| signaling receptor activity | GO:0038023 | 2.49 |
| activin-activated receptor activity | GO:0017002 | 7.79 |
| molecular transducer activity | GO:0060089 | 2.32 |
| nodal binding | GO:0038100 | 9.05 |
| binding | GO:0005488 | 0.18 |
| signal transducer activity | GO:0004871 | 2.28 |
| ion binding | GO:0043167 | 1.36 |
| heterocyclic compound binding | GO:1901363 | 1.06 |
| nucleoside phosphate binding | GO:1901265 | 1.96 |
| nucleoside binding | GO:0001882 | 2.21 |
| cation binding | GO:0043169 | 1.4 |
| receptor signaling protein activity | GO:0005057 | 4.76 |
| growth factor binding | GO:0019838 | 4.89 |
| purine ribonucleoside triphosphate binding | GO:0035639 | 2.22 |
| nucleotide binding | GO:0000166 | 1.96 |
| transmembrane receptor protein serine/threonine kinase activity | GO:0004675 | 6.91 |
| protein serine/threonine kinase activity | GO:0004674 | 3.64 |
| transferase activity | GO:0016740 | 1.95 |
| purine nucleoside binding | GO:0001883 | 2.22 |
| protein kinase activity | GO:0004672 | 3.27 |
| purine nucleotide binding | GO:0017076 | 2.19 |
| metal ion binding | GO:0046872 | 1.41 |
| ATP binding | GO:0005524 | 2.43 |
| kinase activity | GO:0016301 | 2.93 |
| ribonucleoside binding | GO:0032549 | 2.22 |
| small molecule binding | GO:0036094 | 1.89 |
| catalytic activity | GO:0003824 | 1.05 |
| GO:0016361 | 8.35 |
| adenyl nucleotide binding | GO:0030554 | 2.4 |
| carbohydrate derivative binding | GO:0097367 | 2.03 |
| organic cyclic compound binding | GO:0097159 | 1.05 |
| transferase activity, transferring phosphorus-containing groups | GO:0016772 | 2.77 |
| phosphotransferase activity, alcohol group as acceptor | GO:0016773 | 3.08 |
| transmembrane signaling receptor activity | GO:0004888 | 2.57 |
| adenyl ribonucleotide binding | GO:0032559 | 2.41 |
| transmembrane receptor activity | GO:0099600 | 2.53 |
| protein binding | GO:0005515 | 0.46 |
| receptor signaling protein serine/threonine kinase activity | GO:0004702 | 5.23 |
| purine ribonucleotide binding | GO:0032555 | 2.2 |
| transmembrane receptor protein kinase activity | GO:0019199 | 5.32 |
| purine ribonucleoside binding | GO:0032550 | 2.22 |
| ribonucleotide binding | GO:0032553 | 2.19 |
| receptor activity | GO:0004872 | 2.32 |