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. 2006 Jan;72(1):890–900. doi: 10.1128/AEM.72.1.890-900.2006

TABLE 2.

Percentages of genes that showed similar expression profiles for the different gene functional categories following cluster analysis

Functional category Clustera
Genomea
I II III
IV
A B C D E F
Amino acid biosynthesis 4.3 4.6 2.5 1.8 3.0 1.0 1.8
Biosynthesis of cofactors, prosthetic groups, and carriers 0.8 3.3 3.5 2.1 4.5 2.4
Cell envelope 5.9 7.1 4.3 2.3 2.9 3.1 2.1 4.0 3.5
Cellular processes 8.5 3.8 3.3 3.1 4.5 4.2 5.4
Central intermediary metabolism 1.5 2.9 0.4 0.6 1.3 1.2
DNA metabolism 3.1 2.0 2.2 2.7 2.2 2.9
Energy metabolism 21.4 2.1 4.8 4.5 4.8 5.9 15.4 6.1
Fatty acid and phospholipid metabolism 1.9 1.2 1.3 1.2 2.4 1.3
Hypothetical or conserved hypothetical 17.6 42.9 36.2 48.8 30.3 31.1 43.3 31.4 39.4
Mobile and extrachromosomal element functions 3.4 0.8 0.9 3.9 0.5 6.2
Protein fate 12.8 1.1 6.1 6.6 6.2 4.6 3.8
Protein synthesis 0.6 18.9 20.2 1.2 5.0 2.8
Purines, pyrimidines, nucleosides, and nucleotides 7.1 0.4 4.1 4.4 0.9 5.1 1.2
Regulatory functions 14.3 8.5 6.7 5.0 2.7 4.3
Signal transduction 0.0 1.9 1.6 1.8 0.9 1.1 1.8
Transcription 2.1 0.6 3.3 3.5 1.2 1.3 1.1
Transport and binding proteins 76.5 10.6 5.5 5.3 3.9 7.4 6.7 6.1
Unknown function 7.1 10.6 8.2 7.0 7.5 8.0 6.6 7.3
a

Some genes are assigned to more than one functional category. Letters beneath clusters III and IV indicate subgroups.