GO:0022836	F	1.00	gated channel activity
GO:0005261	F	1.00	cation channel activity
GO:0046873	F	0.99	metal ion transmembrane transporter activity
GO:0022843	F	0.99	voltage-gated cation channel activity
GO:0015077	F	0.99	monovalent inorganic cation transmembrane transporter activity
GO:0005249	F	0.98	voltage-gated potassium channel activity
GO:0099600	F	0.28	transmembrane receptor activity
GO:0015276	F	0.26	ligand-gated ion channel activity
GO:0097159	F	0.21	organic cyclic compound binding
GO:1901363	F	0.20	heterocyclic compound binding
GO:0036094	F	0.20	small molecule binding
GO:0000166	F	0.19	nucleotide binding
GO:0032555	F	0.18	purine ribonucleotide binding
GO:0005221	F	0.18	intracellular cyclic nucleotide activated cation channel activity
GO:0005222	F	0.17	intracellular cAMP activated cation channel activity
GO:0030551	F	0.14	cyclic nucleotide binding
GO:0032561	F	0.12	guanyl ribonucleotide binding
GO:0005251	F	0.12	delayed rectifier potassium channel activity
GO:0030553	F	0.11	cGMP binding
GO:0005223	F	0.11	intracellular cGMP activated cation channel activity
