An insertion mutation that distorts antibody binding site architecture enhances function of a human antibody.
Krause, J.C., Ekiert, D.C., Tumpey, T.M., Smith, P.B., Wilson, I.A., Crowe, J.E.(2011) mBio 2: e00345-e00310
- PubMed: 21304166 
- DOI: 10.1128/mBio.00345-10
- Primary Citation of Related Structures:  
3QHF, 3QHZ - PubMed Abstract: 
The structural and functional significance of somatic insertions and deletions in antibody chains is unclear. Here, we demonstrate that a naturally occurring three-amino-acid insertion within the influenza virus-specific human monoclonal antibody 2D1 heavy-chain variable region reconfigures the antibody-combining site and contributes to its high potency against the 1918 and 2009 pandemic H1N1 influenza viruses ...