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| | uidB | Glucuronide permease; Protein involved in carbohydrate catabolic process. (457 aa) |
| | yqjH | Putative siderophore interacting protein; Plays a role in iron homeostasis under excess nickel conditions; Belongs to the SIP oxidoreductase family. (254 aa) |
| | zupT | Zinc transporter; Mediates zinc uptake. May also transport other divalent cations such as copper and cadmium ions; Belongs to the ZIP transporter (TC 2.A.5) family. ZupT subfamily. (257 aa) |
| | tolC | Transport channel; Outer membrane channel, which is required for the function of several efflux systems such as AcrAB-TolC, AcrEF-TolC, EmrAB-TolC and MacAB-TolC. These systems are involved in export of antibiotics and other toxic compounds from the cell. TolC is also involved in import of colicin E1 into the cells. (493 aa) |
| | lplT | Lysophospholipid transporter; Catalyzes the facilitated diffusion of 2-acyl-glycero-3- phosphoethanolamine (2-acyl-GPE) into the cell. Belongs to the major facilitator superfamily. LplT (TC 2.A.1.42) family. (397 aa) |
| | mgtA | Magnesium transporter; Mediates magnesium influx to the cytosol. Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IIIB subfamily. (898 aa) |
| | mntH | Manganese/divalent cation transporter; H(+)-stimulated, divalent metal cation uptake system. Involved in manganese and iron uptake. Can also transport cadmium, cobalt, zinc and to a lesser extent nickel and copper. Involved in response to reactive oxygen. (412 aa) |
| | yfbS | Putative transport protein. (610 aa) |
| | ccmA | Heme export ABC transporter ATPase; Part of the ABC transporter complex CcmAB involved in the biogenesis of c-type cytochromes; once thought to export heme, this seems not to be the case, but its exact role is uncertain. Responsible for energy coupling to the transport system. (207 aa) |
| | ccmB | Heme export ABC transporter permease; Required for the export of heme to the periplasm for the biogenesis of c-type cytochromes. (220 aa) |
| | ccmC | Heme export ABC transporter permease; Required for the export of heme to the periplasm for the biogenesis of c-type cytochromes. (245 aa) |
| | ccmD | Cytochrome c biogenesis protein; Required for the export of heme to the periplasm for the biogenesis of c-type cytochromes. (69 aa) |
| | ccmE | Periplasmic heme chaperone; Heme chaperone required for the biogenesis of c-type cytochromes. Transiently binds heme delivered by CcmC and transfers the heme to apo-cytochromes in a process facilitated by CcmF and CcmH; Belongs to the CcmE/CycJ family. (159 aa) |
| | ccmF | Heme lyase, CcmF subunit; Required for the biogenesis of c-type cytochromes. Possible subunit of a heme lyase. (647 aa) |
| | bcr | Bicyclomycin/cysteine/sulfonamide efflux transporter; Involved in sulfonamide (sulfathiazole) and bicyclomycin resistance. Probable membrane translocase. A transporter able to export peptides. When overexpressed, allows cells deleted for multiple peptidases (pepA, pepB, pepD and pepN) to grow in the presence of dipeptides Ala-Gln or Gly-Tyr which otherwise inhibit growth. Cells overexpressing this protein have decreased intracellular levels of Ala-Gln dipeptide, and in a system that produces the Ala-Gln dipeptide overproduction of this protein increases export of the dipeptide. Belongs [...] (396 aa) |
| | cirA | Colicin IA outer membrane receptor and translocator; Not yet known. Postulated to participate in iron transport. Outer membrane receptor for colicins IA and IB. (663 aa) |
| | rcnA | Membrane protein conferring nickel and cobalt resistance; Efflux system for nickel and cobalt. (274 aa) |
| | insD1-3 | CP4-44 prophage; putative disrupted hemin or colicin receptor;Phage or Prophage Related; interrupted by IS2 and C-terminal deletion. (301 aa) |
| | ftnA | Ferritin iron storage protein (cytoplasmic); Iron-storage protein; Belongs to the ferritin family. Prokaryotic subfamily. (165 aa) |
| | ftnB | Ferritin B, putative ferrous iron reservoir; Ferritin-like protein; Protein involved in iron ion transport. (167 aa) |
| | znuB | Zinc ABC transporter permease; Involved in the high-affinity zinc uptake transport system; Belongs to the ABC-3 integral membrane protein family. (261 aa) |
| | znuC | Zinc ABC transporter ATPase; Part of the ABC transporter complex ZnuABC involved in zinc import. Responsible for energy coupling to the transport system. Belongs to the ABC transporter superfamily. Zinc importer (TC 3.A.1.15.5) family. (251 aa) |
| | znuA | Zinc ABC transporter periplasmic binding protein; Involved in the high-affinity zinc uptake transport system. (310 aa) |
| | yobA | CopC family protein. (124 aa) |
| | yebZ | Inner membrane protein; Putative resistance protein; Protein involved in response to drug. (290 aa) |
| | mntP | Putative Mn(2+) efflux pump, mntR-regulated; Probably functions as a manganese efflux pump. Belongs to the MntP (TC 9.B.29) family. (188 aa) |
| | cusB | Copper/silver efflux system, membrane fusion protein; Part of a cation efflux system that mediates resistance to copper and silver. (407 aa) |
| | cusF | Periplasmic copper- and silver-binding protein; Part of a cation efflux system that mediates resistance to copper and silver. Binds one copper per polypeptide. (110 aa) |
| | cusC | Copper/silver efflux system, outer membrane component; Forms pores that allow passive diffusion of cations across the outer membrane. Part of a cation efflux system that mediates resistance to copper and silver. In pathogenic strains it allows the bacteria to invade brain microvascular endothelial cells (BMEC) thus allowing it to cross the blood-brain barrier and cause neonatal meningitis. (457 aa) |
| | copA | Copper transporter; [Copper-exporting P-type ATPase]: Exports Cu(+) from the cytoplasm to the periplasm. Binds 2 Cu(+) ions per monomer, which are transferred to periplasmic copper chaperone CusF upon ATP hydrolysis. In vitro an excess of CusF over CopA is required for efficient transfer. May also be involved in silver export. (834 aa) |
| | ybaL | Inner membrane putative NAD(P)-binding transporter; Putative transport protein. (558 aa) |
| | mscK | Mechanosensitive channel protein, intermediate conductance, K+ regulated; Mechanosensitive channel that opens in response to membrane tension and specific ionic conditions. Requires high concentrations of external K(+), NH(4)(+), Rb(+) or Cs(+) to gate. May participate in the regulation of osmotic pressure changes within the cell, although it does not appear to have a major role in osmolarity regulation. Forms an ion channel of 1.0 nanosiemens conductance. The channel can remain active for between 30 seconds and over 3 minutes; it does not desensitize upon extended pressure. Its activi [...] (1120 aa) |
| | yagG | CP4-6 prophage; Putative permease. (460 aa) |
| | afuC | CP4-6 prophage; Part of the ABC transporter complex FbpABC involved in Fe(3+) ions import. Responsible for energy coupling to the transport system. (348 aa) |
| | fhuB | Iron(3+)-hydroxamate import ABC transporter permease; Part of the ABC transporter complex FhuCDB involved in iron(3+)-hydroxamate import. Responsible for the translocation of the substrate across the membrane. (660 aa) |
| | fhuD | Iron(3+)-hydroxamate import ABC transporter periplasmic binding protein; Part of the ABC transporter complex FhuCDB involved in iron(3+)-hydroxamate import. Binds the iron(3+)-hydroxamate complex and transfers it to the membrane-bound permease. Required for the transport of all iron(3+)-hydroxamate siderophores such as ferrichrome, gallichrome, desferrioxamine, coprogen, aerobactin, shizokinen, rhodotorulic acid and the antibiotic albomycin. (296 aa) |
| | fhuC | Iron(3+)-hydroxamate import ABC transporter ATPase; Part of the ABC transporter complex FhuCDB involved in iron(3+)-hydroxamate import. Responsible for energy coupling to the transport system. (265 aa) |
| | fhuA | Ferrichrome outer membrane transporter; Involved in the uptake of iron in complex with ferrichrome, a hydroxamate-type siderophore. Binds and transports ferrichrome-iron across the outer membrane. In addition to its role in ferrichrome-iron transport, transports the antibiotic albomycin, which is a structural analog of ferrichrome, and acts as a receptor for colicin M, microcin J25 and bacteriophages T1, T5, phi80 and UC-1. The energy source, which is required for all FhuA functions except infection by phage T5, is provided by the inner membrane TonB system. (747 aa) |
| | kefC | Potassium:proton antiporter; Pore-forming subunit of a potassium efflux system that confers protection against electrophiles. Catalyzes K(+)/H(+) antiport. Can also export rubidium, lithium and sodium. (620 aa) |
| | kefF | Potassium-efflux system ancillary protein for KefC, glutathione-regulated; Regulatory subunit of a potassium efflux system that confers protection against electrophiles. Required for full activity of KefC. Shows redox enzymatic activity, but this enzymatic activity is not required for activation of KefC. Can use a wide range of substrates, including electrophilic quinones, and its function could be to reduce the redox toxicity of electrophilic quinones in parallel with acting as triggers for the KefC efflux system. Belongs to the NAD(P)H dehydrogenase (quinone) family. KefF subfamily. (176 aa) |
| | nhaA | Sodium-proton antiporter; Na(+)/H(+) antiporter that extrudes sodium in exchange for external protons. Catalyzes the exchange of 2 H(+) per Na(+). Can mediate sodium uptake when a transmembrane pH gradient is applied. Active at alkaline pH. Activity is strongly down-regulated below pH 6.5; Belongs to the NhaA Na(+)/H(+) (TC 2.A.33) antiporter family. (388 aa) |
| | yaaJ | Putative transporter; Inner membrane transport protein. (476 aa) |
| | nrfE | Heme lyase (NrfEFG) for insertion of heme into c552, subunit NrfE; May be required for the biogenesis of c-type cytochromes. Possible subunit of a heme lyase. (552 aa) |
| | actP | Acetate transporter; Transports acetate. Also able to transport glycolate. (549 aa) |
| | yjcE | Putative cation/proton antiporter. (549 aa) |
| | yjbB | Putative alpha helix protein. (543 aa) |
| | fieF | Ferrous iron and zinc transporter; Iron-efflux transporter responsible for iron detoxification. Also able to transport Zn(2+) in a proton-dependent manner. Belongs to the cation diffusion facilitator (CDF) transporter (TC 2.A.4) family. FieF subfamily. (300 aa) |
| | melB | Melibiose:sodium symporter; Responsible for melibiose and other galactoside transport. It is capable of using hydrogen, sodium, and lithium cations as coupling cations for cotransport, depending on the particular sugar transported (symport system). (473 aa) |
| | yihP | Putative 2,3-dihydroxypropane-1-sulphonate exporter, membrane protein; Could be involved in the export of 2,3-dihydroxypropane-1- sulfonate (DHPS); Belongs to the sodium:galactoside symporter (TC 2.A.2) family. (461 aa) |
| | yihO | Putative sulphoquinovose importer; Could be involved in sulfoquinovose import. (467 aa) |
| | trkH | Potassium transporter; Low-affinity potassium transport system. Interacts with Trk system potassium uptake protein TrkA. Requires TrkE (sapD) for transport activity, 20% more uptake is seen with both SapD and SapF. Transport in the absence of SapD and SapF is dependent on a high membrane potential and a high cytoplasmic ATP concentration, suggesting this protein may be able to interact with other ATP-binding proteins. Can transport potassium and rubidium. (483 aa) |
| | corA | Magnesium/nickel/cobalt transporter; Mediates influx of magnesium ions. Can also mediate cobalt and manganese uptake. Alternates between open and closed states. Activated by low cytoplasmic Mg(2+) levels. Inactive when cytoplasmic Mg(2+) levels are high (By similarity). Belongs to the CorA metal ion transporter (MIT) (TC 1.A.35) family. (316 aa) |
| | kup | Potassium transporter; Responsible for the low-affinity transport of potassium into the cell, with the probable concomitant uptake of protons (symport system). Can also transport cesium; Belongs to the HAK/KUP transporter (TC 2.A.72) family. (622 aa) |
| | yidE | Putative transport protein. (553 aa) |
| | yidK | Putative cotransporter. (571 aa) |
| | cusA | Copper/silver efflux system, membrane component; Part of a cation efflux system that mediates resistance to copper and silver; Belongs to the resistance-nodulation-cell division (RND) (TC 2.A.6) family. (1047 aa) |
| | yicJ | Putative permease. (460 aa) |
| | gltS | Glutamate transporter; Catalyzes the sodium-dependent, binding-protein-independent transport of glutamate. Belongs to the glutamate:Na(+) symporter (ESS) (TC 2.A.27) family. (401 aa) |
| | dppA | Dipeptide/heme ABC transporter periplasmic binding protein; Dipeptide-binding protein of a transport system that can be subject to osmotic shock. DppA is also required for peptide chemotaxis; Belongs to the bacterial solute-binding protein 5 family. (535 aa) |
| | dppB | Dipeptide/heme ABC transporter permease; Part of the binding-protein-dependent transport system for dipeptides; probably responsible for the translocation of the substrate across the membrane; Belongs to the binding-protein-dependent transport system permease family. OppBC subfamily. (339 aa) |
| | dppC | Dipeptide/heme ABC transporter permease; Part of the binding-protein-dependent transport system for dipeptides; probably responsible for the translocation of the substrate across the membrane; Belongs to the binding-protein-dependent transport system permease family. OppBC subfamily. (300 aa) |
| | dppD | Dipeptide/heme ABC transporter ATPas; Part of the binding-protein-dependent transport system for dipeptides. Probably responsible for energy coupling to the transport system. (327 aa) |
| | dppF | Dipeptide/heme ABC transporter ATPas; Part of the binding-protein-dependent transport system for dipeptides. Probably responsible for energy coupling to the transport system; Belongs to the ABC transporter superfamily. (334 aa) |
| | pitA | Phosphate transporter, low-affinity; Low-affinity inorganic phosphate transport. Can also transport arsenate; Belongs to the inorganic phosphate transporter (PiT) (TC 2.A.20) family. Pit subfamily. (499 aa) |
| | nikE | Nickel ABC transporter ATPase; Part of the ABC transporter complex NikABCDE involved in nickel import. Responsible for energy coupling to the transport system. Belongs to the ABC transporter superfamily. Nickel importer (TC 3.A.1.5.3) family. (268 aa) |
| | nikD | Nickel ABC transporter ATPase; Part of the ABC transporter complex NikABCDE involved in nickel import. Responsible for energy coupling to the transport system. Belongs to the ABC transporter superfamily. Nickel importer (TC 3.A.1.5.3) family. (254 aa) |
| | nikC | Nickel ABC transporter permease; Involved in a nickel transport system, probably translocates nickel through the bacterial inner membrane. (277 aa) |
| | nikB | Nickel ABC transporter permease; Involved in a nickel transport system, probably translocates nickel through the bacterial inner membrane. (314 aa) |
| | nikA | Nickel/heme ABC transporter periplasmic binding protein; Involved in a nickel transport system, probably represents the nickel binder. (524 aa) |
| | zntA | Zinc, cobalt and lead efflux system; Confers resistance to zinc, cadmium and lead. Couples the hydrolysis of ATP with the export of zinc, cadmium or lead, with highest activity when the metals are present as metal-thiolate complexes. Can also bind nickel, copper, cobalt and mercury. Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IB subfamily. (732 aa) |
| | feoC | Putative DNA-binding transcriptional regulator; May function as a transcriptional regulator that controls feoABC expression; Belongs to the FeoC family. (78 aa) |
| | feoB | Ferrous iron transporter protein B and GTP-binding protein; Transporter of a GTP-driven Fe(2+) uptake system, probably couples GTP-binding to channel opening and Fe(2+) uptake. A guanine nucleotide-binding protein (G proteins) in which the guanine nucleotide binding site alternates between an active, GTP-bound state and an inactive, GDP- bound state. This protein has fast intrinsic GDP release, mediated by the G5 loop (about residues 149-158). Presumably GTP hydrolysis leads to conformational changes and channel closing. A GDP release mechanism involving a conformational change of the [...] (773 aa) |
| | kefG | Potassium-efflux system ancillary protein for KefB, glutathione-regulated; Regulatory subunit of a potassium efflux system that confers protection against electrophiles. Required for full activity of KefB. (184 aa) |
| | kefB | Potassium:proton antiporter; Pore-forming subunit of a potassium efflux system that confers protection against electrophiles. Catalyzes K(+)/H(+) antiport. Belongs to the monovalent cation:proton antiporter 2 (CPA2) transporter (TC 2.A.37) family. KefB subfamily. (601 aa) |
| | bfr | Bacterioferritin, iron storage and detoxification protein; Iron-storage protein, whose ferroxidase center binds Fe(2+) ions, oxidizes them by dioxygen to Fe(3+), and participates in the subsequent Fe(3+) oxide mineral core formation within the central cavity of the protein complex. The mineralized iron core can contain as many as 2700 iron atoms/24-meric molecule. (158 aa) |
| | trkA | NAD-binding component of TrK potassium transporter; Part of the constitutive potassium transport systems TrkG and TrkH. May regulate the transport activity of TrkG and TrkH systems. Binds to NAD(+) and NADH. (458 aa) |
| | panF | Pantothenate:sodium symporter; Catalyzes the sodium-dependent uptake of extracellular pantothenate; Belongs to the sodium:solute symporter (SSF) (TC 2.A.21) family. (483 aa) |
| | yrbG | Putative calcium/sodium:proton antiporter; Protein involved in calcium:sodium antiporter activity. (325 aa) |
| | sstT | Sodium:serine/threonine symporter; Involved in the import of serine and threonine into the cell, with the concomitant import of sodium (symport system). (414 aa) |
| | fepA | Ferrienterobactin outer membrane transporter; This protein is involved in the initial step of iron uptake by binding ferrienterobactin (Fe-ENT), an iron chelatin siderophore that allows E.coli to extract iron from the environment. FepA also acts as a receptor for colicins B and D. (746 aa) |
| | fes | Enterobactin/ferrienterobactin esterase; Upon internalization, ferric enterobactin is processed via an exquisitely specific pathway that is dependent on FES activity, making iron available for metabolic use; Belongs to the Fes family. (400 aa) |
| | fepE | Regulator of length of O-antigen component of lipopolysaccharide chains; Part of the ferric enterobactin transport system. (377 aa) |
| | fepC | Ferrienterobactin ABC transporter ATPase; Part of the binding-protein-dependent transport system for ferric enterobactin. Probably responsible for energy coupling to the transport system. (271 aa) |
| | fepG | Iron-enterobactin ABC transporter permease; Part of the binding-protein-dependent transport system for ferric enterobactin. Probably responsible for the translocation of the substrate across the membrane. (330 aa) |
| | fepD | Ferrienterobactin ABC transporter permease; Part of the binding-protein-dependent transport system for ferric enterobactin. Probably responsible for the translocation of the substrate across the membrane. (334 aa) |
| | entS | Enterobactin exporter, iron-regulated; Component of an export pathway for enterobactin. Overexpression reduces intracellular arabinose concentrations. (416 aa) |
| | fepB | Ferrienterobactin ABC transporter periplasmic binding protein; Binds ferrienterobactin; part of the binding-protein- dependent transport system for uptake of ferrienterobactin. (318 aa) |
| | fecE | Fe(3+) dicitrate transport ATP-binding protein FecE; Part of the binding-protein-dependent transport system for citrate-dependent Fe(3+). Probably responsible for energy coupling to the transport system. (255 aa) |
| | fecD | Ferric citrate ABC transporter permease; Part of the binding-protein-dependent transport system for citrate-dependent Fe(3+). Probably responsible for the translocation of the substrate across the membrane. (318 aa) |
| | fecC | Ferric citrate ABC transporter permease; Part of the binding-protein-dependent transport system for citrate-dependent Fe(3+). Probably responsible for the translocation of the substrate across the membrane. (332 aa) |
| | fecB | Ferric citrate ABC transporter periplasmic binding protein; Binds citrate-dependent Fe(3+); part of the binding-protein- dependent transport system for uptake of citrate-dependent Fe(3+). (300 aa) |
| | fecA | TonB-dependent outer membrane ferric citrate transporter and signal transducer; FecA is the outer membrane receptor protein in the Fe(3+) dicitrate transport system. (774 aa) |
| | mdtM | Multidrug efflux system protein; Confers resistance to acriflavine, chloramphenicol, norfloxacin, ethidium bromide and TPP; Belongs to the major facilitator superfamily. (410 aa) |
| | fhuF | Ferric iron reductase involved in ferric hydroximate transport; Involved in the reduction of ferric iron in cytoplasmic ferrioxamine B. (262 aa) |
| | kdpF | Potassium ion accessory transporter subunit; Part of the high-affinity ATP-driven potassium transport (or Kdp) system, which catalyzes the hydrolysis of ATP coupled with the electrogenic transport of potassium into the cytoplasm. This subunit may be involved in stabilization of the complex. (29 aa) |
| | kdpC | Potassium translocating ATPase, subunit C; Part of the high-affinity ATP-driven potassium transport (or Kdp) system, which catalyzes the hydrolysis of ATP coupled with the electrogenic transport of potassium into the cytoplasm. This subunit acts as a catalytic chaperone that increases the ATP-binding affinity of the ATP- hydrolyzing subunit KdpB by the formation of a transient KdpB/KdpC/ATP ternary complex. (190 aa) |
| | kdpB | Potassium translocating ATPase, subunit B; Part of the high-affinity ATP-driven potassium transport (or Kdp) system, which catalyzes the hydrolysis of ATP coupled with the electrogenic transport of potassium into the cytoplasm. This subunit is responsible for energy coupling to the transport system. (682 aa) |
| | kdpA | Potassium translocating ATPase, subunit A; Part of the high-affinity ATP-driven potassium transport (or Kdp) system, which catalyzes the hydrolysis of ATP coupled with the electrogenic transport of potassium into the cytoplasm. This subunit binds and transports the potassium across the cytoplasmic membrane. (557 aa) |
| | zitB | Zinc efflux system; Involved in zinc efflux across the cytoplasmic membrane, thus reducing zinc accumulation in the cytoplasm and rendering bacteria more resistant to zinc. It may contribute to zinc homeostasis at low concentrations of zinc, whereas ZntA is required for growth at more toxic concentrations; Belongs to the cation diffusion facilitator (CDF) transporter (TC 2.A.4) family. SLC30A subfamily. (313 aa) |
| | ybhR | Putative ABC transporter permease; Part of the ABC transporter complex YbhFSR that could be involved in efflux of cefoperazone. Probably involved in the translocation of the substrate across the membrane. Belongs to the ABC-2 integral membrane protein family. (368 aa) |
| | ybhS | Putative ABC transporter permease; Part of the ABC transporter complex YbhFSR that could be involved in efflux of cefoperazone. Probably involved in the translocation of the substrate across the membrane. Belongs to the ABC-2 integral membrane protein family. (377 aa) |
| | ybhF | Putative ABC transporter ATPase; Part of the ABC transporter complex YbhFSR that could be involved in efflux of cefoperazone. Probably responsible for energy coupling to the transport system. (578 aa) |
| | fiu | Catecholate siderophore receptor; Involved in the active transport across the outer membrane of iron complexed with catecholate siderophores such as dihydroxybenzoylserine and dihydroxybenzoate. It derives its energy for transport by interacting with the trans-periplasmic membrane protein TonB. Can also transport catechol-substituted cephalosporins. Receptor for microcins M, H47 and E492. (760 aa) |
| | mdfA | Multidrug efflux system protein; Efflux pump driven by the proton motive force. Confers resistance to a broad spectrum of chemically unrelated drugs. Confers resistance to a diverse group of cationic or zwitterionic lipophilic compounds such as ethidium bromide, tetraphenylphosphonium, rhodamine, daunomycin, benzalkonium, rifampicin, tetracycline, puromycin, and to chemically unrelated, clinically important antibiotics such as chloramphenicol, erythromycin, and certain aminoglycosides and fluoroquinolones. Overexpression results in isopropyl-beta-D- thiogalactopyranoside (IPTG) exclusi [...] (410 aa) |
| | ybjL | Putative transport protein. (561 aa) |
| | putP | Proline:sodium symporter; Catalyzes the sodium-dependent uptake of extracellular L- proline. This protein is also capable of using lithium as the transport cation. Also catalyzes the uptake of propionate. (502 aa) |
| | efeO | Iron uptake system component EfeO; Involved in Fe(2+) uptake. Could be an iron-binding and/or electron-transfer component. (375 aa) |
| | efeB | Deferrrochelatase, periplasmic; Involved in the recovery of exogenous heme iron. Extracts iron from heme while preserving the tetrapyrrol ring intact. Also displays peroxidase activity on guaiacol in vitro. (423 aa) |
| | fhuE | Ferric-rhodotorulic acid outer membrane transporter; Required for the uptake of Fe(3+) via coprogen, ferrioxamine B, and rhodotorulic acid. (729 aa) |
| | nhaB | Sodium:proton antiporter; Na(+)/H(+) antiporter that extrudes sodium in exchange for external protons. Catalyzes the exchange of 3 H(+) per 2 Na(+). Has a high affinity for sodium, but can also transport lithium. Activity is weakly pH-dependent. Essential for regulation of intracellular pH under alkaline conditions. (513 aa) |
| | cvrA | Putative cation/proton antiporter; K(+)/H(+) antiporter that extrudes potassium in exchange for external protons and maintains the internal concentration of potassium under toxic levels (By similarity). Participates in control of cell volume in low-osmolarity conditions; Belongs to the monovalent cation:proton antiporter 1 (CPA1) transporter (TC 2.A.36) family. NhaP2 subfamily. (578 aa) |
| | chaA | Calcium/sodium:proton antiporter; Sodium exporter that functions mainly at alkaline pH. Can also function as a potassium/proton and calcium/proton antiporter at alkaline pH. Does not play a major role in calcium export. (366 aa) |
| | kch | Voltage-gated potassium channel; K(+)-specific ion channel. May play a role in the defense against osmotic shock. (417 aa) |
| | tonB | Membrane spanning protein in TonB-ExbB-ExbD transport complex; Interacts with outer membrane receptor proteins that carry out high-affinity binding and energy dependent uptake into the periplasmic space of specific substrates such as cobalamin, and various iron compounds (such as iron dicitrate, enterochelin, aerobactin, etc.). In the absence of TonB these receptors bind their substrates but do not carry out active transport. TonB also interacts with some colicins and is involved in the energy-dependent, irreversible steps of bacteriophages phi 80 and T1 infection. It could act to tran [...] (239 aa) |
| | sapD | Antimicrobial peptide ABC transporter ATPase; Part of a putrescine export transport system, does not play a role in resistance to antimicrobial peptides. Stimulates K(+)-uptake proteins TrkG and TrkH to import K(+), may act via ATP-binding rather than ATP hydrolysis. (330 aa) |
| | mppA | Murein tripeptide (L-ala-gamma-D-glutamyl-meso-DAP) transporter subunit; Essential for the uptake of the murein peptide L-alanyl- gamma-D-glutamyl-meso-diaminopimelate. Also transports some alpha- linked peptides such as Pro-Phe-Lys with low affinity. The transport is effected by the oligopeptide permease system; Belongs to the bacterial solute-binding protein 5 family. (537 aa) |
| | ydaN | Putative Zn(II) transporter; Mediates efflux of zinc ions. (327 aa) |
| | trkG | Rac prophage; Low-affinity potassium transport system. Interacts with Trk system potassium uptake protein TrkA. Requires TrkE (sapD) for maximal transport activity, low activity is seen in its absence; no further stimulation is seen with SapF. Transport in the absence of SapD is dependent on a high membrane potential and a high cytoplasmic ATP concentration, suggesting this protein may be able to interact with other ATP-binding proteins. Can transport potassium and rubidium. (485 aa) |
| | yncD | Putative iron outer membrane transporter; Probable receptor, TonB-dependent. (700 aa) |
| | ydfK | Cold shock protein YdfK; Cryptic prophage Qin/Kim. (77 aa) |
| | mdtK | Multidrug efflux system transporter; Multidrug efflux pump that probably functions as a Na(+)/drug antiporter. Confers resistance to many drugs such as fluoroquinolones (norfloxacin, ciprofloxacin, enoxacin) and tetraphenylphosphonium ion (TPP). Also to deoxycholate, doxorubicin, trimethoprim, chloramphenicol, fosfomycin, ethidium bromide and benzalkonium. Also able to export peptides; when overexpressed, allows cells deleted for multiple peptidases (pepA, pepB, pepD and pepN) to grow in the presence of dipeptides Ala-Gln or Gly-Tyr which otherwise inhibit growth. Cells overexpressing [...] (457 aa) |
