KpKP13 Protein target profile

High-affinity choline transport protein

Accession: KP13_03427

Gene: betT AHE45804.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GPG4
Length 677
Pocket druggability (P2Rank · AlphaFold DB model) 0.939
Direct ligand evidence 0 58 total records
Functional annotation 0 EC 3 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
1.7% 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.

Structure confidence

ColabFold pLDDT
90.13 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) 0.939
Structure A0A0H3GPG4
Pocket Pocket 1
Druggability (FPocket) 0.683
Structure A0A0H3GPG4
Pocket Pocket 9
ColabFold model
P2Rank 0.935 · Pocket 1
FPocket 0.352 · Pocket 42
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 79 / 4744 genomes with a hit
Prevalence 1.7%

Sequence

Primary amino-acid sequence viewer.

MTDLSQSREKDKINPVVFYTSAGLILLFSLMTIFFRDFSAEWIGRTLDWVSKTFGWYYLLAATLYIVFVVCIACSRFGSVKLGPEQSKPEFSLLSWAAMLFAAGIGIDLMFFSVAEPVTQYMQPPEGAGQTIEAARQAMVWTLFHYGLTGWSMYALMGMALGYFSYRYNLPLTIRSALYPIFGKRINGPIGHSVDIAAVIGTIFGIATTLGIGVVQLNYGLSVLFDIPDSLAAKAALIALSVIIATISVTSGVDKGIRVLSELNVALALGLILFVLFMGDTSFLLNALVLNVGDYVNRFMGMTLNSFAFDRPVEWMNNWTLFFWAWWVAWSPFVGLFLARISRGRTIRQFVMGTLIIPFTFTLLWLSVFGNSALYEIIHGDAAFAQEAMAHPERGFYSLLAQYPAFTFSASVATITGLLFYVTSADSGALVLGNFTSKLKDINSDAPNWLRIFWSVAIGLLTLGMLMTNGISALQNTTVIMGLPFSFVIFFVMAGLYKSLKVEDYRRVSASRDTAPRPMGLQDRLSWKKRLSRLMNYPGTRYTKLMMETVCYPAMEEVAQELRLRGAAVELKSLPPEEGENLGHLDLLVHMGDEQNFIYKIWPQQYSVPGFTYRARSGKSTYYRLETFLLEGSQGNDLMDYSKEQVITDILDQYERHLNFIHLHREAPGNSVMFPDG

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

3 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

3
  • 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: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.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

45 records
Show feature table
Start End DB Term Name
55 79 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
116 142 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
369 405 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
194 216 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
13 35 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
167 193 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
80 90 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
90 112 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
452 474 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
55 77 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
433 451 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
17 501 Pfam PF02028 BCCT, betaine/carnitine/choline family transporter
17 501 InterPro IPR000060 BCCT transporter family
318 327 ProSitePatterns PS01303 BCCT family of transporters signature.
318 327 InterPro IPR018093 BCCT transporter, conserved site
265 290 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 612 PANTHER PTHR30047 HIGH-AFFINITY CHOLINE TRANSPORT PROTEIN-RELATED
1 612 InterPro IPR000060 BCCT transporter family
143 165 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
291 318 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
55 503 NCBIfam TIGR00842 BCCT family transporter
55 503 InterPro IPR000060 BCCT transporter family
143 166 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
410 432 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
350 369 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
231 253 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
220 230 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
319 338 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
452 472 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
406 432 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
194 219 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
91 115 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
498 677 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
319 338 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
339 349 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
36 54 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
265 287 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
231 253 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 15 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
350 368 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
16 35 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
478 497 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
254 264 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
473 477 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
478 500 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
0.939
Likely same site as FPocket 39 2.9 Å 13 shared residues 93% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.538
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Surrounding area
Pocket 3 P2Rank #3
0.196
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Surrounding area
Pocket 4 P2Rank #4
0.162
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Surrounding area
Pocket 5 P2Rank #5
0.071
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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 #9
0.683
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Surrounding area
Pocket 2 FPocket #39
0.47
Likely same site as P2Rank 1 2.9 Å 13 shared residues 93% 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_A0A0H3GPG4
AlphaFold DB full sequence Viewing
ColabFold KP13_03427
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.