| cytokine receptor binding | GO:0005126 | 4.14 |
| cytokine activity | GO:0005125 | 4.34 |
| receptor serine/threonine kinase binding | GO:0033612 | 7.03 |
| phosphatase regulator activity | GO:0019208 | 5.26 |
| binding | GO:0005488 | 0.18 |
| molecular function regulator | GO:0098772 | 2.51 |
| oxidoreductase activity | GO:0016491 | 3.12 |
| growth factor activity | GO:0008083 | 4.66 |
| BMP receptor binding | GO:0070700 | 7.54 |
| transforming growth factor beta receptor binding | GO:0005160 | 5.81 |
| phosphatase activator activity | GO:0019211 | 7.54 |
| enzyme regulator activity | GO:0030234 | 2.85 |
| SMAD binding | GO:0046332 | 5.45 |
| catalytic activity | GO:0003824 | 1.05 |
| receptor binding | GO:0005102 | 2.43 |
| oxidoreductase activity, acting on CH-OH group of donors | GO:0016614 | 4.83 |
| oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor | GO:0016616 | 5.0 |
| co-receptor binding | GO:0039706 | 7.54 |
| protein binding | GO:0005515 | 0.46 |
| protein dimerization activity | GO:0046983 | 2.72 |
| protein heterodimerization activity | GO:0046982 | 3.64 |
| retinol dehydrogenase activity | GO:0004745 | 6.85 |
| transmembrane receptor protein serine/threonine kinase binding | GO:0070696 | 7.1 |
| enzyme activator activity | GO:0008047 | 3.56 |