Diselenide-bond replacement of the external disulfide bond of insulin increases its oligomerization leading to sustained activity. - Arai, Kenta; Okumura, Masaki; Lee, Young-Ho; Katayama, Hidekazu; Mizutani, Kenji; Lin, Yuxi; Park, Sam-Yong; Sawada, Kaichiro; Toyoda, Masao; Hojo, Hironobu; Inaba, Kenji; Iwaoka, Michio (Communications Chemistry, 2023)