Nat. Protoc. 9, 2771–2783 (2014); doi:10.1038/nprot.2014.189; published online 6 November 2014; corrected online 21 November 2014

In the version of this article initially published online, the title was incorrect and was changed to read as follows: 'Antibody modeling using the Prediction of ImmunoGlobulin Structure (PIGS) web server'. The error has been corrected for the PDF and HTML versions of this article.