pH-triggered, activated-state conformations of the influenza hemagglutinin fusion peptide revealed by NMR.
Lorieau, J.L., Louis, J.M., Schwieters, C.D., Bax, A.(2012) Proc Natl Acad Sci U S A 109: 19994-19999
- PubMed: 23169643 
- DOI: 10.1073/pnas.1213801109
- Primary Citation of Related Structures:  
2LWA - PubMed Abstract: 
The highly conserved first 23 residues of the influenza hemagglutinin HA2 subunit constitute the fusion domain, which plays a pivotal role in fusing viral and host-cell membranes. At neutral pH, this peptide adopts a tight helical hairpin wedge structure, stabilized by aliphatic hydrogen bonding and charge-dipole interactions ...