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Transporter Classification Database (TCDB)

Published by National Institutes of Health (NIH) | U.S. Department of Health & Human Services | Catalog Last Checked: August 09, 2025 at 05:45 AM | Dataset Last Updated: July 25, 2023
The Transporter Classification Database details a comprehensive classification system for membrane transport proteins known as the Transporter Classification (TC) system. The TC system is analogous to the Enzyme Commission (EC) system for classification of enzymes, except that it incorporates both functional and phylogenetic information. Descriptions, TC numbers, and examples of over 600 families of transport proteins are provided.

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