| Index | Ligand Name | Structure | PDB code | Compound Potency nM |
| 1 | upx | Crystal structure of checkpoint kinase 2 in complex with inhibitor PV1115 | 2ycq | 0.14 |
| 2 | yit | Structural analysis of checkpoint kinase 2 in complex with PV1162, a novel inhibitor | 2yit | 0.29 |
| 3 | nxp | Crystal structure of checkpoint kinase 2 in complex with PV788 | 2ycs | 1.36 |
| 4 | xbj | Crystal Structure of Chk2 in complex with an inhibitor | 2xbj | 3 |
| 5 | lwh | Structure of a small molecule inhibitor with the kinase domain of Chk2 | 2xm9 | 9 |
| 6 | a9u | CRYSTAL STRUCTURE OF HUMAN CHK2 IN COMPLEX WITH BENZIMIDAZOLE CARBOXAMIDE INHIBITOR | 4a9u | 60 |
| 7 | ru9 | CRYSTAL STRUCTURE OF HUMAN CHK2 IN COMPLEX WITH BENZIMIDAZOLE CARBOXAMIDE INHIBITOR | 4a9s | 61 |
| 8 | hcw | Crystal structure of checkpoint kinase 2 in complex with inhibitor PV976 | 2ycr | 69.6 |
| 9 | a9t | CRYSTAL STRUCTURE OF HUMAN CHK2 IN COMPLEX WITH BENZIMIDAZOLE CARBOXAMIDE INHIBITOR | 4a9t | 70 |
| 10 | wti | CRYSTAL STRUCTURE OF CHK2 IN COMPLEX WITH AN INHIBITOR | 2wti | 92 |
| 11 | vgm | CRYSTAL STRUCTURE OF CHK2 IN COMPLEX WITH AN INHIBITOR | 2wtc | 310 |
| 12 | wtj | CRYSTAL STRUCTURE OF CHK2 IN COMPLEX WITH AN INHIBITOR | 2wtj | 700 |
| 13 | odh | Fragment-based screening identifies a new area for inhibitor binding to checkpoint kinase 2 (CHK2) | 4bdc | 1.17e+004 |
| 14 | hau | Fragment-based screening identifies a new area for inhibitor binding to checkpoint kinase 2 (CHK2) | 4bdi | 2.277e+005 |