GO:0015075	F	1.00	ion transmembrane transporter activity
GO:0015385	F	0.99	sodium:proton antiporter activity
GO:0015079	F	0.60	potassium ion transmembrane transporter activity
GO:0015386	F	0.58	potassium:proton antiporter activity
GO:0048306	F	0.26	calcium-dependent protein binding
GO:0097159	F	0.19	organic cyclic compound binding
GO:1901363	F	0.18	heterocyclic compound binding
GO:0036094	F	0.16	small molecule binding
GO:0032555	F	0.14	purine ribonucleotide binding
GO:0032550	F	0.14	purine ribonucleoside binding
GO:0003824	F	0.14	catalytic activity
GO:0035639	F	0.13	purine ribonucleoside triphosphate binding
GO:0030554	F	0.12	adenyl nucleotide binding
GO:0019899	F	0.11	enzyme binding
GO:0005524	F	0.11	ATP binding
