Nat. Struct. Mol. Biol. https://doi.org/10.1038/s41594-018-0027-7; published online 07 February 2018

In the version of this article initially published online, an incorrect accession code, EMD-5NW4, was introduced on page 1 of the article PDF, in section ‘BICD2N mediates the association of two dynein dimers with a single dynactin’. This has been corrected to PDB 5NW4. The error has been corrected in the PDF and HTML versions of this article.