Q9BXW9 

FANCD2 is part of the Fanconi anemia (FA) pathway, a critical cellular mechanism that maintains genomic integrity. FANCD2 plays a crucial role in the DNA damage response, particularly in the repair of interstrand cross-links, which are a type of DNA damage that can lead to genomic instability and cancer if not properly repaired. When DNA is damaged, FANCD2 undergoes monoubiquitination, which is essential for activation and subsequent localization to sites of DNA damage, where FANCD2 interacts with other FA proteins and the breast cancer susceptibility protein BRCA1. This interaction is vital for the recruitment of repair factors to the damaged DNA, thereby facilitating effective repair processes.