2IBX:
reference: Haemagglutinin mutations responsible for the binding of H5N1 influenza A viruses to human-type receptors., Yamada S, Suzuki Y, Suzuki T, Le MQ, Nidom CA, Sakai-Tagawa Y, Muramoto Y, Ito M, Kiso M, Horimoto T, Shinya K, Sawada T, Kiso M, Usui T, Murata T, Lin Y, Hay A, Haire LF, Stevens DJ, Russell RJ, Gamblin SJ, Skehel JJ, Kawaoka Y, Nature. 2006 Nov 16;444(7117):378-82. PMID: 17108965

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