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Kagawa, Todd F., Jakki C. Cooney, Heather M. Baker, Sean McSweeney, Mengyao Liu, Siddeswar Gubba, James M. Musser, ja Edward N. Baker. Crystal Structure of the Zymogen Form of the Group A Streptococcus Virulence Factor SpeB: An Integrin-binding Cysteine Protease. The National Academy of Sciences, 2000.

Kagawa, Todd F., et al. Crystal Structure of the Zymogen Form of the Group A Streptococcus Virulence Factor SpeB: An Integrin-binding Cysteine Protease. The National Academy of Sciences, 2000.