GO:0005262	F	0.87	calcium channel activity
GO:0097159	F	0.43	organic cyclic compound binding
GO:1901363	F	0.41	heterocyclic compound binding
GO:0036094	F	0.32	small molecule binding
GO:0000166	F	0.31	nucleotide binding
GO:0098772	F	0.29	molecular function regulator
GO:0017112	F	0.28	Rab guanyl-nucleotide exchange factor activity
GO:0032555	F	0.27	purine ribonucleotide binding
GO:0032550	F	0.27	purine ribonucleoside binding
GO:0035639	F	0.26	purine ribonucleoside triphosphate binding
GO:0032561	F	0.19	guanyl ribonucleotide binding
GO:0005525	F	0.17	GTP binding
GO:0046872	F	0.14	metal ion binding
GO:0003824	F	0.12	catalytic activity
