Correction: Pterin-based small molecule inhibitor capable of binding to the secondary pocket in the active site of ricin-toxin A chain

• Ryota Saito, 
• Masaru Goto, 
• Shun Katakura, 
• Taro Ohba, 
• Rena Kawata, 
• Kazuki Nagatsu, 
• Shoko Higashi, 
• Kaede Kurisu, 
• Kaori Matsumoto, 
• Kouta Ohtsuka