GO:0042802	F	0.47	identical protein binding
GO:0004872	F	0.44	receptor activity
GO:0046983	F	0.36	protein dimerization activity
GO:0042803	F	0.35	protein homodimerization activity
GO:0004871	F	0.31	signal transducer activity
GO:0038023	F	0.30	signaling receptor activity
GO:0004888	F	0.29	transmembrane signaling receptor activity
GO:0005102	F	0.25	receptor binding
GO:0003824	F	0.22	catalytic activity
GO:0008046	F	0.19	axon guidance receptor activity
GO:0050839	F	0.18	cell adhesion molecule binding
GO:0003823	F	0.18	antigen binding
GO:0097159	F	0.17	organic cyclic compound binding
GO:1901363	F	0.16	heterocyclic compound binding
GO:0005198	F	0.16	structural molecule activity
GO:0043167	F	0.15	ion binding
GO:0046872	F	0.12	metal ion binding
GO:0016740	F	0.12	transferase activity
GO:0008092	F	0.11	cytoskeletal protein binding
GO:0004672	F	0.11	protein kinase activity
GO:0003676	F	0.11	nucleic acid binding
