GO:0003823	F	0.92	antigen binding
GO:0042277	F	0.47	peptide binding
GO:0042605	F	0.40	peptide antigen binding
GO:0005102	F	0.29	receptor binding
GO:0004872	F	0.21	receptor activity
GO:0004871	F	0.17	signal transducer activity
GO:0038023	F	0.16	signaling receptor activity
GO:0030881	F	0.16	beta-2-microglobulin binding
GO:1901363	F	0.15	heterocyclic compound binding
GO:0097159	F	0.15	organic cyclic compound binding
GO:0044877	F	0.14	macromolecular complex binding
GO:0004888	F	0.14	transmembrane signaling receptor activity
GO:0043167	F	0.13	ion binding
GO:0032403	F	0.13	protein complex binding
GO:0046872	F	0.12	metal ion binding
GO:0003824	F	0.12	catalytic activity
GO:0003676	F	0.11	nucleic acid binding
