GO:0005102	F	0.43	receptor binding
GO:1901363	F	0.39	heterocyclic compound binding
GO:0097159	F	0.39	organic cyclic compound binding
GO:0005126	F	0.36	cytokine receptor binding
GO:0031730	F	0.35	CCR5 chemokine receptor binding
GO:0000166	F	0.32	nucleotide binding
GO:0032555	F	0.31	purine ribonucleotide binding
GO:0032550	F	0.31	purine ribonucleoside binding
GO:0035639	F	0.30	purine ribonucleoside triphosphate binding
GO:0032561	F	0.27	guanyl ribonucleotide binding
GO:0005525	F	0.26	GTP binding
GO:0098772	F	0.21	molecular function regulator
GO:0016247	F	0.20	channel regulator activity
GO:0003824	F	0.16	catalytic activity
