Transporter Classification Database

IntroductionTransporter Classification Database
Classification 1. Channels and pores 1.A α-type channels 1.B. β-Barrel porins and other outer membrane proteins 1.C Pore-forming toxins (proteins and peptides)1.D Non-ribosomally synthesized channels 1.E Holins 1.F Vesicle fusion pores 1.G Viral fusion pores 1.H Paracellular channels 1.I Membrane-bound channels 2. Electrochemical potential-driven transporters 2.A Porters (uniporters, symporters, antiporters)2.B Nonribosomally synthesized porters 2.C Ion-gradient-driven energizers 3. Primary active transporters 3.A. P-P-bond hydrolysis-driven transporters 3.B Decarboxylation-driven transporters 3.C Methyltransfer-driven transporters 3.D. Oxidoreduction-driven transporters 3.E. Light absorption-driven transporters 4. Group translocators 4.A Phosphotransfer-driven group translocators 4.B Nicotinamide ribonucleoside uptake transporters 4.C Acyl CoA ligase-coupled transporters 4.D Polysaccharide Synthase/Exporters 4.E. Vacuolar Polyphosphate Polymerase-catalyzed Group Translocators 5. Transport electron carriers 5.A Transmembrane 2-electron transfer carriers 5.B Transmembrane 1-electron transfer carriers 8. Accessory factors involved in transport 8.A Auxiliary transport proteins 8.B Ribosomally synthesized protein/peptide toxins that target channels and carriers 8.C Non-ribosomally synthesized toxins that target channels and carriers 9. Incompletely characterized transport systems 9.A Recognized transporters of unknown biochemical mechanism 9.B Putative transport proteins 9.C Functionally characterized transporters lacking identified sequences
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