GO:0016740	F	0.94	transferase activity
GO:0004672	F	0.93	protein kinase activity
GO:0004674	F	0.84	protein serine/threonine kinase activity
GO:0004871	F	0.82	signal transducer activity
GO:0004888	F	0.78	transmembrane signaling receptor activity
GO:0004675	F	0.77	transmembrane receptor protein serine/threonine kinase activity
GO:0005024	F	0.66	transforming growth factor beta-activated receptor activity
GO:0019838	F	0.63	growth factor binding
GO:0005025	F	0.63	transforming growth factor beta receptor activity, type I
GO:0050431	F	0.59	transforming growth factor beta binding
GO:0005057	F	0.58	receptor signaling protein activity
GO:0097159	F	0.33	organic cyclic compound binding
GO:1901363	F	0.32	heterocyclic compound binding
GO:0097367	F	0.30	carbohydrate derivative binding
GO:0000166	F	0.26	nucleotide binding
GO:0035639	F	0.25	purine ribonucleoside triphosphate binding
GO:0032555	F	0.25	purine ribonucleotide binding
GO:0032550	F	0.25	purine ribonucleoside binding
GO:0005524	F	0.23	ATP binding
GO:0005102	F	0.21	receptor binding
GO:0044877	F	0.16	macromolecular complex binding
GO:0032403	F	0.14	protein complex binding
GO:0017002	F	0.13	activin-activated receptor activity
GO:0048185	F	0.12	activin binding
GO:0046332	F	0.12	SMAD binding
GO:0046872	F	0.11	metal ion binding
GO:0016361	F	0.11	activin receptor activity, type I
