Table 1.
Annotation of horizontally acquired genes
| Context | NEIS no. | Gene | Product |
| Capsule | NEIS0049 | ctrG | Unknown |
| NEIS0050 | cssE | O-acetyl transferase | |
| NEIS0051 | csc | Polysialyltransferase | |
| NEIS0052 | cssC | N-acetylneuraminic acid synthetase | |
| NEIS0053 | cssB | CMP-N-acetylneuraminic acid synthase | |
| NEIS0054 | cssA | N-acetylglucosamine-6-P 2-epimerase | |
| NEIS0055 | ctrA | Capsule polysaccharide export outer membrane protein | |
| NEIS0056 | ctrB | Capsule polysaccharide export inner membrane protein | |
| NEIS0057 | ctrC | Capsule polysaccharide export inner membrane protein | |
| NEIS0058 | ctrD | Capsule polysaccharide export ATP-binding protein | |
| NEIS0059 | N/A | Putative transcriptional accessory protein | |
| Phage | NEIS2451 | orf10 | Hypothetical protein |
| NEIS0031 | orf1 | Putative phage replication initiation factor | |
| NEIS0030 | orf2 | Conserved hypothetical protein | |
| NEIS0029 | orf3 | Hypothetical protein | |
| NEIS0028 | orf4 | Major capsid protein | |
| NEIS0027 | orf5 | Hypothetical integral membrane protein | |
| NEIS1866 | orf6 | T- and B-cell stimulating protein B (tspB) | |
| NEIS2987 | orf7 | Hypothetical integral membrane protein | |
| NEIS0024 | orf8 | Conserved hypothetical integral membrane protein | |
| NEIS0023 | orf9 | Zonular occludens toxin-like protein / transposase |
N/A, not applicable.