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The Transporter Classification Database (TCDB): recent advances. - Milton H. Saier Jr.; Vamsee S. Reddy; Brian V. Tsu; Muhammad Saad Ahmed; Chun Li; Gabriel Moreno-Hagelsieb (Nucleic Acids Res., 2016)

The Transporter Classification Database (TCDB): 2021 update. - Milton H. Saier Jr.; Vamsee S. Reddy; Gabriel Moreno-Hagelsieb; Kevin J. Hendargo; Yichi Zhang; Vasu Iddamsetty; Katie Jing Kay Lam; Nuo Tian; Steven Russum; Jianing Wang; Arturo Medrano-Soto (Nucleic Acids Res., 2021)