TABLE 2.
COG classifications of the genes in the Nitrosospira multiformis genome (IMG version 2.4, 2007)
| Protein category based on COGs | No. of genes with COG (% in COG category)a |
|---|---|
| Any COG category | 2,102 (73.1) |
| Cell wall, membrane, and envelope | 194 (6.8) |
| DNA replication and repair | 182 (6.3) |
| Energy production and conversion | 160 (5.6) |
| Amino acid transport and metabolism | 154 (5.4) |
| Translation, ribosome structure, and biogenesis | 151 (5.3) |
| Posttranslation modification and chaperones | 129 (4.5) |
| Signal transduction mechanisms | 124 (4.3) |
| Coenzyme transport and metabolism | 108 (3.8) |
| Inorganic ion transport and metabolism | 105 (3.7) |
| Transcription | 99 (3.4) |
| Intracellular traffic and secretion | 96 (3.3) |
| Carbohydrate transport and metabolism | 94 (3.3) |
| Lipid metabolism | 77 (2.7) |
| Cell motility | 64 (2.2) |
| Secondary metabolites | 59 (2.0) |
| Nucleotide transport and metabolism | 54 (1.9) |
| Defense | 31 (1.1) |
| General function prediction only | 227 (7.9) |
| Unknown function | 197 (6.8) |
a
Classifications of genes are based on clusters of orthologous genes (COGs). The percentage given is based on a total gene count of 2,876. Some genes may be counted in more than one COG.