| ATM | ataxia-telangiectasia mutated kinase |
| CD | circular dichroism |
| CI | competitivity index |
| EXAFS | extended X-ray absorption fine structure |
| HsHk | zinc hook from H. sapiens Rad50 |
| MRN | Mre11, Rad50, Nbs1 complex |
| NHEJ | non-homologous end joining |
| PDB | Protein Data Bank |
| PfHk | zinc hook from P. furiosus Rad50 |
| SAXS | Small angle X-ray scattering |
| XANES | X-ray absorption near-edge structure |