GO:0004872	F	0.93	receptor activity
GO:0099600	F	0.92	transmembrane receptor activity
GO:0005215	F	0.81	transporter activity
GO:0015075	F	0.80	ion transmembrane transporter activity
GO:0005216	F	0.79	ion channel activity
GO:0004888	F	0.74	transmembrane signaling receptor activity
GO:0015103	F	0.61	inorganic anion transmembrane transporter activity
GO:0005254	F	0.60	chloride channel activity
GO:0022836	F	0.56	gated channel activity
GO:0015276	F	0.52	ligand-gated ion channel activity
GO:0005230	F	0.51	extracellular ligand-gated ion channel activity
GO:0005231	F	0.48	excitatory extracellular ligand-gated ion channel activity
GO:0043167	F	0.45	ion binding
GO:0004890	F	0.44	GABA-A receptor activity
GO:0030594	F	0.33	neurotransmitter receptor activity
GO:0043169	F	0.32	cation binding
GO:0008324	F	0.30	cation transmembrane transporter activity
GO:0004889	F	0.29	acetylcholine-activated cation-selective channel activity
GO:0015464	F	0.28	acetylcholine receptor activity
GO:0042166	F	0.27	acetylcholine binding
GO:0031406	F	0.15	carboxylic acid binding
GO:0016594	F	0.14	glycine binding
GO:0016933	F	0.12	extracellular-glycine-gated ion channel activity
GO:0005237	F	0.12	inhibitory extracellular ligand-gated ion channel activity
GO:0016934	F	0.11	extracellular-glycine-gated chloride channel activity
