KpATCC43816 Protein target profile

amino acid permease family protein

Accession: VK055_1011

Gene: AIK79634.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GP42
Length 476
Pocket druggability (P2Rank · AlphaFold DB model) 0.79
Direct ligand evidence 0 66 total records
Functional annotation 0 EC 4 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
Hit
Human identity (%)
24.009 Lower values reduce human off-target concern.
Human E-value
5.15e-08
Gut microbiome similarity
2.7% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
87.13 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) 0.79
Structure A0A0H3GP42
Pocket Pocket 1
Druggability (FPocket) 0.914
Structure A0A0H3GP42
Pocket Pocket 12
ColabFold model
P2Rank 0.528 · Pocket 1
FPocket 0.792 · Pocket 23
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 129 / 4744 genomes with a hit
Prevalence 2.7%

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.

MTEHQHQASPAAGGEGASQLKRGLSARHIQMIALGGAIGTGLFMGAGRNIAVAGTSILVIYVLVGFFTYMVMRAMGELLLTRHDYRSFADFVGEYLGPQASFYLGWTYWLSWVVTCIADVVVCGSYMQYWFPELSAWMPALSMLAILFLLNLLSVKMFGEAEFWFALIKVITIIALIGTGGWMIATGWTSPDGVTASLSHLTDPTAFMPHGITGFFAGFQIAIFSFTGIELLGTMTAETRDPQRILPKAINALPLRIIIFYLLSMVVIIAVASWPGVSAETSPFVTLFAKAGLPAAAAVINFVALTSAMSSANSGVFSSTRMLYGLSVEKHAHWQFRILSRSTRIPVRSLLFSCFCMLIGTLLLFLVPNVMTLFTIVSTLAAIMVVFSWGMILVAYLVYRRQRPDLHAGSIFKMPAGVVMSWGSLLFFAFSIFIMIFDPDTLLALLASPLWFIALWGFWKLKQRREGQLQLDNQSA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

4
  • 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:0006865 The directed movement of amino acids, organic acids containing one or more amino substituents, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

43 records
Show feature table
Start End DB Term Name
47 51 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
345 367 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
73 108 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
24 46 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
442 459 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
253 275 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
276 294 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
233 252 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
189 207 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
208 232 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
29 46 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
166 188 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
295 317 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
155 165 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
376 398 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
50 72 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
2 474 PIRSF PIRSF006060 AA_transporter
400 410 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
136 154 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
368 372 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
19 470 FunFam G3DSA:1.20.1740.10:FF:000001 Amino acid permease
1 28 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
52 72 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
437 441 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
108 130 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
19 472 Gene3D G3DSA:1.20.1740.10 Amino acid/polyamine transporter I
460 476 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
253 275 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
442 459 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
325 344 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
295 324 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
418 437 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
131 135 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
16 468 PANTHER PTHR43495 GABA PERMEASE
28 458 Pfam PF00324 Amino acid permease
28 458 InterPro IPR004841 Amino acid permease/ SLC12A domain
134 156 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
373 399 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
211 233 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
109 130 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
411 436 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
350 372 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.

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
0.79
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Surrounding area
Pocket 2 P2Rank #2
0.352
Likely same site as FPocket 10 3.5 Å 15 shared residues 100% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.24
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Surrounding area
Pocket 4 P2Rank #4
0.046
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Surrounding area
Pocket 5 P2Rank #5
0.04
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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 #12
0.914 Unusual size
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Surrounding area
Pocket 2 FPocket #21
0.443 Unusual size
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Surrounding area
Pocket 3 FPocket #10
0.314 Unusual size
Likely same site as P2Rank 2 3.5 Å 15 shared residues 100% of smaller site
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_A0A0H3GP42
AlphaFold DB full sequence Viewing
ColabFold VK055_1011
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.

66 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 16 records from similar proteins
Structural ligands 2 0 loaded crystals
Measured bioactivity 14 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
CLR PDB via homolog 386.7 Da · LogP 7.39 · TPSA 20.2 Open detail RCSB PDB
OLC PDB via homolog Detail RCSB PDB
CHEMBL1417204 ChEMBL via homolog · pchembl 6.52 (~302.0 nM) Detail ChEMBL
CHEMBL1425137 ChEMBL via homolog · pchembl 6.24 (~575.4 nM) Detail ChEMBL
CHEMBL1492648 ChEMBL via homolog · pchembl 6.18 (~660.7 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
CLR RCSB PDB Q5L1G5 386.7 Da LogP 7.39 TPSA 20.2 1 viol. ✓ Clean CC(C)CCC[C@@H](C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3…
OLC RCSB PDB Q5L1G5 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.

Cross-references

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