Correction to: Nature Published online 28 July 2021

In this Article, a citation to Witus et al.1 was inadvertently omitted, and has now been added as ref. 80 in the new sentence: “We note that the conformational flexibility of BRCA1R–BARD1R–UbcH5c–NCP highlighted in our work is consistent with a recent publication80, giving us confidence that the structures and interactions revealed in the two studies are relevant.”. The original Article has been corrected online.