Table 1. Overall number of microbial proteins identified in symptomatic and asymptomatic (initial) endodontic infections.
| Protein (functional class) | Abscess cases | Asymptomatic cases |
| Transcription and translation | 30 | 16 |
| Cell division/peptidoglycan synthesis | 4 | 6 |
| Chemotaxis | 1 | 1 |
| DNA process | 18 | 10 |
| Energy metabolism | 21 | 9 |
| Fatty acid metabolism | 5 | 1 |
| Methanogenesis | 0 | 1 |
| Membrane | 10 | 1 |
| Nucleotide metabolism | 8 | 3 |
| Antibiotic resistance | 0 | 2 |
| Adhesion | 1 | 1 |
| Pathogenesis/virulence | 1 | 1 |
| Proteolysis | 6 | 1 |
| Stress response | 3 | 6 |
| Transport | 9 | 5 |
| Vitamin Biosynthesis | 3 | 0 |
| Other/unknown | 53 | 24 |
| Total | 173 | 88 |