MUS81 and Fanconi anemia: Moreover, the evidence of functional interactions with a myriad of DNA repair proteins such as MUS81, BLM, XPF-ERCC1, MSH2-MSH3, and the Fanconi anemia genes, along with its well established binding partner SLX1, show that BTBD12 may integrate with several DNA repair complexes to effect its HJ (and other) processing abilities [7], [8], [10], [29].