Scientific Reports 5: Article number: 9803; published online: 05 May 2015; updated: 06 January 2016

This Article contains a typographical error in the Results section under subheading ‘Statistical analysis of the conformational flexibility of IgG1 antibody’.

“The Fab1-Fc-Fab2 angle distribution range was significantly wider than the angle measured from 5 cryo-ET 3D reconstructions of the IgG2a antibody28.”

should read:

“The Fab1-Fc-Fab2 angle distribution range was significantly wider than the angle measured from 5 cryo-ET 3D reconstructions of the IgG2a antibody6.”