is related to a high level of cell surface hydrophobicity, as determined by microsphere adhesion to cells.
b
Data from reference 30.