Largest 30 Multigene Families
| Name | Size |
| ABC transporter ATP-binding protein | 85 |
| Surface protein | 62 |
| Sensory transduction histidine kinase | 49 |
| Methyltransferase | 46 |
| Predicted protein | 29 |
| Oligopeptide ABC transporter (permease) | 28 |
| Conserved hypothetical protein | 25 |
| Transposase (Archaeoglobus fulgidusIS0963 family) | 21 |
| Iron ABC transporter, solute-binding protein | 21 |
| Transposase | 20 |
| Oligopeptide ABC transporter, solute-binding protein | 19 |
| Iron-sulfure flavoprotein | 19 |
| Transposase (Bacillus atoarothermophilus ORF A family) | 18 |
| IstB-like ATP-binding protein | 18 |
| Conserved hypothetical protein | 16 |
| Conserved hypothetical protein | 15 |
| Conserved hypothetical protein | 15 |
| MFS transporter family protein | 14 |
| Polysaccharide biosynthesis protein/LPS biosynthesis protein/sugar transferase | 14 |
| Predicted protein | 14 |
| ABC transporter, permease protein | 13 |
| Fe (III) ABC transporter, permease protein | 13 |
| Nitrogenase, subunit | 13 |
| Transposase | 13 |
| Methylamine corrinoid protein | 12 |
| Metallo cofactor biosynthesis protein family | 12 |
| O-linked GlcNAc transferase | 11 |
| Response regulator | 11 |
| Sulfate/molybdate/phosphate ABC transporter, permease protein | 11 |
| Transcription repressor; MarR family protein | 10 |