FANCM (blue) with the help of MHF1/2 (dark grey) and FAAP24 (light grey) recruit a large multi-subunit ubiquitin E3 ligase, termed the FA core complex (blue), to sites of DNA damage. The core complex then mono-ubiquitinates FANCD2 and FANCI, mono-ubiquitinated FANCD2-FANCI (green) are recruited to sites of damage by FANCJ (yellow) and BRCA1 (yellow). These FA proteins colocalize with downstream FA proteins (RAD51, FANCN, FANCD1/BRCA2) (yellow), and facilitate DNA interstrand cross-link repair.