Protein target profile

KP13_02441

Efflux pump membrane transporter OqxB

Genome: KpKP13 Gene: oqxB AHE43122.1 3D evidence: Experimental + ColabFold model UniProt U5U6L7
Length 1050
Pocket druggability 0.998
Direct ligand evidence 2 137 total records
Functional annotation 0 EC 8 GO
Target summary

Strong target candidate with converging metabolic, structural and chemical evidence.

Automated synthesis of the evidence currently loaded. Review the underlying records before prioritizing this protein.

Terms and data sources used on this page

PDB: experimentally determined structures from the Protein Data Bank. These are the strongest structural evidence, but may cover only part of the protein.

AlphaFold DB model: a precomputed predicted structure downloaded from AlphaFold Database/UniProt, not an experiment performed here.

ColabFold model: a predicted structure generated for this workspace; interpret it with coverage and confidence.

pLDDT: confidence score for predicted structures. High values support local geometry; low values mean the region should not drive pocket interpretation.

FPocket / P2Rank: software tools that predict possible ligand-binding pockets on a 3D structure. They are useful screening signals, not experimental validation.

Druggability: a pocket-based estimate of whether a small molecule could bind productively. It does not mean a drug already exists.

PDB ligand: a compound observed in an experimental structure. Direct same-protein records are stronger than homolog-transferred records.

ChEMBL: a public database of measured compound bioactivity. Direct entries are stronger than entries transferred from similar proteins.

ZINC: a purchasable-compound database. Here it marks proposed candidates from chemical similarity, not measured binders.

LigQ / LigQ_2: an internal Target pipeline step that gathers PDB, ChEMBL, and ZINC ligand evidence for each protein.

Off-target: sequence similarity to proteins we prefer not to hit, such as human proteins or beneficial gut microbiome proteins.

DEG: Database of Essential Genes. A match suggests the protein resembles genes known to be essential in other organisms.

Roary / CoreCruncher: pan-genome tools used to decide whether a gene is core across analyzed strains or accessory/strain-specific.

EC / GO: functional annotations: EC describes enzyme reactions; GO describes biological process, molecular function, or cellular component.

KEGG pathway: a curated metabolic route label used here to group reactions imported from the metabolic model.

Chokepoint: a metabolic reaction that is the only producer or consumer of a metabolite in the imported model.

Prioritization evidence

Selectivity, essentiality, structural confidence, conservation, and predicted binding-site evidence.

Off-target risk

Human off-target
No hit
Gut microbiome similarity
1.5% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
41.738 Higher values support similarity to known essential genes.
DEG E-value
0.0 Smaller values mean stronger essential-gene similarity.

Localization

Localization
CytoplasmicMembrane

Structure confidence

ColabFold pLDDT
91.61 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

PDB experimental structure

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket 0.998
Structure 7CZ9
Pocket Pocket 1
P2Rank 0.977
Structure 8ZXS
Pocket Pocket 1
ColabFold model
FPocket 0.948 · Pocket 3
P2Rank 0.973 · Pocket 1
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 70 / 4744 genomes with a hit
Prevalence 1.5%

Cross-references

External database identifiers for this protein, its structures, ligands, and metabolic reactions.

Sequence

Primary amino-acid sequence viewer.

MDFSRFFIDRPIFAAVLSILIFITGLIAIPLLPVSEYPDVVPPSVQVRAEYPGANPKVIAETVATPLEEAINGVENMMYMKSVAGSDGVLVTTVTFRPGTDPDQAQVQVQNRVAQAEARLPEDVRRLGITTQKQSPTLTLVVHLFSPNGKYDSLYMRNYATLKVKDELARLPGVGQIQIFGSGEYAMRVWLDPNKVAARGLTASDVVTAMQEQNVQVSAGQLGAEPLPQESDFLISINAQGRLHTEEEFGNIILKTAQDGSLVRLRDVARIEMGSGSYALRSQLNNKDAVGIGIFQSPGANAIDLSNAVRAKMAELATRFPEDMQWAAPYDPTVFVRDSIRAVVQTLLEAVVLVVLVVILFLQTWRASIIPLIAVPVSVVGTFSILYLLGFSLNTLSLFGLVLAIGIVVDDAIVVVENVERNIEEGLAPLAAAHQAMREVSGPIIAIALVLCAVFVPMAFLSGVTGQFYKQFAVTIAISTVISAINSLTLSPALAALLLKPHGAKKDLPTRLIDRLFGWIFRPFNRFFLRSSNGYQGLVSKTLGRRGAVFAVYLLLLCAAGVMFKVVPGGFIPTQDKLYLIGGVKMPEGSSLARTDAVIRKMSEIGMNTEGVDYAVAFPGLNALQFTNTPNTGTVFFGLKPFDQRKHTAAEINAEINAKIAQIQQGFGFSILPPPILGLGQGSGYSLYIQDRGGLGYGALQSAVNAMSGAIMQTPGMHFPISTYQANVPQLDVQVDRDKAKAQGVSLTELFGTLQTYLGSSYVNDFNQFGRTWRVMAQADGPYRESVEDIANLRTRNNQGEMVPIGSMVNISTTYGPDPVIRYNGYPAADLIGDADPRVLSSSQAMTHLEELSKQILPNGMNIEWTDLSFQQATQGNTALIVFPVAVLLAFLVLAALYESWTLPLAVILIVPMTMLSALFGVWLTGGDNNVFVQVGLVVLMGLACKNAILIVEFARELEIQGKGIMEAALEACRLRLRPIVMTSIAFIAGTIPLILGHGAGAEVRGVTGITVFSGMLGVTLFGLFLTPVFYVTLRKLVTRRKPVQEDLPA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

8 GO

Gene Ontology (GO)

8
  • GO:0022857 Enables the transfer of a substance, usually a specific substance or a group of related substances, from one side of a membrane to the other.
  • GO:0015562 Enables the transfer of a specific substance or related group of substances from the inside of the cell to the outside of the cell across a membrane.
  • GO:0042908 The directed movement of a xenobiotic into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. A xenobiotic is a compound foreign to the organism exposed to it. It may be synthesized by another organism (like ampicilin) or it can be a synthetic chemical.
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
  • GO:0042910 Enables the directed movement of a xenobiotic from one side of a membrane to the other. A xenobiotic is a compound foreign to the organism exposed to it. It may be synthesized by another organism (like ampicilin) or it can be a synthetic chemical.
  • GO:0009636 Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a toxic stimulus.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

83 records
Show feature table
Start End DB Term Name
1008 1032 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
731 819 Gene3D G3DSA:3.30.2090.10 Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains
731 819 InterPro IPR027463 Multidrug efflux transporter AcrB TolC docking domain, DN/DC subdomains
905 927 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
396 418 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
679 879 Gene3D G3DSA:3.30.70.1440 Multidrug efflux transporter AcrB pore domain
476 498 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
997 1007 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
472 499 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
3 1044 NCBIfam TIGR00915 efflux RND transporter permease subunit
3 1044 InterPro IPR004764 Multidrug resistance protein MdtF-like
3 1034 Pfam PF00873 AcrB/AcrD/AcrF family
3 1034 InterPro IPR001036 Acriflavin resistance protein
500 547 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
12 34 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
40 827 Gene3D G3DSA:3.30.70.1430 Multidrug efflux transporter AcrB pore domain
394 418 PRINTS PR00702 Acriflavin resistance protein family signature
394 418 InterPro IPR001036 Acriflavin resistance protein
562 579 PRINTS PR00702 Acriflavin resistance protein family signature
562 579 InterPro IPR001036 Acriflavin resistance protein
339 362 PRINTS PR00702 Acriflavin resistance protein family signature
339 362 InterPro IPR001036 Acriflavin resistance protein
366 387 PRINTS PR00702 Acriflavin resistance protein family signature
366 387 InterPro IPR001036 Acriflavin resistance protein
447 470 PRINTS PR00702 Acriflavin resistance protein family signature
447 470 InterPro IPR001036 Acriflavin resistance protein
38 56 PRINTS PR00702 Acriflavin resistance protein family signature
38 56 InterPro IPR001036 Acriflavin resistance protein
472 495 PRINTS PR00702 Acriflavin resistance protein family signature
472 495 InterPro IPR001036 Acriflavin resistance protein
10 34 PRINTS PR00702 Acriflavin resistance protein family signature
10 34 InterPro IPR001036 Acriflavin resistance protein
631 645 PRINTS PR00702 Acriflavin resistance protein family signature
631 645 InterPro IPR001036 Acriflavin resistance protein
905 925 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
526 1032 Gene3D G3DSA:1.20.1640.10 Multidrug efflux transporter AcrB transmembrane domain
343 362 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
461 471 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
568 878 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
40 140 FunFam G3DSA:3.30.70.1430:FF:000001 Efflux pump membrane transporter
548 567 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
876 898 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
550 572 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 1044 PANTHER PTHR32063 -
1 1044 InterPro IPR001036 Acriflavin resistance protein
41 134 SUPERFAMILY SSF82693 Multidrug efflux transporter AcrB pore domain; PN1, PN2, PC1 and PC2 subdomains
420 439 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
33 341 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
975 997 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1033 1050 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
342 362 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
183 281 FunFam G3DSA:3.30.2090.10:FF:000001 Efflux pump membrane transporter
729 815 SUPERFAMILY SSF82714 Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains
729 815 InterPro IPR027463 Multidrug efflux transporter AcrB TolC docking domain, DN/DC subdomains
396 419 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
931 954 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
439 461 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
299 499 SUPERFAMILY SSF82866 Multidrug efflux transporter AcrB transmembrane domain
391 395 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
12 32 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
899 904 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
580 678 Gene3D G3DSA:3.30.70.1430 Multidrug efflux transporter AcrB pore domain
575 678 SUPERFAMILY SSF82693 Multidrug efflux transporter AcrB pore domain; PN1, PN2, PC1 and PC2 subdomains
926 930 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
139 333 SUPERFAMILY SSF82693 Multidrug efflux transporter AcrB pore domain; PN1, PN2, PC1 and PC2 subdomains
975 996 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
135 334 Gene3D G3DSA:3.30.70.1320 Multidrug efflux transporter AcrB pore domain like
879 898 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
369 390 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
955 974 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
9 525 Gene3D G3DSA:1.20.1640.10 Multidrug efflux transporter AcrB transmembrane domain
1 11 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
363 368 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
182 281 Gene3D G3DSA:3.30.2090.10 Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains
182 281 InterPro IPR027463 Multidrug efflux transporter AcrB TolC docking domain, DN/DC subdomains
324 510 FunFam G3DSA:1.20.1640.10:FF:000001 Efflux pump membrane transporter
369 391 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
932 954 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1012 1034 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
813 1037 SUPERFAMILY SSF82866 Multidrug efflux transporter AcrB transmembrane domain
185 275 SUPERFAMILY SSF82714 Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains
185 275 InterPro IPR027463 Multidrug efflux transporter AcrB TolC docking domain, DN/DC subdomains
440 460 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.

3D structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; AlphaFold DB and ColabFold models typically cover the full protein but remain computational predictions.

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Pocket score High Medium Low
How colors and pocket overlays are used
Uniform protein color marks the displayed model as a single molecular object.
Experimental PDB structures may be colored by chain to distinguish subunits or copies present in the file.
Pocket colors and alpha spheres are evidence overlays for predicted binding cavities; they are not alternative protein chains.
'Alpha spheres' is FPocket's own cavity-shape geometry, imported when available and aligned with the loaded structure.
'Pocket atoms'/'Predicted site atoms' show the pocket's residue atoms instead: P2Rank reports residues rather than alpha spheres, and FPocket falls back to this when alpha-sphere geometry is unavailable or doesn't align.
'No pocket geometry' means neither alpha spheres nor residue-position data could be found for that pocket; the layer just highlights the same residues as 'Nearby residues'.
Pocket details Inspect a specific pocket, or open the full viewer

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.977
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Surrounding area
Site 2 P2Rank #2
0.92
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Surrounding area
Site 3 P2Rank #3
0.9
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Surrounding area
Site 4 P2Rank #4
0.472
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Surrounding area
Site 5 P2Rank #5
0.372
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Surrounding area
All structural evidence 3 experimental · 1 predicted

Structural evidence

3 + 1

Experimental PDB entries plus predicted AlphaFold DB or ColabFold models. Click Switch to display a different loaded structure in the viewer.

Entry Method Resolution Chain Coverage Links Status
PDB 8ZXS
X-ray 2.75 Å A,B,C
100.0% 1-1050
Viewing
PDB 7CZ9
X-ray 1.85 Å A,B,C,D,E,F
99.2% 1-1042
Loaded
PDB 9FDZ
X-ray A Loaded
ColabFold KP13_02441
ColabFold full sequence Loaded

Ligand evidence

Ligands grouped by evidence source. PDB ligands keep the source crystal visible, and loaded crystals can be opened directly in the structure viewer.

137 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 2 same-protein records
Transferred evidence 85 records from similar proteins
Structural ligands 34 2 loaded crystals
Measured bioactivity 53 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
LMT PDB co-crystal 510.6 Da · LogP -0.45 · TPSA 178.5 Open detail RCSB PDB
PTY PDB co-crystal Detail RCSB PDB
3PE PDB via homolog Detail RCSB PDB
3YI PDB via homolog Detail RCSB PDB
5QF PDB via homolog Detail RCSB PDB

Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in Target, use Open crystal to inspect it in the structure viewer.

Show only:
Ligand Source crystal MW · LogP · TPSA Lipinski PAINS SMILES
LMT RCSB PDB 510.6 Da LogP -0.45 TPSA 178.5 3 viol. ✓ Clean CCCCCCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1…
PTY RCSB PDB 734.1 Da LogP 11.67 TPSA 134.4 2 viol. ✓ Clean CCCCCCCCCCCCCCCCCCCC(=O)O[C@H](COC(=O)CCCCCCCCC…

PDB and ChEMBL records on this protein are shown in full. ChEMBL records from similar proteins are capped at the top 100 per protein (by pchembl) and ZINC at the top 50 (Tanimoto ≥ 0.5). ADME columns are descriptor-based screening flags, not experimental toxicity results.