KpKP13 Protein target profile

putative transporter protein

Accession: KP13_00999

Gene: AHE43471.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GT31
Length 610
Pocket druggability (P2Rank · AlphaFold DB model) 0.796
Direct ligand evidence 0 82 total records
Functional annotation 0 EC 5 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
2.6% 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
83.48 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) 0.796
Structure A0A0H3GT31
Pocket Pocket 1
Druggability (FPocket) 0.453
Structure A0A0H3GT31
Pocket Pocket 4
ColabFold model
P2Rank 0.814 · Pocket 1
FPocket 0.83 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 125 / 4744 genomes with a hit
Prevalence 2.6%

Sequence

Primary amino-acid sequence viewer.

MNGELIWVLSLLAIAVVLFATGKVRMDAIALMVIVAFVLSGTLTLNEAFSGFSDPNVILIAALFIIGDGLVRTGVATKMGAWLVSVAGNSETKMLIYLMLTVAGLGAFMSSTGVVAIFIPVVLSVSARMNTSPSRLMMPLSFAGLISGMMTLVATPPNLVVNSELLREGLHGFSFFSVTPIGLVVLILGIVYMLAVRFMLKTDNGDSARDGRKRSTFRDLIREYHLTGRARRLAIRPGSPMIGQRLDDLKLRERYCANVIGVERWRRFRRVIVNVNGVSEFRARDVLLIDMSASDVDLRQFCGEQMLEPMVLRGEYFADQALDVGMAEVALIPDSEMIGKTVREIAFRTRFGLNIVGMKRDGKAMDGSVVDEPLQLGDILLVVGNWRQIALLAKRGRDFVVLNMPVEVDDASPAHSQAPHAIFCLVLMVALMLTDEIPNPIAAIIACLLMGKFRCINAESAYKAIHWPSIILIVGMMPFALALQKTGGVDLVVKGLMDVAGGEGPYLMLGCLFVMCAAIGLFISNTATAVLMAPIALAAAKSMGVSPYPFAMVVAMAASAAFMTPVSSQVNTLVLGPGKYSFSDFVKIGVPFTILVMVVCVLLIPVLFPF

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

5
  • GO:0006813 The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
  • 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:0008324 Enables the transfer of cation 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.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

60 records
Show feature table
Start End DB Term Name
1 4 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
609 610 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
485 503 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
5 22 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
57 76 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
125 135 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
5 610 PANTHER PTHR43652 BASIC AMINO ACID ANTIPORTER YFCC-RELATED
16 197 Pfam PF03600 Citrate transporter
16 197 InterPro IPR004680 Citrate transporter-like domain
504 523 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
458 463 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
95 124 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
538 548 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
440 457 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
586 608 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
218 307 ProSiteProfiles PS51202 RCK C-terminal domain profile.
218 307 InterPro IPR006037 Regulator of K+ conductance, C-terminal
549 568 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
326 394 Pfam PF02080 TrkA-C domain
326 394 InterPro IPR006037 Regulator of K+ conductance, C-terminal
231 298 Pfam PF02080 TrkA-C domain
231 298 InterPro IPR006037 Regulator of K+ conductance, C-terminal
5 22 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
23 27 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
28 50 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
569 587 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
28 45 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
544 566 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
430 607 Pfam PF03600 Citrate transporter
430 607 InterPro IPR004680 Citrate transporter-like domain
588 608 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
504 537 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
196 417 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
156 174 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
322 394 SUPERFAMILY SSF116726 TrkA C-terminal domain-like
322 394 InterPro IPR036721 Regulator of K+ conductance, C-terminal domain superfamily
76 94 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
57 75 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
230 295 SUPERFAMILY SSF116726 TrkA C-terminal domain-like
230 295 InterPro IPR036721 Regulator of K+ conductance, C-terminal domain superfamily
435 439 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
323 398 FunFam G3DSA:3.30.70.1450:FF:000006 Citrate transporter protein
558 574 ProSitePatterns PS01271 Sodium:sulfate symporter family signature.
558 574 InterPro IPR031312 Sodium/sulphate symporter, conserved site
418 434 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
176 198 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
175 195 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
46 56 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
464 484 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
139 161 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
314 398 ProSiteProfiles PS51202 RCK C-terminal domain profile.
314 398 InterPro IPR006037 Regulator of K+ conductance, C-terminal
323 399 Gene3D G3DSA:3.30.70.1450 -
323 399 InterPro IPR036721 Regulator of K+ conductance, C-terminal domain superfamily
230 306 Gene3D G3DSA:3.30.70.1450 -
230 306 InterPro IPR036721 Regulator of K+ conductance, C-terminal domain superfamily
136 155 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
462 484 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
96 118 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
230 306 FunFam G3DSA:3.30.70.1450:FF:000005 Citrate transporter protein

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
0.796
Likely same site as FPocket 4 2.4 Å 23 shared residues 92% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.288
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Surrounding area
Pocket 3 P2Rank #3
0.197
Likely same site as FPocket 4 7.9 Å 5 shared residues 42% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.132
Likely same site as FPocket 13 1.3 Å 12 shared residues 92% of smaller site
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Surrounding area
Pocket 5 P2Rank #5
0.127
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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 #4
0.453
Likely same site as P2Rank 1 2.4 Å 23 shared residues 92% of smaller site
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Surrounding area
Pocket 2 FPocket #13
0.219
Likely same site as P2Rank 4 1.3 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_A0A0H3GT31
AlphaFold DB full sequence Viewing
ColabFold KP13_00999
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.

82 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 32 records from similar proteins
Structural ligands 6 0 loaded crystals
Measured bioactivity 26 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
FUM PDB via homolog 116.1 Da · LogP -0.29 · TPSA 74.6 Open detail RCSB PDB
HEX PDB via homolog Detail RCSB PDB
LMR PDB via homolog Detail RCSB PDB
OCT PDB via homolog Detail RCSB PDB
SIN 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
FUM RCSB PDB Q9KNE0 116.1 Da LogP -0.29 TPSA 74.6 ✓ Ro5 ✓ Clean C(=C/C(=O)O)\C(=O)O
HEX RCSB PDB Q9KNE0 86.2 Da LogP 2.59 TPSA 0.0 ✓ Ro5 ✓ Clean CCCCCC
LMR RCSB PDB Q9KNE0 134.1 Da LogP -1.09 TPSA 94.8 ✓ Ro5 ✓ Clean C([C@@H](C(=O)O)O)C(=O)O
OCT RCSB PDB Q9KNE0 114.2 Da LogP 3.37 TPSA 0.0 ✓ Ro5 ✓ Clean CCCCCCCC
SIN RCSB PDB Q9KNE0 118.1 Da LogP -0.06 TPSA 74.6 ✓ Ro5 ✓ Clean C(CC(=O)O)C(=O)O
UB7 RCSB PDB Q9KNE0 166.1 Da LogP 1.08 TPSA 74.6 ✓ Ro5 ✓ Clean c1cc(ccc1C(=O)O)C(=O)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.