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Table 2 Redundancy of PPIs.

From: Protein-protein interaction databases: keeping up with growing interactomes

Species

Proteins

Interactions

>1 publication

>1 method

>1 database

C. elegans

3,173

5,300

668 (13%)

155 (3%)

4,536 (86%)

D. melanogaster

7,529

24,811

198 (1%)

298 (1%)

17,904 (72%)

H. sapiens

10,397

51,308

9,358 (18%)

21,036 (41%)

26,263 (51%)

S. cerevisiae

5,806

69,059

12,037 (17%)

17,219 (25%)

29,053 (42%)

  1. The total number of proteins and interactions (that could be mapped to Ensembl gene identifiers), as well as the number of interactions reported by more than one publication, more than one method or more than one database, is shown. Relative numbers were obtained through normalisation with the total number of interactions.