GO:0004872	F	0.66	receptor activity
GO:0004871	F	0.48	signal transducer activity
GO:0042802	F	0.47	identical protein binding
GO:0038023	F	0.47	signaling receptor activity
GO:0004888	F	0.46	transmembrane signaling receptor activity
GO:0042803	F	0.38	protein homodimerization activity
GO:0003824	F	0.26	catalytic activity
GO:0005102	F	0.22	receptor binding
GO:0050839	F	0.19	cell adhesion molecule binding
GO:0008046	F	0.18	axon guidance receptor activity
GO:0003823	F	0.18	antigen binding
GO:0097367	F	0.16	carbohydrate derivative binding
GO:0016740	F	0.13	transferase activity
GO:0005198	F	0.12	structural molecule activity
GO:0046872	F	0.11	metal ion binding
