Table 2.

A summary of protein interaction and GO annotation data used in the external validation of the hub classifiers.

External validation set	MRSA252	C. elegans
# of proteins	133	2890
# of hubs (10% of total proteins)	13	276
# of non-hubs (90% of total proteins)	120	2614
# of protein interactions	2401	4594
minimum # of interactions per hub	45	7
# of proteins with at least one GO term	109	2403
# of proteins without any GO term	24	487
% of proteins with at least one GO term	81.95%	83.15%
# of different GO terms – process	27	46
# of different GO terms – function	19	34
# of different GO terms – component	5	22
# of different GO terms – total	51	102

The top table lists the protein interactions and hubs in each of the two species, and the bottom part of the table lists the number of unique GO terms for each annotation category.