Table 2 Events of gene losses in the P. furiosus, P. horikoshii and P. abyssi genomes
Functional group | Number of genes lost | Â | ||
|---|---|---|---|---|
|  | P. horiko-shii | P. abyssi | P. furiosus | p * (χ2) |
INFORMATION STORAGE AND PROCESSING | 9 | 2 | 10 | 0.066 |
Translation; ribosomal structure and biogenesis | 1 | 1 | 3 | 0.449 |
Transcription | 5 | 1 | 4 | 0.273 |
Replication; recombination and repair | 3 | 0 | 3 | 0.223 |
CELLULAR PROCESSES AND SIGNALING | 4 | 4 | 25 | 0.000002 |
Cell cycle control; cell division; chromosome partitioning | 1 | 0 | 0 | 0.368 |
Defense mechanisms | 1 | 1 | 5 | 0.102 |
Signal transduction mechanisms | 1 | 1 | 11 | 0.0004 |
Cell wall/membrane/envelope biogenesis | 1 | 0 | 4 | 0.074 |
Cell motility | 0 | 0 | 3 | 0.05 |
Intracellular trafficking; secretion; vesicular transport | 0 | 1 | 1 | 0.607 |
Posttranslational modification; protein turnover; chaperones | 0 | 1 | 1 | 0.607 |
METABOLISM | 34 | 9 | 21 | 0.0007 |
Energy production and conversion | 11 | 1 | 5 | 0.011 |
Carbohydrate transport and metabolism | 8 | 0 | 4 | 0.018 |
Amino acid transport and metabolism | 3 | 1 | 0 | 0.174 |
Nucleotide transport and metabolism | 5 | 2 | 4 | 0.529 |
Coenzyme transport and metabolism | 3 | 4 | 2 | 0.717 |
Lipid transport and metabolism | 3 | 0 | 0 | 0.05 |
Inorganic ion transport and metabolism | 1 | 1 | 5 | 0.102 |
Secondary metabolites biosynthesis; transport and catabolism | 0 | 0 | 1 | 0.368 |
FUNCTION UNKNOWN | 23 | 13 | 10 | 0.049 |