Table 1.
Fimbrial and afimbrial adhesins of enterotoxigenic E. coli (ETEC) in animals.1
| Adhesin | Diameter, nm | Subunit size, kDa | Mannose sensitivity | Associated O-type | Receptor |
|---|---|---|---|---|---|
| F4 (K88) ab, ac, ad | 2.1 | 27.6 | MR2 | O8, O141, O149 | Sialo-glycoprotein |
| F5 (K99) | 5 | 16.5 | MR | O8, O20, O101 | Glycolipid (NeuGC-GM3) |
| F6 (987P) | 7 | 17.2 | MR-NH2 | O9, O20 | Glycoprotein/lipid (sulfatide) |
| F17 (Fy) | 3.4 | 20 | MR | O101 | Glycoprotein |
| F18ab, ac | 3.5 | 17 | MR-NH | O139, O141, O147, O157 | Glycoprotein |
| F41 | 3.2 | 29 | MR | O101 | Glycoprotein |
| F43 | 32 | MR | Glycoprotein | ||
| F165 | 4 to 6 | 17.5, 19 | MR | O115 | Glycoprotein |
| AIDA2 | NA | 100 | NA | O26 | Glycoprotein |
AIDA = adhesin-involved-in-diffuse-adherence.
1
Adopted from Nagy and Fekete (2005).
2
AIDA is an afimbrial adhesion.