KpATCC43816 Protein target profile

transporter, betaine/carnitine/choline transporter family protein

Accession: VK055_1463

Gene: AIK80084.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GL61
Length 535
Pocket druggability (P2Rank · AlphaFold DB model) 0.957
Direct ligand evidence 0 58 total records
Functional annotation 0 EC 4 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
0.5% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
89.75 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) 0.957
Structure A0A0H3GL61
Pocket Pocket 1
Druggability (FPocket) 0.893
Structure A0A0H3GL61
Pocket Pocket 2
ColabFold model
P2Rank 0.875 · Pocket 1
FPocket 0.905 · Pocket 5
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 24 / 4744 genomes with a hit
Prevalence 0.5%

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.

MLSNVKKKDVPLIAISLAAIVFIAATLSLFPQQTAQAADSIFNGVTRLLGSTVQVLVLLALGLVLYLATSKYGNIRLGEGKVEYSTLSWLFMFICAGLGSSTLYWGVAEWAYYYQTPGLNIAPQSPKALEYSIPYSFFHWGVSAWATYTLASLIMAYHFHVRKNKGLSLSGIVSAITGVNPQGFWGRLVDLMFLIATVGALTISLVVTAATFTRGLSALTGLPDNFTVQAFVILLSGGIFCMSSWIGINNGLQRLSKMVGWGAFLLPLVVLLVGPTEFITNNVINAVGLTTQNFLQMSLFTDPLGDGAFTRNWTVFYWLWWISYTPGVAMFVTRVSRGRKIKEVIWGLLLGSTTGCWFFFGVMESYAMHQFVNGVINVPQVMQTLGGETAVQQVLMSLPAGKLFLAAYLFVMIVFLASHMDAVAYTMAATSTRNLREGEDPDRGMRLFWCVVITLIPLSILFTGASLETMKTTVVLTALPFLAILLIKTGGFVRWLKQDYAHVPVHQIETHTPEPIIKAETLPVGAVLKGDGQSL

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

4
  • 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:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0071705 The directed movement of nitrogen-containing compounds into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
  • 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.

48 records
Show feature table
Start End DB Term Name
89 107 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
344 363 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
474 496 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
260 279 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
364 402 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
276 314 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
447 467 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
226 246 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
137 159 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 37 Phobius SIGNAL_PEPTIDE Signal peptide region
447 469 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
13 499 Pfam PF02028 BCCT, betaine/carnitine/choline family transporter
13 499 InterPro IPR000060 BCCT transporter family
427 446 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
69 88 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
215 225 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
191 213 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
315 332 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
160 190 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
403 426 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
226 248 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
313 332 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
1 37 SignalP_GRAM_POSITIVE SignalP-TM SignalP-TM
12 30 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
31 37 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
344 363 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
12 34 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
4 509 PANTHER PTHR30047 HIGH-AFFINITY CHOLINE TRANSPORT PROTEIN-RELATED
4 509 InterPro IPR000060 BCCT transporter family
44 66 TMHMM TMhelix 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.
333 343 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
38 46 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
56 499 NCBIfam TIGR00842 BCCT family transporter
56 499 InterPro IPR000060 BCCT transporter family
247 257 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
47 68 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 11 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
191 214 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
473 493 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
404 426 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
494 535 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
468 472 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
86 108 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
312 321 ProSitePatterns PS01303 BCCT family of transporters signature.
312 321 InterPro IPR018093 BCCT transporter, conserved site
258 275 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
108 136 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
0.957
Likely same site as FPocket 3 2.2 Å 19 shared residues 95% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.871
Likely same site as FPocket 2 1.3 Å 19 shared residues 95% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.633
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Surrounding area
Pocket 4 P2Rank #4
0.149
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Surrounding area
Pocket 5 P2Rank #5
0.117
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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 #2
0.893
Likely same site as P2Rank 2 1.3 Å 19 shared residues 95% of smaller site
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Surrounding area
Pocket 2 FPocket #3
0.837
Likely same site as P2Rank 1 2.2 Å 19 shared residues 95% of smaller site
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Surrounding area
Pocket 3 FPocket #32
0.453
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_A0A0H3GL61
AlphaFold DB full sequence Viewing
ColabFold VK055_1463
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.

58 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 8 records from similar proteins
Structural ligands 8 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
152 PDB via homolog 162.2 Da · LogP -0.47 · TPSA 57.5 Open detail RCSB PDB
1Y8 PDB via homolog Detail RCSB PDB
BET PDB via homolog Detail RCSB PDB
CHT PDB via homolog Detail RCSB PDB
CM5 PDB via homolog Detail RCSB PDB

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
152 RCSB PDB P31553 162.2 Da LogP -0.47 TPSA 57.5 ✓ Ro5 ✓ Clean C[N+](C)(C)C[C@@H](CC(=O)O)O
1Y8 RCSB PDB P54582 165.1 Da LogP 1.32 TPSA 20.2 ✓ Ro5 ✓ Clean C[As](C)(C)CCO
BET RCSB PDB P54582 118.2 Da LogP -0.22 TPSA 37.3 ✓ Ro5 ✓ Clean C[N+](C)(C)CC(=O)O
CHT RCSB PDB P54582 104.2 Da LogP -0.32 TPSA 20.2 ✓ Ro5 ✓ Clean C[N+](C)(C)CCO
CM5 RCSB PDB B4EY22 494.6 Da LogP -1.23 TPSA 178.5 2 viol. ✓ Clean C1CCC(CC1)CCCCCO[C@H]2[C@@H]([C@H]([C@@H]([C@H]…
FLC RCSB PDB P54582 189.1 Da LogP -5.25 TPSA 140.6 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O
NM2 RCSB PDB B4EY22 146.2 Da LogP 0.56 TPSA 37.3 ✓ Ro5 ✓ Clean C[N+](C)(C)CCCC(=O)O
PGT RCSB PDB P54582 751.0 Da LogP 10.67 TPSA 148.8 2 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)O[C@@H](COC(=O)CCCCCCCCCC…

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.