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Transporter Classification Database
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<p>The Transporter Classification Database (or TCDB) is an <a href="/facts/International_Union_of_Biochemistry_and_Molecular_Biology/6Tbm9SPF">International Union of Biochemistry and Molecular Biology</a> (IUBMB)-approved classification system for <a href="/facts/Membrane_transport_protein/h1aczVxg">membrane transport proteins</a>, including <a href="/facts/Ion_channel/A46LARFH">ion channels</a>. </p>