Protein target profile

VK055_0614

aromatic amino acid exporter

Genome: KpATCC43816 Gene: AIK79238.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GU04
Length 292
Pocket druggability 0.975
Direct ligand evidence 0 51 total records
Functional annotation 0 EC 2 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
1.8% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
N
DEG identity (%)
0.0 Higher values support similarity to known essential genes.

Localization

Localization
CytoplasmicMembrane

Structure confidence

ColabFold pLDDT
95.87 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

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 0.975
Structure A0A0H3GU04
Pocket Pocket 1
P2Rank 0.99
Structure A0A0H3GU04
Pocket Pocket 1
ColabFold model
FPocket 0.965 · Pocket 1
P2Rank 0.99 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 86 / 4744 genomes with a hit
Prevalence 1.8%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MEKKRATTIGFAAIILWSTMVGLIRGVSEGLGAVGGAAMIYSLSGLLLIFTVGFPNLRQIPRRYLLAGSVLFVSYEICLALSLGYAASRQQAIEVGMVNYLWPSLTILFAILFNGQKSSWLVIPGLILALLGVGWVLGGEHGLQPDEIISNVISSPLSYLLAFVGAFIWAAYCTVTAKYARGKNAITLFVLLTALTLWLKFLASDQPPMLFSWPVVIKLMTVSVALGLAYAAWNVGILHGNVSLLAAASYFTPVLSSALAAILLSATLSWSFWQGAGMVCLGSLLCWYATRR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

2 GO

Gene Ontology (GO)

2
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

36 records
Show feature table
Start End DB Term Name
87 91 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
138 156 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
157 177 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
7 24 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
7 26 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
213 235 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
184 203 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
149 171 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
204 214 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
291 292 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
272 290 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
270 289 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
158 285 Pfam PF00892 EamA-like transporter family
158 285 InterPro IPR000620 EamA domain
92 113 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
114 119 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
190 289 SUPERFAMILY SSF103481 Multidrug resistance efflux transporter EmrE
53 63 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
242 264 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
184 203 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
120 137 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
64 86 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
234 244 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
267 271 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
30 52 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
178 183 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
4 290 PANTHER PTHR42920 OS03G0707200 PROTEIN-RELATED
48 140 SUPERFAMILY SSF103481 Multidrug resistance efflux transporter EmrE
120 139 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
65 87 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
25 29 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
245 266 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
30 52 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
215 233 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
91 113 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 6 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.

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 · FPocket

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

Site 1 FPocket #1
0.975
Likely same site as P2Rank 1 4.7 Å 22 shared residues 96% of smaller site
Unusual size
Show in viewer
Surrounding area
Site 2 FPocket #6
0.378
Likely same site as P2Rank 1 5.2 Å 16 shared residues 89% of smaller site
Unusual size
Show in viewer
Surrounding area

Binding pockets · P2Rank

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

Site 1 P2Rank #1
0.99
Likely same site as FPocket 1 4.7 Å 22 shared residues 96% of smaller site
Show in viewer
Surrounding area
Site 2 P2Rank #2
0.286
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Surrounding area
Site 3 P2Rank #3
0.029
Show in viewer
Surrounding area
Site 4 P2Rank #4
0.002
Show in viewer
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_A0A0H3GU04
AlphaFold DB full sequence Viewing
ColabFold VK055_0614
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.

51 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 1 records from similar proteins
Structural ligands 1 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
OLC PDB via homolog 356.5 Da · LogP 4.92 · TPSA 66.8 Open detail RCSB PDB
ZINC1501016272 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1501016273 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1501016315 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1501016316 ZINC proposed compound · Tanimoto 1.000 Detail ZINC

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
OLC RCSB PDB D7A5Q8 356.5 Da LogP 4.92 TPSA 66.8 ✓ Ro5 ✓ Clean CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](CO)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.