Eriko Hamasaki, Natsuki Wakita, Hiroki Yasuoka, Hikaru Nagaoka, Masayuki Morita, Eizo Takashima, Takayuki Uchihashi, Tetsuya Takeda, Tadashi Abe, Ji-Won Lee, Tadahiro Iimura, Moin A Saleem, Naohisa Ogo, Akira Asai, Akihiro Narita, Kohji Takei, Hiroshi Yamada
Dynamin is an endocytic protein that functions in vesicle formation by scission of invaginated membranes. Dynamin maintains the structure of foot processes in glomerular podocytes by directly and indirectly interacting with actin filaments. However, molecular mechanisms underlying dynamin-mediated actin regulation are largely unknown. Here, biochemical and cell biological experiments were conducted to uncover how dynamin modulates interactions between membranes and actin in human podocytes. Actin-bundling, membrane tubulating, and GTPase activities of dynamin were examined in vitro using recombinant dynamin 2-wild-type (WT) or dynamin 2-K562E, which is a mutant found in Charcot-Marie-Tooth patients...
2022: Frontiers in Cell and Developmental Biology