A single sequence change destabilizes the influenza virus neuraminidase tetramer: J. M. Colacino1, E. Garman2, N. Y. Chirgadze1, K. A. Staschke1, K. G. Murti3, G. Taylor4, G. Air5 and W. G. Laver6. 1Lilly Res. Labs., Indianapolis, USA; 2Oxford Univ., UK; 3St. Jude Children's Res. Hosp., Memphis USA; 4Univ. of Bath, UK; 5Univ. of Okla. Health Sci. Ctr., Oklahoma City, USA; 6The John Curtin Sch. of Med. Res., Canberra, Australia