GO:0005515	protein binding	2006
GO:0043167	ion binding	1304
GO:0003676	nucleic acid binding	701
GO:0016740	transferase activity	570
GO:0016787	hydrolase activity	551
GO:0000166	nucleotide binding	461
GO:0030234	enzyme regulator activity	276
GO:0005215	transporter activity	221
GO:0008289	lipid binding	216
GO:0003682	chromatin binding	170
GO:0060090	molecular adaptor activity	148
GO:0060089	molecular transducer activity	146
GO:0005198	structural molecule activity	98
GO:0030246	carbohydrate binding	56
GO:0045182	translation regulator activity	31
GO:0016209	antioxidant activity	26
GO:0009055	electron transfer activity	11
GO:0019825	oxygen binding	3
