Pterin-based small molecule inhibitor capable of binding to the secondary pocket in the active site of ricin-toxin A chain. - Saito, Ryota; Goto, Masaru; Katakura, Shun; Ohba, Taro; Kawata, Rena; Nagatsu, Kazuki; Higashi, Shoko; Kurisu, Kaede; Matsumoto, Kaori; Ohtsuka, Kouta (PLoS ONE, 2022)