Table 2.

Annotation statistics and information content (IC) of opérons in our operon database. GO terms in MFO category are more likely to be transferred when using sequence homology for annotation transfer.

Annotation statistic	BPO	MFO	CCO
# of annotated operons	268,773	311,424	268,359
Range of # of GO terms	[1, 41]	[1, 17]	[1, 20]
Average # of GO terms per gene in an annotated operon	0.556	0.543	0.456
Average IC of GO terms in an annotated operon	10.73	8.786	6.022
Average IC of GO terms per gone in an annotated operon	3.345	2.711	1.762
Total # of GO terms in the SwissProt database	16281	6308	2565