Table 2.
Divergence in Restriction/Modification Systems in Campylobacter jejuni Strains
| Gene | Function | Clone content (%) | Phase variable | 81116 | 81-176 | X | G1 | P1 | P2 | P3 | P4 | PHLS 01 | PHLS 02 | PHLS 03 |
| Cj0031 | type IIS restriction/ modification enzyme, N-terminal half | Cj0031 (31) | √ | + | + | + | + | + | + | + | + | + | + | + |
| Cj0032 | type IIS restriction/ modification enzyme, C-terminal half | Cj0031 (8) Cj0032 (95) | √ | − | + | − | + | − | + | (+) | − | + | + | (+) |
| Cj0208 | DNA modification methylase | Cj0207 (1) Cj0208(66) | + | + | + | + | + | + | + | + | + | + | + | |
| Cj0690 | possible restriction/ modification enzyme | Cj0690 (34) | − | + | + | + | + | (+) | + | + | + | + | + | |
| Cj0722 | DNA methylase | Cj0721 (16) Cj0722 (100) Cj0723 (32) | + | + | + | + | + | (+) | + | + | (+) | + | + | |
| Cj1051 | restriction/modification enzyme | Cj1051 (25) | + | − | + | + | + | − | − | + | + | + | (+) | |
| Cj1549 | type I restriction enzyme R protein | Cj1549(27) | − | + | + | + | + | + | + | − | + | + | + | |
| Cj1551 | type I restriction enzyme S protein | Cj1551 (56) | − | + | + | + | + | + | + | − | + | + | + | |
| Cj1553 | type I restriction enzyme M protein | Cj1553 (39) | + | + | + | + | + | + | + | − | + | + | + |
-
A + or − indicates that the red/green hybridization signal intensity ratio is >0.5 or <0.5. respectively.
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(+) Indicates the possibility that the gene may be absent or highly divergent even though the red/green hybridization signal intensity ratio is > 0.5 (see Methods).
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↵Putative gene function based on annotation (Parkhill et al. 2000).
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↵Genes contain intragenic homopolymeric tracts indicating potential phase variable expression (Parkhill et al. 2000).
