Fig. 6. Spatial interaction pattern between proteins from the NHEJ and the HRR pathway. The black arrows indicate the closest interaction, direct protein-protein interaction detected by Co-IP. The grey arrows mark close spatial (but not direct protein-protein) interaction detected by the FRET effect. The dotted lines indicate optical co-localisation, which means proximity in the range of less than 200 nm (but on the same individual DSB site).