KpATCC43816 Protein target profile

drug resistance transporter, Bcr/CflA subfamily protein

Accession: VK055_4906

Gene: AIK83432.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3H0W3
Length 398
Pocket druggability (P2Rank · AlphaFold DB model) 0.884
Direct ligand evidence 0 154 total records
Functional annotation 0 EC 8 GO
Target summary

Promising target candidate with multiple supporting evidence streams.

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
2.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
89.91 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

P2Rank's binding-site probability is the primary druggability signal shown across the app; FPocket's druggability score is shown alongside it for comparison. Both estimate small-molecule pocket quality after applying the curated structure priority — neither is experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

Druggability (P2Rank) 0.884
Structure A0A0H3H0W3
Pocket Pocket 1
Druggability (FPocket) 0.673
Structure A0A0H3H0W3
Pocket Pocket 20
ColabFold model
P2Rank 0.861 · Pocket 1
FPocket 0.851 · Pocket 20
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 105 / 4744 genomes with a hit
Prevalence 2.2%

Metabolic context

Reactions catalyzed, pathway membership, and centrality in the genome-scale metabolic network.

This protein is not associated with the imported metabolic network for this genome.

Browse the genome's metabolic network

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MTLKQNSSLGIVFILGLLAMLMPLSIDMYLPALPVIAAQYNVPDGSAQMTLSTYILGFALGQLLYGPMADSLGRKPVILGGTLVFAAAAVACALSQTVDMLIVMRFFHGLAAAAASVVINALMRDIYPKDEFSRMMSFVMLVTTIAPLVAPMVGGAVLVWFSWHAIFWILALVALLASLMIGLFIRETLPAERRQPFHLRTTLGNFATLFRHKRVLSYMLASGFSFAGMFSFLSAGPFVYININHVAPQHFGYYFALNIVFLFLMTMFNSRFVRRVGALRMFRAGLWIQFAIAVWMVVCALLDVGFWSLVIGVAAFVGCVSMVSSNAMAVILDEFPHMAGTASSLAGTFRFGIGAIIGALLSMATFTTAWPMLISIAFCATCSIFFSLYASRRRKIAR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

8 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

8
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:1990961 A process that reduces or removes the toxicity of a xenobiotic by exporting it outside the cell.
  • 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:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
  • 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: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:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
  • GO:0015385 Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: Na+(out) + H+(in) = Na+(in) + H+(out).

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

53 records
Show feature table
Start End DB Term Name
186 214 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
285 307 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
273 283 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
370 390 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
124 134 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
7 26 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
10 395 SUPERFAMILY SSF103473 MFS general substrate transporter
10 395 InterPro IPR036259 MFS transporter superfamily
52 188 NCBIfam TIGR00880 efflux MFS transporter
52 188 InterPro IPR004734 Multidrug resistance protein
47 65 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
311 330 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
215 241 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 37 Phobius SIGNAL_PEPTIDE Signal peptide region
66 76 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
391 398 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
77 96 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
368 390 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
135 160 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
11 392 PANTHER PTHR23502 MAJOR FACILITATOR SUPERFAMILY
253 272 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
11 395 ProSiteProfiles PS50850 Major facilitator superfamily (MFS) profile.
11 395 InterPro IPR020846 Major facilitator superfamily domain
8 390 NCBIfam TIGR00710 Bcr/CflA family efflux MFS transporter
8 390 InterPro IPR004812 Drug resistance transporter Bcr/CmlA subfamily
304 308 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
242 252 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
12 390 CDD cd17320 MFS_MdfA_MDR_like
365 369 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
102 123 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
284 303 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
76 98 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 7 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
309 332 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
137 159 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
16 359 Pfam PF07690 Major Facilitator Superfamily
16 359 InterPro IPR011701 Major facilitator superfamily
8 19 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
333 343 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
20 37 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
38 46 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
102 124 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
344 364 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
219 241 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
251 273 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
11 389 FunFam G3DSA:1.20.1720.10:FF:000005 Bcr/CflA family efflux transporter
166 185 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
50 69 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
342 364 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
163 185 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
161 165 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
11 389 Gene3D G3DSA:1.20.1720.10 Multidrug resistance protein D
97 101 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.

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

Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Pocket 1 P2Rank #1
0.884
Likely same site as FPocket 21 4.3 Å 12 shared residues 92% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.485
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Surrounding area
Pocket 3 P2Rank #3
0.202
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Surrounding area
Pocket 4 P2Rank #4
0.019
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Surrounding area
Pocket 5 P2Rank #5
0.018
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Surrounding area

Binding pockets · FPocket

Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4

Pocket 1 FPocket #20
0.673
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Surrounding area
Pocket 2 FPocket #5
0.504
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Surrounding area
Pocket 3 FPocket #18
0.468
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Surrounding area
Pocket 4 FPocket #21
0.245
Likely same site as P2Rank 1 4.3 Å 12 shared residues 92% of smaller site
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Surrounding area
All structural evidence 0 experimental · 2 predicted

Structural evidence

0 + 2

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
AlphaFold DB AF_A0A0H3H0W3
AlphaFold DB full sequence Viewing
ColabFold VK055_4906
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.

154 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 104 records from similar proteins
Structural ligands 4 0 loaded crystals
Measured bioactivity 100 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
CLM PDB via homolog 323.1 Da · LogP 0.91 · TPSA 112.7 Open detail RCSB PDB
DXC PDB via homolog Detail RCSB PDB
KHJ PDB via homolog Detail RCSB PDB
LDA PDB via homolog Detail RCSB PDB
CHEMBL333888 ChEMBL via homolog · pchembl 6.52 (~302.0 nM) Detail ChEMBL

Structural evidence inferred from similar proteins. The source crystal indicates where the ligand was observed; the UniProt column identifies the homologous protein carrying that ligand.

Show only:
Ligand Source crystal UniProt (homolog) MW · LogP · TPSA Lipinski PAINS SMILES
CLM RCSB PDB P0AEY8 323.1 Da LogP 0.91 TPSA 112.7 ✓ Ro5 ✓ Clean c1cc(ccc1[C@H]([C@@H](CO)NC(=O)C(Cl)Cl)O)[N+](=…
DXC RCSB PDB P0AEY8 392.6 Da LogP 4.48 TPSA 77.8 ✓ Ro5 ✓ Clean C[C@H](CCC(=O)O)[C@H]1CC[C@@H]2[C@@]1([C@H](C[C…
KHJ RCSB PDB P0AEY8 186.3 Da LogP 1.00 TPSA 7.8 ✓ Ro5 ✓ Clean C[n+]1ccc(cc1)c2cc[n+](cc2)C
LDA RCSB PDB P0AEY8 229.4 Da LogP 4.48 TPSA 23.1 ✓ Ro5 ✓ Clean CCCCCCCCCCCC[N+](C)(C)[O-]

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.

Cross-references

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

Chemistry

ChEMBL CHEMBL333888 ChEMBL CHEMBL339030 ChEMBL CHEMBL122262 ChEMBL CHEMBL331492 ChEMBL CHEMBL420159 ChEMBL CHEMBL339999 ChEMBL CHEMBL421456 ChEMBL CHEMBL123933 ChEMBL CHEMBL124794 ChEMBL CHEMBL125490 ChEMBL CHEMBL338009 ChEMBL CHEMBL122174 ChEMBL CHEMBL334080 ChEMBL 4YH ChEMBL 8PR ChEMBL CEL ChEMBL CHEMBL1084589 ChEMBL CHEMBL1085319 ChEMBL CHEMBL1085320 ChEMBL CHEMBL1087296 ChEMBL CHEMBL12089 ChEMBL CHEMBL1304422 ChEMBL CHEMBL1304489 ChEMBL CHEMBL141664 ChEMBL CHEMBL142493 ChEMBL CHEMBL144721 ChEMBL CHEMBL145203 ChEMBL CHEMBL145666 ChEMBL CHEMBL148216 ChEMBL CHEMBL1630217 ChEMBL CHEMBL1630218 ChEMBL CHEMBL1642586 ChEMBL CHEMBL1651180 ChEMBL CHEMBL1891367 ChEMBL CHEMBL2048632 ChEMBL CHEMBL2158992 ChEMBL CHEMBL2158993 ChEMBL CHEMBL2158994 ChEMBL CHEMBL2158995 ChEMBL CHEMBL2158996 ChEMBL CHEMBL2158997 ChEMBL CHEMBL2158998 ChEMBL CHEMBL2158999 ChEMBL CHEMBL2159000 ChEMBL CHEMBL2159001 ChEMBL CHEMBL2159002 ChEMBL CHEMBL223643 ChEMBL CHEMBL224214 ChEMBL CHEMBL290185 ChEMBL CHEMBL328060 ChEMBL CHEMBL358518 ChEMBL CHEMBL3741903 ChEMBL CHEMBL4161736 ChEMBL CHEMBL4162139 ChEMBL CHEMBL4163342 ChEMBL CHEMBL4164426 ChEMBL CHEMBL4164737 ChEMBL CHEMBL4167074 ChEMBL CHEMBL4168315 ChEMBL CHEMBL4168943 ChEMBL CHEMBL4169246 ChEMBL CHEMBL4169284 ChEMBL CHEMBL4170063 ChEMBL CHEMBL4170066 ChEMBL CHEMBL4171147 ChEMBL CHEMBL4171241 ChEMBL CHEMBL4172225 ChEMBL CHEMBL4172372 ChEMBL CHEMBL4172781 ChEMBL CHEMBL4174957 ChEMBL CHEMBL4175014 ChEMBL CHEMBL4175717 ChEMBL CHEMBL4176162 ChEMBL CHEMBL422481 ChEMBL CHEMBL434066 ChEMBL CHEMBL4483762 ChEMBL CHEMBL4530442 ChEMBL CHEMBL463095 ChEMBL CHEMBL469266 ChEMBL CHEMBL472329 ChEMBL CHEMBL4764996 ChEMBL CHEMBL487602 ChEMBL CHEMBL5180154 ChEMBL CHEMBL5183287 ChEMBL CHEMBL5184912 ChEMBL CHEMBL5189886 ChEMBL CHEMBL5197459 ChEMBL CHEMBL519793 ChEMBL CHEMBL5199021 ChEMBL CHEMBL520369 ChEMBL CHEMBL539923 ChEMBL CHEMBL5402153 ChEMBL CHEMBL5409878 ChEMBL CHEMBL5427043 ChEMBL CHEMBL5433605 ChEMBL CHEMBL555456 ChEMBL CHEMBL772 ChEMBL CHEMBL89401 ChEMBL CHEMBL91638 ChEMBL Z80