Movie S2.

Time-lapse AFM movie of nasal tetrameric IgA showing the large-scale conformational change of the extremity of each radial region. The frame rate is one frame per second.

Relationship of the quaternary structure of human secretory IgA to neutralization of influenza virus

Tadaki Suzuki, Akira Kawaguchi, Akira Ainai, Shin-ichi Tamura, Ryo Ito, Pretty Multihartina, Vivi Setiawaty, Krisna Nur Andriana Pangesti, Takato Odagiri, Masato Tashiro, and Hideki Hasegawa

PNAS. 2015. 112:7809-7814 DOI: 10.1073/pnas.1503885112