Transporter Classification Database

Short description: Classification of membrane proteins including ion channels

The Transporter Classification Database (or TCDB) is an International Union of Biochemistry and Molecular Biology (IUBMB)-approved classification system for membrane transport proteins, including ion channels.[1][2][3]

## Contents

* 1 Classification
* 1.1 1\. Channels and pores
* 1.1.1 1.A α-type channels
* 1.1.2 1.B. β-Barrel porins and other outer membrane proteins
* 1.1.3 1.C Pore-forming toxins (proteins and peptides)
* 1.1.4 1.D Non-ribosomally synthesized channels
* 1.1.5 1.E Holins
* 1.1.6 1.F Vesicle fusion pores
* 1.1.7 1.G Viral fusion pores
* 1.1.8 1.H Paracellular channels
* 1.1.9 1.I Membrane-bound channels
* 1.2 2\. Electrochemical potential-driven transporters
* 1.2.1 2.A Porters (uniporters, symporters, antiporters)
* 1.2.2 2.B Nonribosomally synthesized porters
* 1.2.3 2.C Ion-gradient-driven energizers
* 1.3 3\. Primary active transporters
* 1.3.1 3.A. P-P-bond hydrolysis-driven transporters
* 1.3.2 3.B Decarboxylation-driven transporters
* 1.3.3 3.C Methyltransfer-driven transporters
* 1.3.4 3.D. Oxidoreduction-driven transporters
* 1.3.5 3.E. Light absorption-driven transporters
* 1.4 4\. Group translocators
* 1.4.1 4.A Phosphotransfer-driven group translocators
* 1.4.2 4.B Nicotinamide ribonucleoside uptake transporters
* 1.4.3 4.C Acyl CoA ligase-coupled transporters
* 1.4.4 4.D Polysaccharide Synthase/Exporters
* 1.4.5 4.E. Vacuolar Polyphosphate Polymerase-catalyzed Group Translocators
* 1.5 5\. Transport electron carriers
* 1.5.1 5.A Transmembrane 2-electron transfer carriers
* 1.5.2 5.B Transmembrane 1-electron transfer carriers
* 1.6 8\. Accessory factors involved in transport
* 1.6.1 8.A Auxiliary transport proteins
* 1.6.2 8.B Ribosomally synthesized protein/peptide toxins that target channels and carriers
* 1.6.3 8.C Non-ribosomally synthesized toxins that target channels and carriers
* 1.7 9\. Incompletely characterized transport systems
* 1.7.1 9.A Recognized transporters of unknown biochemical mechanism
* 1.7.2 9.B Putative transport proteins
* 1.7.3 9.C Functionally characterized transporters lacking identified sequences
* 2 References
* 3 External links

## Classification

The upper level of classification and a few examples of proteins with known 3D structure:

### 1\. Channels and pores

#### 1.A α-type channels

* 1.A.1 Voltage-gated ion channel superfamily
* 1.A.2 Inward-rectifier K+ channel family
* 1.A.3 Ryanodine-inositol-1,4,5-trisphosphate receptor Ca2+ channel family
* 1.A.4 Transient receptor potential Ca2+ channel family
* 1.A.5 Polycystin cation channel family
* 1.A.6 Epithelial Na+ channel family
* 1.A.7 ATP-gated P2X receptor cation channel family
* 1.A.8 Major intrinsic protein superfamily
* 1.A.9 Neurotransmitter receptor, Cys loop, ligand-gated ion channel family
* 1.A.10 Glutamate-gated ion channel family of neurotransmitter receptors
* 1.A.11 Ammonium channel transporter family
* 1.A.12 Intracellular chloride channel family
* 1.A.13 Epithelial chloride channel family
* 1.A.14 Testis-enhanced gene transfer family
* 1.A.15 Nonselective cation channel-2 family
* 1.A.16 Formate-nitrite transporter family
* 1.A.17 Calcium-dependent chloride channel family
* 1.A.18 Chloroplast envelope anion-channel-forming Tic110 family
* 1.A.19 Type A influenza virus matrix-2 channel family
* 1.A.20 BCL2/Adenovirus E1B-interacting protein 3 family
* 1.A.21 Bcl-2 family
* 1.A.22 Large-conductance mechanosensitive ion channel
* 1.A.23 Small-conductance mechanosensitive ion channel
* 1.A.24 Gap-junction-forming connexin family
* 1.A.25 Gap-junction-forming innexin family
* 1.A.26 Mg2+ transporter-E family
* 1.A.27 Phospholemman family
* 1.A.28 Urea transporter family
* 1.A.29 Urea/amide channel family
* 1.A.30 H+\- or Na+-translocating bacterial MotAB flagellar motor/ExbBD outer-membrane transport energizer superfamily
* 1.A.31 Annexin family
* 1.A.32 Type B influenza virus NB channel family
* 1.A.33 Cation-channel-forming heat shock protein 70 family
* 1.A.34 Bacillus gap junction-like channel-forming complex family
* 1.A.35 CorA metal ion transporter family
* 1.A.36 Intracellular chloride channel family
* 1.A.37 CD20 Ca2+ channel family
* 1.A.38 Golgi pH regulator family
* 1.A.39 Type C influenza virus CM2 channel family
* 1.A.40 Human immunodeficiency virus type I Vpu channel family
* 1.A.41 Avian reovirus p10 Vvroporin family
* 1.A.42 HIV viral protein R family
* 1.A.43 Camphor resistance or fluoride exporter family
* 1.A.44 Pore-forming tail Tip pb2 protein of phage T5 family
* 1.A.45 Phage P22 injectisome family
* 1.A.46 Anion channel-forming bestrophin family
* 1.A.47 Nucleotide-sensitive anion-selective channel, ICln family
* 1.A.48 Anion channel Tweety family
* 1.A.49 Human coronavirus ns12.9 viroporin family
* 1.A.50 Phospholamban (Ca2+-channel and Ca2+-ATPase regulator) family
* 1.A.51 The Voltage-gated Proton Channel (VPC) Family
* 1.A.52 The Ca2+ Release-activated Ca2+ (CRAC) Channel (CRAC-C) Family
* 1.A.53 The Hepatitis C Virus P7 Viroporin Cation-selective Channel (HCV-P7) Family
* 1.A.54 The Presenilin ER Ca2+ Leak Channel (Presenilin) Family
* 1.A.55 The Synaptic Vesicle-Associated Ca2+ Channel, Flower (Flower) Family
* 1.A.56 The Copper Transporter (Ctr) Family
* 1.A.57 The Human SARS Coronavirus Viroporin (SARS-VP)
* 1.A.58 The Type B Influenza Virus Matrix Protein 2 (BM2-C) Family
* 1.A.59 The Bursal Disease Virus Pore-Forming Peptide, Pep46 (Pep46) Family
* 1.A.60 The Mammalian Reovirus Pre-forming Peptide, Mu-1 (Mu-1) Family
* 1.A.61 The Insect Nodavirus Channel-forming Chain F (Gamma-Peptide) Family
* 1.A.62 The Homotrimeric Cation Channel (TRIC) Family
* 1.A.63 The Ignicoccus Outer Membrane α-helical Porin (I-OMP Family
* 1.A.64 The Plasmolipin (Plasmolipin) Family
* 1.A.65 The Coronavirus Viroporin E Protein (Viroporin E) Family
* 1.A.66 The Pardaxin (Pardaxin) Family
* 1.A.67 The Membrane Mg2+ Transporter (MMgT) Family
* 1.A.68 The Viral Small Hydrophobic Viroporin (V-SH) Family
* 1.A.69 The Heteromeric Odorant Receptor Channel (HORC) Family
* 1.A.70 The Molecule Against Microbes A (MamA) Family
* 1.A.71 The Brain Acid-soluble Protein Channel (BASP1 Channel) Family
* 1.A.72 The Mer Superfamily
* 1.A.73 The Colicin Lysis Protein (CLP) Family
* 1.A.74 The Mitsugumin 23 (MG23) Family
* 1.A.75 The Mechanical Nociceptor, Piezo (Piezo) Family
* 1.A.76 The Magnesium Transporter1 (MagT1) Family
* 1.A.77 The Mg2+/Ca2+ Uniporter (MCU) Family
* 1.A.78 The K+-selective Channel in Endosomes and Lysosomes (KEL) Family
* 1.A.79 The Cholesterol Uptake Protein (ChUP) or Double Stranded RNA Uptake Family
* 1.A.80 The NS4a Viroporin (NS4a) Family
* 1.A.81 The Low Affinity Ca2+ Channel (LACC) Family
* 1.A.82 The Hair Cell Mechanotransduction Channel (HCMC) Family
* 1.A.83 The SV40 Virus Viroporin VP2 (SV40 VP2) Family
* 1.A.84 The Calcium Homeostasis Modulator Ca2+ Channel (CALHM-C) Family
* 1.A.85 The Poliovirus 2B Viroporin (2B Viroporin) Family
* 1.A.86 The Human Papilloma Virus type 16 (HPV16) L2 Viroporin (L2 Viroporin) Family
* 1.A.87 The Mechanosensitive Calcium Channel (MCA) Family
* 1.A.88 The Fungal Potassium Channel (F-Kch) Family
* 1.A.89 The Human Coronavirus 229E Viroporin (229E Viroporin) Family
* 1.A.90 The Human Metapneumovirus (HMPV) Viroporin (HMPV-Viroporin) Family
* 1.A.91 The Cytoadherence-linked Asexual Protein 3.2 of Plasmodium falciparum (Clag3) Family
* 1.A.92 The Reovirus Viroporin VP10 (RVP10) Family
* 1.A.93 The Bluetongue Virus Non-Structural Protein 3 Viroporin (NS3) Family
* 1.A.94 The Rotavirus Non-structural Glycoprotein 4 Viroporin (NSP4) Family
* 1.A.95 The Ephemerovirus Viroporin (EVVP) Family
* 1.A.96 The Human Polyoma Virus Viroporin (PVVP) Family
* 1.A.97 The Human Papillomavirus type 16 E5 Viroporin (HPV-E5) Family
* 1.A.98 Human T-Lymphotropic Virus 1 P13 protein (HTLV1-P13) Family
* 1.A.99 The Infectious Bronchitis Virus Envelope Small Membrane Protein E (IBV-E) Family
* 1.A.100 The Rhabdoviridae Putative Viroporin, U5 (RV-U5) Family
* 1.A.101 The Peroxisomal Pore-forming Pex11 (Pex11) Family
* 1.A.102 Influenza A viroporin PB1-F2 (PB1-F2) Family
* 1.A.103 The Simian Virus 5 (Parainfluenza Virus 5) SH (SV5-SH) Family
* 1.A.104 The Proposed Flagellar Biosynthesis Na+ Channel, FlaH (FlaH) Family
* 1.A.105 The Mixed Lineage Kinase Domain-like (MLKL) Family
* 1.A.106 The Calcium Load-activated Calcium Channel (CLAC) Family
* 1.A.107 The Pore-forming Globin (Globin) Family

#### 1.B. β-Barrel porins and other outer membrane proteins

* 1.B.1 General bacterial porin family
* 1.B.2 Chlamydial porin (CP) family
* 1.B.3 Sugar porin (SP) family
* 1.B.4 Brucella-Rhizobium porin (BRP) family
* 1.B.5 Pseudomonas OprP porin (POP) family
* 1.B.6 OmpA-OmpF porin (OOP) family
* 1.B.7 Rhodobacter PorCa porin (RPP) family
* 1.B.8 Mitochondrial and plastid porin (MPP) family
* 1.B.9 FadL outer membrane protein (FadL) family
* 1.B.10 Nucleoside-specific channel-forming outer membrane porin (Tsx) family
* 1.B.11 Outer membrane fimbrial usher porin (FUP) family
* 1.B.12 Autotransporter-1 (AT-1) family
* 1.B.13 Alginate export porin (AEP) family
* 1.B.14 Outer membrane receptor (OMR) family
* 1.B.15 Raffinose porin (RafY) family
* 1.B.16 Short chain amide and urea porin (SAP) family
* 1.B.17 Outer membrane factor (OMF) family
* 1.B.18 Outer membrane auxiliary (OMA) protein family
* 1.B.19 Glucose-selective OprB porin (OprB) family
* 1.B.20 Two-partner secretion (TPS) family
* 1.B.21 OmpG porin (OmpG) family
* 1.B.22 Outer bacterial membrane secretin (secretin) family
* 1.B.23 Cyanobacterial porin (CBP) family
* 1.B.24 Mycobacterial porin
* 1.B.25 Outer membrane porin (Opr) family
* 1.B.26 Cyclodextrin porin (CDP) family
* 1.B.31 Campylobacter jejuni major outer membrane porin (MomP) family
* 1.B.32 Fusobacterial outer membrane porin (FomP) family
* 1.B.33 Outer membrane protein insertion porin (Bam complex) (OmpIP) family
* 1.B.34 Corynebacterial porins
* 1.B.35 Oligogalacturonate-specific porin (KdgM) family
* 1.B.39 Bacterial porin, OmpW (OmpW) family
* 1.B.42 Outer membrane lipopolysaccharide export porin (LPS-EP) family
* 1.B.43 Coxiella porin P1 (CPP1) family
* 1.B.44 Probable protein translocating porphyromonas gingivalis porin (PorT) family
* 1.B.49 Anaplasma P44 (A-P44) porin family
* 1.B.48 Curli-like transporters
* 1.B.54 Intimin/Invasin (Int/Inv) or Autotransporter-3 family
* 1.B.55 Poly-acetyl-D-glucosamine porin (PgaA) family
* 1.B.57 Legionella major-outer membrane protein (LM-OMP) family
* 1.B.60 Omp50 porin (Omp50 Porin) family
* 1.B.61 Delta-proteobacterial porin (Delta-porin) family
* 1.B.62 Putative bacterial porin (PBP) family
* 1.B.66 Putative beta-barrel porin-2 (BBP2) family
* 1.B.67 Putative beta barrel porin-4 (BBP4) family
* 1.B.68 Putative beta barrel porin-5 (BBP5) superfamily
* 1.B.70 Outer membrane channel (OMC) family
* 1.B.71 Proteobacterial/verrucomicrobial porin (PVP) family
* 1.B.72 Protochlamydial outer membrane porin (PomS/T) family
* 1.B.73 Capsule biogenesis/assembly (CBA) family
* 1.B.78 DUF3374 electron transport-associated porin (ETPorin) family

#### 1.C Pore-forming toxins (proteins and peptides)

* 1.C.3 α-Hemolysin (αHL) family
* 1.C.4 Aerolysin family
* 1.C.5 ε-toxin family
* 1.C.11 RTX-toxin superfamily
* 1.C.12 Membrane attack complex/perforin superfamily
* 1.C.13 Leukocidin family
* 1.C.14 Cytohemolysin (CHL) family
* 1.C.39 Thiol-activated cholesterol-dependent cytolysin family
* 1.C.43 Lysenin family
* 1.C.56 Pseudomonas syringae HrpZ cation channel family
* 1.C.57 Clostridial cytotoxin family
* 1.C.58 The Microcin E492/C24 (Microcin E492) Family
* 1.C.74 Snake cytotoxin (SCT) family
* 1.C.97 Pleurotolysin pore-forming family

#### 1.D Non-ribosomally synthesized channels

* 1.D.1 The Gramicidin A Channel Family
* 1.D.2 The Channel-forming Syringomycin Family
* 1.D.3 The Channel-Forming Syringopeptin Family
* 1.D.4 The Tolaasin Channel-forming Family
* 1.D.5 The Alamethicin or Peptaibol Antibiotic Channel-forming Family
* 1.D.6 The Complexed Poly 3-Hydroxybutyrate Ca2+ Channel (cPHB-CC) Family
* 1.D.7 The Beticolin Family
* 1.D.8 The Saponin Family
* 1.D.9 The Polyglutamine Ion Channel (PG-IC) Family
* 1.D.10 The Ceramide-forming Channel Family
* 1.D.11 The Surfactin Family
* 1.D.12 The Beauvericin (Beauvericin) Family
* 1.D.13 DNA-delivery Amphipathic Peptide Antibiotics (DAPA)
* 1.D.14 The Synthetic Leu/Ser Amphipathic Channel-forming Peptide (l/S-SCP) Family
* 1.D.15 The Daptomycin (Daptomycin) Family
* 1.D.16 The Synthetic Amphipathic Pore-forming Heptapeptide (SAPH) Family
* 1.D.17 Combinatorially-designed, Pore-forming, β-sheet Peptide Family
* 1.D.18 The Pore-forming Guanosine-Bile Acid Conjugate Family
* 1.D.19 Ca2+ Channel-forming Drug, Digitoxin Family
* 1.D.20 The Pore-forming Polyene Macrolide Antibiotic/fungal Agent (PMAA) Family
* 1.D.21 The Lipid Nanopore (LipNP) Family
* 1.D.22 The Proton-Translocating Carotenoid Pigment, Zeaxanthin Family
* 1.D.23 Phenylene Ethynylene Pore-forming Antimicrobial (PEPA) Family
* 1.D.24 The Marine Sponge Polytheonamide B (pTB) Family
* 1.D.25 The Arylamine Foldamer (AAF) Family
* 1.D.26 The Dihydrodehydrodiconiferyl alcohol 9'-O-β-D-glucoside (DDDC9G) Family
* 1.D.27 The Thiourea isosteres Family
* 1.D.28 The Lipopeptaibol Family
* 1.D.29 The Macrocyclic Oligocholate Family
* 1.D.30 The Artificial Hydrazide-appended pillar[5]arene Channels (HAPA-C) Family
* 1.D.31 The Amphotericin B Family
* 1.D.32 The Pore-forming Novicidin Family
* 1.D.33 The Channel-forming Polytheonamide B Family
* 1.D.34 The Channel-forming Oligoester Bolaamphiphiles
* 1.D.35 The Pore-forming cyclic Lipodepsipeptide Family
* 1.D.36 The Oligobornene Ion Channel Family
* 1.D.37 The Hibicuslide C Family
* 1.D.38 The Cyclic Peptide Nanotube (cPepNT) Family
* 1.D.39 The Light-controlled Azobenzene-based Amphiphilic Molecular Ion Channel (AAM-IC) Family
* 1.D.40 The Protein-induced Lipid Toroidal Pore Family
* 1.D.41 The Sprotetonate-type Ionophore (Spirohexanolide) Family
* 1.D.42 The Phe-Arg Tripeptide-Pillar[5]Arene Channel (TPPA-C) Family
* 1.D.43 The Triazole-tailored Guanosine Dinucleoside Channel (TT-GDN-C) Family
* 1.D.44 The Synthetic Ion Channel with Redox-active Ferrocene (ICRF) Family
* 1.D.45 The Sonoporation and Electroporation Membrane Pore (SEMP) Family
* 1.D.46 The DNA Nanopore (DnaNP) Family
* 1.D.47 The Pore-forming Synthetic Cyclic Peptide (PSCP) Family
* 1.D.48 The Pore-forming Syringomycin E Family
* 1.D.49 The Transmembrane Carotenoid Radical Channel (CRC) Family
* 1.D.50 The Amphiphilic bis-Catechol Anion Transporter (AC-AT) Family
* 1.D.51 The Protein Nanopore (ProNP) Family
* 1.D.52 The Aromatic Oligoamide Macrocycle Nanopore (OmnNP) Family
* 1.D.53 The alpha, gamma-Peptide Nanotube (a,gPepNT) Family
* 1.D.54 The potassium-selective Hexyl-Benzoureido-15-Crown-5-Ether Ion Channel (HBEC) Family
* 1.D.55 The Porphyrin-based Nanopore (PorNP) Family
* 1.D.56 The Alpha-Aminoisobutyrate (Aib) Oligomeric Nanopore (AibNP) Family
* 1.D.57 The Lipid Electro-Pore (LEP) Family
* 1.D.58 The Anion Transporting Prodigiosene (Prodigiosene) Family
* 1.D.59 The Anion Transporting Perenosin (Perenosin) Family
* 1.D.60 The Alpha,Gamma-Cyclic Peptide (AGCP) Family
* 1.D.61 The Anionophoric 2,6-Bis(Benzimidazol-2-yl)Pyridine (ABBP) Family
* 1.D.62 The Bis-Triazolyl DiGuanosine Derivative Channel-forming (TDG) Family
* 1.D.63 The Peptide-based Nanopore (PepNP) Family
* 1.D.64 The Carbon Nanotube (CarNT) Family
* 1.D.65 The Pore-forming Amphidinol (Amphidinol) Family
* 1.D.66 The Helical Macromolecule Nanopore (HmmNP) Family
* 1.D.67 The Crown Ether-modified Helical Peptide Ion Channel (CEHP) Family
* 1.D.68 The Pore-forming Pleuronic Block Polymer (PPBP) Family
* 1.D.69 The Conical Nanopore (ConNP) Family
* 1.D.70 The Metallic (Au/Ag/Pt/graphene) Nanopore (MetNP) Family
* 1.D.71 The Synthetic TP359 Peptide (TP359) Family
* 1.D.72 The Chloride Carrier Triazine-based Tripodal Receptor (CCTTR) Family
* 1.D.73 The Mesoporous Silica Nanopore (SilNP) Family
* 1.D.74 The Stimulus-responsive Synthetic Rigid p-Octiphenyl Stave Pore (SSROP) Family

#### 1.E Holins

#### 1.F Vesicle fusion pores

* 1.F.1 The Synaptosomal Vesicle Fusion Pore (SVF-Pore) Family
* 1.F.2 The Octameric Exocyst (Exocyst) Family

#### 1.G Viral fusion pores

* 1.G.1 The Viral Pore-forming Membrane Fusion Protein-1 (VMFP1) Family
* 1.G.2 The Viral Pore-forming Membrane Fusion Protein-2 (VMFP2) Family
* 1.G.3 The Viral Pore-forming Membrane Fusion Protein-3 (VMFP3) Family
* 1.G.4 The Viral Pore-forming Membrane Fusion Protein-4 (VMFP4) Family
* 1.G.5 The Viral Pore-forming Membrane Fusion Protein-5 (VMFP5) Family
* 1.G.6 The Hepadnaviral S Fusion Protein (HBV-S Protein) Family
* 1.G.7 The Reovirus FAST Fusion Protein (R-FAST) Family
* 1.G.8 The Arenavirus Fusion Protein (AV-FP) Family
* 1.G.9 The Syncytin (Syncytin) Family
* 1.G.10 The Herpes Simplex Virus Membrane Fusion Complex (HSV-MFC) Family
* 1.G.11 Poxvirus Cell Entry Protein Complex (PEP-C) Family
* 1.G.12 The Avian Leukosis Virus gp95 Fusion Protein (ALV-gp95) Family
* 1.G.13 The Orthoreovirus Fusion-associated Small Transmembrane (FAST) Family
* 1.G.14 The Influenza Virus Hemagglutinin/Fusion Pore-forming Protein (Influenza-H/FPP) Family
* 1.G.15 The Autographa californica Nuclear Polyhedrosis Virus Major Envelope Glycoprotein GP64 (GP64) Family
* 1.G.16 The Human Immunodeficiency Virus Type 1 (HIV-1) Fusion Peptide (HIV-FP) Family
* 1.G.17 The Bovine Leukemia Virus Envelop Glycoprotein (BLV-Env) Family
* 1.G.18 The SARS-CoV Fusion Peptide in the Spike Glycoprotein Precursor (SARS-FP) Family
* 1.G.19 The Rotavirus Pore-forming Membrane Fusion Complex (Rotavirus MFC) Family
* 1.G.20 The Hantavirus Gc Envelope Fusion Glycoprotein (Gc-EFG) Family
* 1.G.21 The Epstein Barr Virus (Human Herpes Virus 4) Gp42 (Gp42) Family
* 1.G.22 The Cytomegalovirus (Human Herpesvirus 5) Glycoprotein gO (gO) Family

#### 1.H Paracellular channels

* 1.H.1 The Claudin Tight Junction (Claudin1) Family
* 1.H.2 The Invertebrate PMP22-Claudin (Claudin2) Family

#### 1.I Membrane-bound channels

* 1.I.1 Nuclear pore complex family, including karyopherins
* 1.I.2 Plant plasmodesmata family

### 2\. Electrochemical potential-driven transporters

#### 2.A Porters (uniporters, symporters, antiporters)

* 2.A.1 Major Facilitator superfamily (MFS), see also Lactose permease, Phosphate permease and Glucose transporter
* 2.A.2 The Glycoside-Pentoside-Hexuronide (GPH):Cation Symporter Family
* 2.A.3 The Amino Acid-Polyamine-Organocation (APC) Family
* 2.A.4 Cation diffusion facilitator (CDF) Family
* 2.A.5 Zinc (Zn2+)-Iron (Fe2+) Permease Family
* 2.A.6 Resistance-Nodulation-Cell Division Superfamily, see also SecDF protein-export membrane protein
* 2.A.7 The Drug/Metabolite Transporter (DMT) Superfamily
* 2.A.8 The Gluconate:H+ Symporter (GntP) Family
* 2.A.9 The Membrane Protein Insertase (YidC/Alb3/Oxa1) Family
* 2.A.10 The 2-Keto-3-Deoxygluconate Transporter (KdgT) Family
* 2.A.11 The Citrate-Mg2+:H+ (CitM) Citrate-Ca2+:H+ (CitH) Symporter (CitMHS) Family
* 2.A.12 ATP:ADP Antiporter Family
* 2.A.13 The C4-Dicarboxylate Uptake (Dcu) Family
* 2.A.14 Lactate Permease Family
* 2.A.15 The Betaine/Carnitine/Choline Transporter (BCCT) Family
* 2.A.16 Tellurite-resistance/Dicarboxylate Transporter Family
* 2.A.17 Proton-dependent Oligopeptide Transporter Family
* 2.A.18 The Amino Acid/Auxin Permease (AAAP) Family
* 2.A.19 The Ca2+:Cation Antiporter (CaCA) Family
* 2.A.20 The Inorganic Phosphate Transporter (PiT) Family
* 2.A.21 Solute:Sodium Symporter Family
* 2.A.22 The Neurotransmitter:Sodium Symporter Family
* 2.A.23 The Dicarboxylate/Amino Acid:Cation (Na+ or H+) Symporter (DAACS) Family
* 2.A.24 The 2-Hydroxycarboxylate Transporter (2-HCT) Family
* 2.A.25 Alanine or Glycine:Cation Symporter (AGCS) Family
* 2.A.26 The Branched Chain Amino Acid:Cation Symporter (LIVCS) Family
* 2.A.27 The Glutamate:Na+ Symporter (ESS) Family
* 2.A.28 Bile Acid:Na+ Symporter Family
* 2.A.29 Mitochondrial carrier Family
* 2.A.30 Cation-Chloride Cotransporter (CCC) Family
* 2.A.31 Anion Exchanger Family
* 2.A.32 The Silicon Transporter (Sit) Family
* 2.A.33 NhaA Na+:H+ Antiporter (NhaA) Family
* 2.A.34 The NhaB Na+:H+ Antiporter (NhaB) Family
* 2.A.35 The NhaC Na+:H+ Antiporter (NhaC) Family
* 2.A.36 Monovalent Cation:Proton Antiporter-1 (CPA1) Family
* 2.A.37 Monovalent Cation:Proton Antiporter-2 (CPA2) Family
* 2.A.38 K+ Transporter (Trk) Family
* 2.A.39 Nucleobase:Cation Symporter-1 (NCS1) Family
* 2.A.40 Nucleobase:Cation Symporter-2 (NCS2) Family
* 2.A.41 The Concentrative Nucleoside Transporter (CNT) Family
* 2.A.42 The Hydroxy/Aromatic Amino Acid Permease (HAAAP) Family
* 2.A.43 The Lysosomal Cystine Transporter (LCT) Family
* 2.A.45 Arsenite-Antimonite Efflux Family
* 2.A.46 The Benzoate:H+ Symporter (BenE) Family
* 2.A.47 Divalent Anion:Na+ Symporter (DASS) Family
* 2.A.48 The Reduced Folate Carrier (RFC) Family
* 2.A.49 Chloride Carrier/Channel (ClC) Family
* 2.A.50 The Glycerol Uptake (GUP) Family
* 2.A.51 The Chromate Ion Transporter (CHR) Family
* 2.A.52 The Ni2+-Co2+ Transporter (NiCoT) Family
* 2.A.53 Sulfate permease (SulP) Family
* 2.A.54 The Mitochondrial Tricarboxylate Carrier (MTC) Family
* 2.A.55 The Metal Ion (Mn2+-iron) Transporter (Nramp) Family
* 2.A.56 The Tripartite ATP-independent Periplasmic Transporter (TRAP-T) Family
* 2.A.57 The Equilibrative Nucleoside Transporter (ENT) Family
* 2.A.58 The Phosphate:Na+ Symporter (PNaS) Family
* 2.A.59 The Arsenical Resistance-3 (ACR3) Family
* 2.A.60 Organo Anion Transporter (OAT) Family
* 2.A.61 The C4-dicarboxylate Uptake C (DcuC) Family
* 2.A.62 The NhaD Na+:H+ Antiporter (NhaD) Family
* 2.A.63 The Monovalent Cation (K+ or Na+):Proton Antiporter-3 (CPA3) Family
* 2.A.64 Twin Arginine Targeting (Tat) Family
* 2.A.65 The Bilirubin Transporter (BRT) Family
* 2.A.66 The Multidrug/Oligosaccharidyl-lipid/Polysaccharide (MOP) Flippase Superfamily
* 2.A.67 The Oligopeptide Transporter (OPT) Family
* 2.A.68 The p-Aminobenzoyl-glutamate Transporter (AbgT) Family
* 2.A.69 The Auxin Efflux Carrier (AEC) Family
* 2.A.70 The Malonate:Na+ Symporter (MSS) Family
* 2.A.71 The Folate-Biopterin Transporter (FBT) Family
* 2.A.72 The K+ Uptake Permease (KUP) Family
* 2.A.73 The Short Chain Fatty Acid Uptake (AtoE) Family
* 2.A.74 The 4 TMS Multidrug Endosomal Transporter (MET) Family
* 2.A.75 The L-Lysine Exporter (LysE) Family
* 2.A.76 The Resistance to Homoserine/Threonine (RhtB) Family
* 2.A.77 The Cadmium Resistance (CadD) Family
* 2.A.78 The Branched Chain Amino Acid Exporter (LIV-E) Family
* 2.A.79 The Threonine/Serine Exporter (ThrE) Family
* 2.A.80 The Tricarboxylate Transporter (TTT) Family
* 2.A.81 The Aspartate:Alanine Exchanger (AAEx) Family
* 2.A.82 The Organic Solute Transporter (OST) Family
* 2.A.83 The Na+-dependent Bicarbonate Transporter (SBT) Family
* 2.A.84 The Chloroplast Maltose Exporter (MEX) Family
* 2.A.85 The Aromatic Acid Exporter (ArAE) Family
* 2.A.86 The Autoinducer-2 Exporter (AI-2E) Family (Formerly the PerM Family, TC #9.B.22)
* 2.A.87 The Prokaryotic Riboflavin Transporter (P-RFT) Family
* 2.A.88 Vitamin Uptake Transporter (VUT or ECF) Family
* 2.A.89 The Vacuolar Iron Transporter (VIT) Family
* 2.A.90 Vitamin A Receptor/Transporter (STRA6) Family
* 2.A.91 Mitochondrial tRNA Import Complex (M-RIC) (Formerly 9.C.8)
* 2.A.92 The Choline Transporter-like (CTL) Family
* 2.A.94 The Phosphate Permease (Pho1) Family
* 2.A.95 The 6TMS Neutral Amino Acid Transporter (NAAT) Family
* 2.A.96 The Acetate Uptake Transporter (AceTr) Family
* 2.A.97 The Mitochondrial Inner Membrane K+/H+ and Ca2+/H+ Exchanger (LetM1) Family
* 2.A.98 The Putative Sulfate Exporter (PSE) Family
* 2.A.99 The 6TMS Ni2+ uptake transporter (HupE-UreJ) Family
* 2.A.100 The Ferroportin (Fpn) Family
* 2.A.101 The Malonate Uptake (MatC) Family (Formerly UIT1)
* 2.A.102 The 4-Toluene Sulfonate Uptake Permease (TSUP) Family
* 2.A.103 The Bacterial Murein Precursor Exporter (MPE) Family
* 2.A.104 The L-Alanine Exporter (AlaE) Family
* 2.A.105 The Mitochondrial Pyruvate Carrier (MPC) Family
* 2.A.106 The Ca2+:H+ Antiporter-2 (CaCA2) Family
* 2.A.107 The MntP Mn2+ Exporter (MntP) Family
* 2.A.108 The Iron/Lead Transporter (ILT) Family
* 2.A.109 The Tellurium Ion Resistance (TerC) Family
* 2.A.110 The Heme Transporter, heme-responsive gene protein (HRG) Family
* 2.A.111 The Na+/H+ Antiporter-E (NhaE) Family
* 2.A.112 The KX Blood-group Antigen (KXA) Family
* 2.A.113 The Nickel/cobalt Transporter (NicO) Family
* 2.A.114 The Putative Peptide Transporter Carbon Starvation CstA (CstA) Family
* 2.A.115 The Novobiocin Exporter (NbcE) Family
* 2.A.116 The Peptidoglycolipid Addressing Protein (GAP) Family
* 2.A.117 The Chlorhexadine Exporter (CHX) family
* 2.A.118 The Basic Amino Acid Antiporter (ArcD) Family
* 2.A.119 The Organo-Arsenical Exporter (ArsP) Family
* 2.A.120 The Putative Amino Acid Permease (PAAP) Family
* 2.A.121 The Sulfate Transporter (CysZ) Family
* 2.A.122 The LrgB/CidB holin-like auxiliary protein (LrgB/CidB) Family
* 2.A.123 The Sweet; PQ-loop; Saliva; MtN3 (Sweet) Family
* 2.A.124 The Lysine Exporter (LysO) Family
* 2.A.125 The Eukaryotic Riboflavin Transporter (E-RFT) Family
* 2.A.126 The Fatty Acid Exporter (FAX) Family
* 2.A.127 Enterobacterial Cardiolipin Transporter (CLT) Family

#### 2.B Nonribosomally synthesized porters

* 2.B.1 The Valinomycin Carrier Family
* 2.B.2 The Monensin Family
* 2.B.3 The Nigericin Family
* 2.B.4 The Macrotetrolide Antibiotic (MA) Family
* 2.B.5 The Macrocyclic Polyether (MP) Family
* 2.B.6 The Ionomycin Family
* 2.B.7 The Transmembrane α-helical Peptide Phospholipid Translocation (TMP-PLT) Family
* 2.B.8 The Bafilomycin A1 (Bafilomycin) Family
* 2.B.9 The Cell Penetrating Peptide (CPP) Functional Family
* 2.B.10 The Synthetic CPP, Transportan Family
* 2.B.11 The Calcimycin or A23187 Carrier-type Ionophore Family
* 2.B.12 The Salinomycin Family
* 2.B.13 The Tetrapyrrolic Macrocyclic Anion Antiporter (TPMC-AA) Family
* 2.B.14 The Lasalocid A or X-537A Ionophore (Lasalocid) Family
* 2.B.15 The Tris-thiourea Tripodal-based Chloride Carrier (TTT-CC) Family
* 2.B.16 The Halogen-bond-containing Compound Anion Carrier (HCAC) Family
* 2.B.17 The Isophthalaminde Derivative H+:Cl− Co-transporter (IDC) Family
* 2.B.18 The Pyridine-2,6-Dicarboxamine Derivative (PDCA) H+:Cl− Co-transporter Family
* 2.B.19 The Calix(4)pyrrole Derivative (C4P) Family
* 2.B.20 The Prodigiosin (Prodigiosin) Chloride/Bicarbonate Exchanger Family
* 2.B.21 The ortho-Phenylenediamine-bis-Urea Derivative Anion Transporter (oPDA-U) Family
* 2.B.22 The Imidazolium-functionalized Anion Transporter (IAT) Family
* 2.B.23 The Homotetrameric Transmembrane Zn2+/Co2+:Proton Synthetic Antiporter, Rocker (Rocker) Family
* 2.B.24 The 2,6-Bis(benzimidazol-2-yl)pyridine Anion Carrier (BBP-AC) Family
* 2.B.25 The Peptide-mediated Lipid Flip-Flop (PLFF) Family
* 2.B.26 The Bis(Choloyl) Conjugate (BIBCC *2.B.27 The Tris-Urea Anion Transporter Family
* 2.B.29 The Anionophoric Marine Alkaloid Tambjamine Family

#### 2.C Ion-gradient-driven energizers

* 2.C.1 The TonB-ExbB-ExbD/TolA-TolQ-TolR (TonB) Family of Auxiliary Proteins for Energization of Outer Membrane Receptor (OMR)-mediated Active Transport

### 3\. Primary active transporters

#### 3.A. P-P-bond hydrolysis-driven transporters

* 3.A.1 ABC transporters including BtuCD, molybdate uptake transporter, Cystic fibrosis transmembrane conductance regulator and others
* 3.A.2 The H+\- or Na+-translocating F-type ATPase, V-type ATPase and A-type ATPase superfamily
* 3.A.3 The P-type ATPase Superfamily
* 3.A.4 The Arsenite-Antimonite efflux family
* 3.A.5 General secretory pathway (Sec) translocon (preprotein translocase SecY)
* 3.A.6 The Type III (Virulence-related) Secretory Pathway (IIISP) Family
* 3.A.7 The Type IV (Conjugal DNA-Protein Transfer or VirB) Secretory Pathway (IVSP) Family
* 3.A.8 The Mitochondrial Protein Translocase (MPT) Family
* 3.A.9 The Chloroplast Envelope Protein Translocase (CEPT or Tic-Toc) Family
* 3.A.10 H+, Na+-translocating Pyrophosphatase family
* 3.A.11 The Bacterial Competence-related DNA Transformation Transporter (DNA-T) Family
* 3.A.12 The Septal DNA Translocator (S-DNA-T) Family
* 3.A.13 The Filamentous Phage Exporter (FPhE) Family
* 3.A.14 The Fimbrilin/Protein Exporter (FPE) Family
* 3.A.15 The Outer Membrane Protein Secreting Main Terminal Branch (MTB) Family
* 3.A.16 The Endoplasmic Reticular Retrotranslocon (ER-RT) Family
* 3.A.17 The Phage T7 Injectisome (T7 Injectisome) Family
* 3.A.18 The Nuclear mRNA Exporter (mRNA-E) Family
* 3.A.19 The TMS Recognition/Insertion Complex (TRC) Family
* 3.A.20 The Peroxisomal Protein Importer (PPI) Family
* 3.A.21 The C-terminal Tail-Anchored Membrane Protein Biogenesis/ Insertion Complex (TAMP-B) Family
* 3.A.22 The Transcription-coupled TREX/TAP Nuclear mRNA Export Complex (TREX) Family
* 3.A.23 The Type VI Symbiosis/Virulence Secretory Pathway (VISP) Family
* 3.A.24 Type VII or ESX Protein Secretion System (T7SS) Family
* 3.A.25 The Symbiont-specific ERAD-like Machinery (SELMA) Family
* 3.A.26 The Plasmodium Translocon of Exported proteins (PTEX) Family

#### 3.B Decarboxylation-driven transporters

* 3.B.1 The Na+-transporting Carboxylic Acid Decarboxylase (NaT-DC) Family

#### 3.C Methyltransfer-driven transporters

* 3.C.1 The Na+ Transporting Methyltetrahydromethanopterin:Coenzyme M Methyltransferase (NaT-MMM) Family

#### 3.D. Oxidoreduction-driven transporters

They include a number of transmembrane cytochrome b-like proteins including coenzyme Q - cytochrome c reductase (cytochrome bc1 ); cytochrome b6f complex; formate dehydrogenase, respiratory nitrate reductase; succinate - coenzyme Q reductase (fumarate reductase); and succinate dehydrogenase. See electron transport chain.

* 3.D.1 The H+ or Na+-translocating NADH Dehydrogenase ("complex I") family
* 3.D.2 The Proton-translocating Transhydrogenase (PTH) Family
* 3.D.3 The Proton-translocating Quinol:Cytochrome c Reductase) Superfamily
* 3.D.4 Proton-translocating Cytochrome Oxidase (COX) Superfamily
* 3.D.5 The Na+-translocating NADH:Quinone Dehydrogenase (Na-NDH or NQR) Family
* 3.D.6 The Putative Ion (H+ or Na+)-translocating NADH:Ferredoxin Oxidoreductase (NFO or RNF) Family
* 3.D.7 The H2:Heterodisulfide Oxidoreductase (HHO) Family
* 3.D.8 The Na+\- or H+-Pumping Formyl Methanofuran Dehydrogenase (FMF-DH) Family
* 3.D.9 The H+-translocating F420H2 Dehydrogenase (F420H2DH) Family
* 3.D.10 The Prokaryotic Succinate Dehydrogenase (SDH) Family

#### 3.E. Light absorption-driven transporters

* Bacteriorhodopsin-like proteins including rhodopsin (see also opsin)
* Bacterial photosynthetic reaction centres and photosystems I and II
* Light harvesting complexes from bacteria and chloroplasts

### 4\. Group translocators

#### 4.A Phosphotransfer-driven group translocators

Main page: Biology:PTS-GFL superfamily

* 4.A.1 The PTS Glucose-Glucoside (Glc) Family
* 4.A.2 The PTS Fructose-Mannitol (Fru) Family
* 4.A.3 The PTS Lactose-N,N'-Diacetylchitobiose-β-glucoside (Lac) Family
* 4.A.4 The PTS Glucitol (Gut) Family
* 4.A.5 The PTS Galactitol (Gat) Family
* 4.A.6 The PTS Mannose-Fructose-Sorbose (Man) Family
* 4.A.7 The PTS L-Ascorbate (L-Asc) Family

#### 4.B Nicotinamide ribonucleoside uptake transporters

* 4.B.1 The Nicotinamide Ribonucleoside (NR) Uptake Permease (PnuC) Family

#### 4.C Acyl CoA ligase-coupled transporters

* 4.C.1 The Proposed Fatty Acid Transporter (FAT) Family
* 4.C.2 The Carnitine O-Acyl Transferase (CrAT) Family
* 4.C.3 The Acyl-CoA Thioesterase (AcoT) Family

#### 4.D Polysaccharide Synthase/Exporters

* 4.D.1 The Putative Vectorial Glycosyl Polymerization (VGP) Family
* 4.D.2 The Glycosyl Transferase 2 (GT2) Family
* 4.D.3 The Glycan Glucosyl Transferase (OpgH) Family

#### 4.E. Vacuolar Polyphosphate Polymerase-catalyzed Group Translocators

* 4.E.1 The Vacuolar (Acidocalcisome) Polyphosphate Polymerase (V-PPP) Family

### 5\. Transport electron carriers

#### 5.A Transmembrane 2-electron transfer carriers

* 5.A.1 The Disulfide Bond Oxidoreductase D (DsbD) Family
* 5.A.2 The Disulfide Bond Oxidoreductase B (DsbB) Family
* 5.A.3 The Prokaryotic Molybdopterin-containing Oxidoreductase (PMO) Family

#### 5.B Transmembrane 1-electron transfer carriers

* 5.B.1 The Phagocyte (gp91phox) NADPH Oxidase Family
* 5.B.2 The Eukaryotic Cytochrome b561 (Cytb561) Family
* 5.B.3 The Geobacter Nanowire Electron Transfer (G-NET) Family
* 5.B.4 The Plant Photosystem I Supercomplex (PSI) Family
* 5.B.5 The Extracellular Metal Oxido-Reductase (EMOR) Family
* 5.B.6 The Transmembrane Epithelial Antigen Protein-3 Ferric Reductase (STEAP) Family
* 5.B.7 The YedZ (YedZ) Family
* 5.B.8 The Trans-Outer Membrane Electron Transfer Porin/Cytochrome Complex (ET-PCC) Family
* 5.B.9 The Porin-Cytochrome c (Cyc2) Family

### 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

## References

1. ↑ Saier, Milton H.; Reddy, Vamsee S.; Tamang, Dorjee G.; Västermark, Åke (January 2014). "The Transporter Classification Database". Nucleic Acids Research 42 (D1): D251–D258. doi:10.1093/nar/gkt1097. PMID 24225317.
2. ↑ Saier, M. H.; Yen, M. R.; Noto, K.; Tamang, D. G.; Elkan, C. (1 January 2009). "The Transporter Classification Database: recent advances". Nucleic Acids Research 37 (Database): D274–D278. doi:10.1093/nar/gkn862. PMID 19022853.
3. ↑ Saier, M. H.; Tran, C. V.; Barabote, R. D. (1 January 2006). "TCDB: the Transporter Classification Database for membrane transport protein analyses and information". Nucleic Acids Research 34 (90001): D181–D186. doi:10.1093/nar/gkj001. PMID 16381841.

## External links

* Transporter Classification Database
* List at qmul.ac.uk
* "TCDB: the Transporter Classification Database for membrane transport protein analyses and information". Nucleic Acids Res. 34 (Database issue): D181–6. January 2006. doi:10.1093/nar/gkj001. PMID 16381841.
* "The transporter classification (TC) system, 2002". Crit. Rev. Biochem. Mol. Biol. 37 (5): 287–337. 2002. doi:10.1080/10409230290771528. PMID 12449427.
* Classification of human transporters in pharmacology

* v
* t
* e

Membrane transport protein: ion channels (TC 1A)

Ca2+: Calcium channel

| Ligand-gated|

* Inositol trisphosphate receptor
* 1
* 2
* 3
* Ryanodine receptor
* 1
* 2
* 3

|

Voltage-gated|

* L-type/Cavα
* 1.1
* 1.2
* 1.3
* 1.4
* N-type/Cavα2.2
* P-type/Cavα
* 2.1
* Q-type/Cavα2.1
* R-type/Cavα2.3
* T-type/Cavα
* 3.1
* 3.2
* 3.3

* α2δ-subunits
* 1
* 2
* β-subunits
* β1
* β2
* β3
* β4
* γ-subunits
* γ1
* γ2
* γ3
* γ4

* Cation channels of sperm
* 1
* 2
* 3
* 4
* Two-pore channel
* 1
* 2

Na+: Sodium channel

| Constitutively active|

* Epithelial sodium channel
* α
* β
* γ
* δ

|

Proton-gated|

* Amiloride-sensitive cation channel
* 1
* 2
* 3
* 4

Voltage-gated|

* Navα
* 1.1
* 1.2
* 1.3
* 1.4
* 1.5
* 1.6
* 1.7
* 1.8
* 1.9
* 7A
* Navβ
* 1
* 2
* 3
* 4

K+: Potassium channel

| Calcium-activated|

* BK channel
* α1
* β1
* β2
* β3
* β4
* SK channel
* SK1
* SK2
* SK3
* IK channel
* IK1
* KCa
* 1.1
* 2.1
* 2.2
* 2.3
* 3.1
* 4.1
* 4.2
* 5.1

|

Inward-rectifier|

* KATP
* Kir
* 1.1
* 2.1
* 2.2
* 2.3
* 2.4
* 2.6
* GIRK/Kir
* 3.1
* 3.2
* 3.3
* 3.4
* Kir
* 4.1
* 4.2
* 5.1
* 6.1
* 6.2
* 7.1

Tandem pore domain|

* K2P
* 1
* 2
* 3
* 4
* 5
* 6
* 7
* 9
* 10
* 12
* 13
* 15
* 16
* 17
* 18

Voltage-gated|

* Kvα1-6
* 1.1
* 1.2
* 1.3
* 1.4
* 1.5
* 1.6
* 1.7
* 1.8
*     * 2.1
* 2.2
*     * 3.1
* 3.2
* 3.3
* 3.4
*     * 4.1
* 4.2
* 4.3
*     * 5.1
*     * 6.1
* 6.2
* 6.3
* 6.4

* Kvα7-12
* 7.1
* 7.2
* 7.3
* 7.4
* 7.5
*     * 8.1
* 8.2
*     * 9.1
* 9.2
* 9.3
*     * 10.1
* 10.2
*     * 11.1/hERG
* 11.2
* 11.3
*     * 12.1
* 12.2
* 12.3

* Kvβ
* 1
* 2
* 3
* KCNIP
* 1
* 2
* 3
* 4
* minK/ISK
* minK/ISK-like
* MiRP
* 1
* 2
* 3
* Shaker (gene)

Miscellaneous

| Cl−: Chloride channel|

* Calcium-activated chloride channels
* Anoctamin
* ANO1
* Bestrophin
* 1
* 2
* Chloride Channel Accessory
* 1
* 2
* 3
* 4
* CFTR
* CLCN
* 1
* 2
* 3
* 4
* 5
* 6
* 7
* KA
* KB
* CLIC
* 1
* 2
* 3
* 4
* 5
* 6
* L1
* CLNS
* 1A
* 1B

|

H+: Proton channel|

* HVCN1

M+: CNG cation channel|

* α
* 1
* 2
* 3
* 4
* β
* 1
* 2
* 3
* HCN
* FC
* 1
* 2
* 3
* 4

M+: TRP cation channel|

* TRPA (1)
* TRPC
* 1
* 2
* 3
* 4
* 4AP
* 5
* 6
* 7
* TRPM
* 1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* TRPML
* 1
* 2
* 3
* TRPN
* TRPP
* 1
* 2
* TRPV
* 1
* 2
* 3
* 4
* 5
* 6

H2O (+ solutes): Porin|

* Aquaporin
* 0
* 1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* 9
* Voltage-dependent anion channel
* 1
* 2
* 3
* General bacterial porin family

Cytoplasm: Gap junction|

* Connexin
* A
* GJA1
* GJA3
* GJA4
* GJA5
* GJA8
* GJA9
* GJA10
* B
* GJB1
* GJB2
* GJB3
* GJB4
* GJB5
* GJB6
* GJB7
* C
* GJC1
* GJC2
* GJC3
* D
* GJD2
* GJD3
* GJD4
* Innexin

By gating mechanism

| Ion channel class|

* Ligand-gated
* Light-gated
* Voltage-gated
* Stretch-activated

|

see also disorders

* v
* t
* e

Membrane proteins, carrier proteins: membrane transport proteins solute carrier (TC 2A)

By group

SLC1–10

| (1):|

* high affinity glutamate and neutral amino-acid transporter
* SLC1A1
* 2
* 3
* 4
* 5
* 6
* 7

|

(2):|

* facilitative GLUT transporter
* SLC2A1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* 9
* 10
* 11
* 12
* 13
* 14

(3):|

* heavy subunits of heterodimeric amino-acid transporters
* SLC3A1
* 2

(4):|

* bicarbonate transporter
* SLC4A1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* 9
* 10
* 11

(5):|

* sodium glucose cotransporter
* SLC5A1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* 9
* 10
* 11
* 12

(6):|

* sodium\- and chloride\- dependent sodium:neurotransmitter symporters
* SLC6A1
* SLC6A2
* SLC6A3
* SLC6A4
* SLC6A5
* SLC6A6
* SLC6A7
* SLC6A8
* SLC6A9
* SLC6A10
* SLC6A11
* SLC6A12
* SLC6A13
* SLC6A14
* SLC6A15
* SLC6A16
* SLC6A17
* SLC6A18
* SLC6A19
* SLC6A20

(7):|

* cationic amino-acid transporter/glycoprotein-associated
* SLC7A1
* SLC7A2
* SLC7A3
* SLC7A4
* glycoprotein-associated/light or catalytic subunits of heterodimeric amino-acid transporters
* SLC7A5
* SLC7A6
* SLC7A7
* SLC7A8
* SLC7A9
* SLC7A10
* SLC7A11
* SLC7A13
* SLC7A14

(8):|

* Na+/Ca2+ exchanger
* SLC8A1
* SLC8A2
* SLC8A3

(9):|

* Na+/H+ exchanger
* SLC9A1
* SLC9A2
* SLC9A3
* SLC9A4
* SLC9A5
* SLC9A6
* SLC9A7
* SLC9A8
* SLC9A9
* SLC9A10
* SLC9A11

(10):|

* sodium bile salt cotransport
* SLC10A1
* SLC10A2
* SLC10A3
* SLC10A4
* SLC10A5
* SLC10A6
* SLC10A7
* 10A1
* 10A2
* 10A3
* 10A7

SLC11–20

| (11):|

* proton coupled metal ion transporter
* SLC11A1
* SLC11A211A3

|

(12):|

* electroneutral cation-Cl cotransporter
* SLC12A1
* SLC12A2
* SLC12A3
* SLC12A4
* SLC12A5
* SLC12A6
* SLC12A7
* SLC12A8
* SLC12A9

(13):|

* human Na+-sulfate/carboxylate cotransporter
* SLC13A1
* SLC13A2
* SLC13A3
* SLC13A4
* SLC13A5

(14):|

* urea transporter
* SLC14A1
* SLC14A2

(15):|

* proton oligopeptide cotransporter
* SLC15A1
* SLC15A2
* SLC15A3
* SLC15A4

(16):|

* monocarboxylate transporter
* SLC16A1
* SLC16A2
* SLC16A3
* SLC16A4
* SLC16A5
* SLC16A6
* SLC16A7
* SLC16A8
* SLC16A9
* SLC16A10
* SLC16A11
* SLC16A12
* SLC16A13
* SLC16A14

(17):|

* Vesicular glutamate transporter 1
* SLC17A1
* SLC17A2
* SLC17A3
* SLC17A4
* SLC17A5
* SLC17A6
* SLC17A7
* SLC17A8
* SLC17A9

(18):|

* vesicular monoamine transporter
* SLC18A1
* SLC18A2
* SLC18A3

(19):|

* folate/thiamine transporter
* SLC19A1
* SLC19A2
* SLC19A3

(20):|

* type III Na+-phosphate cotransporter
* SLC20A1
* SLC20A2

SLC21–30

| (21):|

* Organic anion-transporting polypeptide
* SLCO1A2
* SLCO1B1
* SLCO1B3
* SLCO1B4
* SLCO1C1
*     * SLCO2A1
* SLCO2B1
*     * SLCO3A1
*     * SLCO4A1
* SLCO4C1
*     * SLCO5A1(SLCO6A1)

|

(22):|

* organic cation/anion/zwitterion transporter
* SLC22A1
* SLC22A2
* SLC22A3
* SLC22A4
* SLC22A5
* SLC22A6
* SLC22A7
* SLC22A8
* SLC22A9
* SLC22A10
* SLC22A11
* SLC22A12
* SLC22A13
* SLC22A14
* SLC22A15
* SLC22A16
* SLC22A17
* SLC22A18
* SLC22A19
* SLC22A20

(23):|

* Na+-dependent ascorbic acid transporter
* SLC23A1
* SLC23A2
* SLC23A3
* SLC23A4

(24):|

* Na+/(Ca2+-K+) exchanger
* SLC24A1
* SLC24A2
* SLC24A3
* SLC24A4
* SLC24A5
* SLC24A6

(25):|

* mitochondrial carrier
* SLC25A1
* SLC25A2
* SLC25A3
* SLC25A4
* SLC25A5
* SLC25A6
* SLC25A7
* SLC25A8
* SLC25A9
* SLC25A10
* SLC25A11
* SLC25A12
* SLC25A13
* SLC25A14
* SLC25A15
* SLC25A16
* SLC25A17
* SLC25A18
* SLC25A19
* SLC25A20
* SLC25A21
* SLC25A22
* SLC25A23
* SLC25A24
* SLC25A25
* SLC25A26
* SLC25A27
* SLC25A28
* SLC25A29
* SLC25A30
* SLC25A31
* SLC25A32
* SLC25A33
* SLC25A34
* SLC25A35
* SLC25A36
* SLC25A37
* SLC25A38
* SLC25A39
* SLC25A40
* SLC25A41
* SLC25A42
* SLC25A43
* SLC25A44
* SLC25A45
* SLC25A46

(26):|

* multifunctional anion exchanger
* SLC26A1
* SLC26A2
* SLC26A3
* SLC26A4
* SLC26A5
* SLC26A6
* SLC26A7
* SLC26A8
* SLC26A9
* SLC26A10
* SLC26A11

(27):|

* fatty acid transport proteins
* SLC27A1
* SLC27A2
* SLC27A3
* SLC27A4
* SLC27A5
* SLC27A6

(28):|

* Na+-coupled nucleoside transport (SLC28A1
* SLC28A2
* SLC28A3

(29):|

* facilitative nucleoside transporter
* SLC29A1
* SLC29A2
* SLC29A3
* SLC29A4

(30):|

* zinc efflux
* SLC30A1
* SLC30A2
* SLC30A3
* SLC30A4
* SLC30A5
* SLC30A6
* SLC30A7
* SLC30A8
* SLC30A9
* SLC30A10

SLC31–40

| (31):|

* copper transporter
* SLC31A1

|

(32):|

* Vesicular glutamate transporter 1
* SLC32A1

(33):|

* Acetyl-CoA transporter
* SLC33A1

(34):|

* type II Na+-phosphate cotransporter
* SLC34A1
* SLC34A2
* SLC34A3

(35):|

* nucleoside-sugar transporter
* SLC35A1
* SLC35A2
* SLC35A3
* SLC35A4
* SLC35A5
*     * SLC35B1
* SLC35B2
* SLC35B3
* SLC35B4
*     * SLC35C1
* SLC35C2
*     * SLC35D1
* SLC35D2
* SLC35D3
*     * SLC35E1
* SLC35E2
* SLC35E3
* SLC35E4

(36):|

* proton-coupled amino-acid transporter
* SLC36A1
* SLC36A2
* SLC36A3
* SLC36A436A2

(37):|

* sugar-phosphate/phosphate exchanger
* SLC37A1
* SLC37A2
* SLC37A3
* SLC37A4

(38):|

* System A & N, sodium-coupled neutral amino-acid transporter
* SLC38A1
* SLC38A2
* SLC38A3
* SLC38A4
* SLC38A5
* SLC38A6
* SLC38A10

(39):|

* metal ion transporter
* SLC39A1
* SLC39A2
* SLC39A3
* SLC39A4
* SLC39A5
* SLC39A6
* SLC39A7
* SLC39A8
* SLC39A9
* SLC39A10
* SLC39A11
* SLC39A12
* SLC39A13
* SLC39A14

(40):|

* basolateral iron transporter
* SLC40A1

SLC41–48

| (41):|

* Magnesium transporter E
* SLC41A1
* SLC41A2
* SLC41A3

|

(42):|

* Ammonia transporter
* RhAG
* RhBG
* RhCG

(43):|

* Na+-independent, system-L like amino-acid transporter
* SLC43A1
* SLC43A2
* SLC43A3

(44):|

* Choline-like transporter
* SLC44A1
* SLC44A2
* SLC44A3
* SLC44A4
* SLC44A5

(45):|

* Putative sugar transporter
* SLC45A1
* SLC45A2
* SLC54A3
* SLC45A4

(46):|

* Folate transporter
* SLC46A1
* SLC46A2

(47):|

* multidrug and toxin extrusion
* SLC47A1
* SLC47A2

(48):|

* Heme transporter

SLCO1–4

* O1A2
* O1B1
* O1B3
* O2B1
* O431
* O4A1

Ion pumps

| Symporter, Cotransporter|

* Na+/K+,Cl−
* Na+/Pi3
* Na+/Cl−
* Na+/glucose
* Na+/I−
* Cl−/K+
* 4
* 5

|

Antiporter (exchanger)|

* Na+/H+
* Na+/Ca2+
* Na+/(Ca2+-K+) - Cl−/HCO−3 (Band 3)
* Cl−-formate
* Cl−-oxalate

see also solute carrier disorders

* v
* t
* e

Nonribosomally synthesized porters (TC 2B)

* Valinomycin
* Monensin
* Nigericin
* Ionomycin

* v
* t
* e

Membrane transport protein: ion pumps, ATPases / ATP synthase (TC 3A2-3A3)

F-, V-, and A-type ATPase (3.A.2)|

| H+ (F-type)|

* H+ transporting, mitochondrial: ATP5A1
* ATP5B
* ATP5C1
* ATP5C2
* ATP5D
* ATP5E
* ATP5F1
* ATP5G1
* ATP5G2
* ATP5G3
* ATP5H
* ATP5I
* ATP5J
* ATP5J2
* ATP5L
* ATP5L2
* ATP5O
* ATP5S

|

H+ (V-type)|

* H+ transporting, lysosomal: ATP6AP1
* ATP6AP2
* ATP6V1A
* ATP6V1B1
* ATP6V1B2
* ATP6V1C1
* ATP6V1C2
* ATP6V1D
* ATP6V1E1
* ATP6V1E2
* ATP6V1F
* ATP6V1G1
* ATP6V1G2
* ATP6V1G3
* ATP6V1H
* ATP6V0A1
* ATP6V0A2
* ATP6V0A4
* ATP6V0B
* ATP6V0C
* ATP6V0D1
* ATP6V0D2
* ATP6V0E
* ATP6V0E1

* TCIRG1

A-ATPase|

found in Archea

P-type ATPase (3.A.3)|

* 3.A.3.1.1: Na+/K+ transporting: ATP1A1
* ATP1A2
* ATP1A3
* ATP1A4
* ATP1B1
* ATP1B2
* ATP1B3
* ATP1B4
* ATP1G1

* 3.A.3.1.2: H+/K+
* H+/K+ exchanging: ATP4A
* ATP4B

* 3.A.3.1.4: H+/K+ transporting, nongastric: ATP12A

* 3.A.3.2: Ca2+ (SERCA, PMCA, SPCA) / Ca2+ transporting: ATP2A1
* ATP2A2
* ATP2A3
* ATP2B1
* ATP2B2
* ATP2B3
* ATP2B4
* ATP2C1

* 3.A.3.5: Cu2+ transporting: ATP7A
* ATP7B

* 3.A.3.8.8: flippase: ATP8A2

* Other/ungrouped:

* Na+/K+ – H+

* Mg2+ transporting: ATP3
* Class I, type 8: ATP8A1
* ATP8B1
* ATP8B2
* ATP8B3
* ATP8B4
* Class II, type 9: ATP9A
* ATP9B
* Class V, type 10: ATP10A
* ATP10B
* ATP10D
* Class VI, type 11: ATP11A
* ATP11B
* ATP11C
* type 13: ATP13A1
* ATP13A2
* ATP13A3
* ATP13A4
* ATP13A5

see also ATPase disorders

* v
* t
* e

Ion pump: proton pumps: Oxidoreduction-driven transporters (TC 3D)

ETC|

* ETC Complex I
* ETC Complex III
* ETC Complex IV

Other|

* Cytochrome b6f complex
* Inorganic pyrophosphatase
* V-ATPase

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Original source: https://en.wikipedia.org/wiki/Transporter Classification Database. Read more

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