GO:0022836	F	1.00	gated channel activity
GO:0005216	F	1.00	ion channel activity
GO:0005261	F	0.99	cation channel activity
GO:0005249	F	0.96	voltage-gated potassium channel activity
GO:0004872	F	0.49	receptor activity
GO:0099600	F	0.48	transmembrane receptor activity
GO:0036094	F	0.48	small molecule binding
GO:0097159	F	0.47	organic cyclic compound binding
GO:0000166	F	0.46	nucleotide binding
GO:0032555	F	0.45	purine ribonucleotide binding
GO:0015276	F	0.42	ligand-gated ion channel activity
GO:0005221	F	0.40	intracellular cyclic nucleotide activated cation channel activity
GO:0032561	F	0.38	guanyl ribonucleotide binding
GO:0030551	F	0.38	cyclic nucleotide binding
GO:0030553	F	0.36	cGMP binding
GO:0005223	F	0.36	intracellular cGMP activated cation channel activity
GO:0005222	F	0.36	intracellular cAMP activated cation channel activity
GO:0004871	F	0.15	signal transducer activity
GO:0003824	F	0.14	catalytic activity
GO:0038023	F	0.12	signaling receptor activity
GO:0046872	F	0.11	metal ion binding
GO:0035639	F	0.11	purine ribonucleoside triphosphate binding
GO:0032550	F	0.11	purine ribonucleoside binding
GO:0004888	F	0.11	transmembrane signaling receptor activity
