| Index | Ligand Name | Structure | PDB code | Compound Potency nM |
| 1 | qig | ALK-5 kinase complex with GW857175 | 3gxl | 25 |
| 2 | 855 | Structure of Alk5 + GW855857 | 3hmm | 25 |
| 3 | jzo | Crystal structure of TGFbRI complexed with a pyrazolone inhibitor | 3kcf | 35 |
| 4 | zzg | ALK5 IN COMPLEX WITH 4-((5,6-dimethyl-2-(2-pyridyl)-3-pyridyl)oxy)-N-(3,4,5-trimethoxyphenyl)pyridin-2-amine | 2wot | 44 |
| 5 | 8ly | ALK-5 kinase inhibitor complex | 5usq | 100 |
| 6 | 580 | Crystal Structure of TGF-beta receptor I kinase with ATP site inhibitor | 1rw8 | 175 |
| 7 | 5l4 | TGF-BETA RECEPTOR TYPE 1 KINASE DOMAIN (T204D) IN COMPLEX WITH 3-AMINO-6-[4-(2-HYDROXYETHYL)PHENYL]-N-[4-(MORPHOLIN-4-YL)PYRIDIN-3-YL]PYRAZINE-2-CARBOXAMIDE | 5e8z | 1243 |