Table 2.

Clusters of structurally similar proteins.

Cluster	Size	Degrees	GO Terms enriched (Molecular Function, "MF")
Cluster 1	16	22-56	GO:0000739 DNA strand annealing activity
			GO:0003682 chromatin binding
			GO:0003746 translation elongation factor activity
			GO:0004145 diamine N-acetyltransferase activity
			GO:0004157 dihydropyrimidinase
			GO:0004864 protein phosphatase inhibitor activity
			GO:0016455 RNA polymerase II transcription mediator activity
			GO:0018024 histone-lysine N-methyltransferase activity
			GO:0050681 androgen receptor binding
Cluster 2	32	8-20	GO:0008270 zinc ion binding
Cluster 3	86	4-7	GO:0003899 DNA-directed RNA polymerase activity
			GO:0005125 cytokine activity
			GO:0019900 kinase binding
			GO:0042562 hormone binding
Cluster 4	131	2-3	GO:0003777 microtubule motor activity
			GO:0005088 Ras guanyl-nucleotide exchange factor activity
Cluster 5	136	1	GO:0003700 transcription factor activity
			GO:0003723 RNA binding
			GO:0003779 actin binding
			GO:0005198 structural molecule activity

Table 2 presents the groups of proteins obtained by clustering the respective sociality parameters. The number of proteins in each cluster, their degrees and molecular functions found by GO-significance analysis are displayed.