Addendum to: Nature Methods 15, 127–133 (2018) https://doi.org/10.1038/nmeth.4533, published online 18 December 2017

In the version of this article initially published, the introduction focused on methods for characterizing the nuclear envelope and did not include a comprehensive overview of proximity-based methods, some of which have similarly utilized antibody-conjugated peroxidase for proximity labeling by biotin deposition (refs 1,2,3,4 below). The authors believe they should have included these references and apologize for the omission.