Table 1

Biochemical conversions and transport processes, and number of ORFs associated with the metabolic reactions

Part of metabolism
Number of metabolic reactions
Number of previously annotated ORFsa
Number of newly annotated ORFs
Total number of ORFs

Biochemical reactions
1,095 (681b)
188
468
656
     C-compound metabolism
463 (220)
96
166
262
     Energy metabolism
20 (17)
14
40
54
     Aminoacid metabolism
238 (171)
40
125
165
     Nucleotide metabolism
144 (114)
10
44
54
     Lipid metabolism
175 (122)
13
97
110
     Secondary metabolism
42 (25)
16
14
30
     Nitrogen and sulphur metabolism
8 (7)
2
3
5
     Polymerization, assembly and maintenance
5 (5)




Transport processes
118 (113)
6
3
9

Total
1,213 (794)
194
472
666

Shown are the total number of biochemical conversions and transport processes included in the metabolic reconstruction for A. nidulans (number of unique reactions are given in parenthesis), and the number of ORFs (previously and newly annotated) associated with the metabolic reactions. The total number of unique ORFs in the metabolic network may be different from the sum of the number of ORFs in the different parts of the metabolism, because there are ORFs that encode functions in several parts of the metabolism. aAspergillus nidulans Database [9]. bSix nonenzymatic steps are included. ORF, open reading frame.

David et al. Genome Biology 2006 7:R108   doi:10.1186/gb-2006-7-11-r108