KpKP13 Protein target profile

Taurine transport system permease protein tauC

Accession: KP13_02106

Gene: tauC AHE46106.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GSH5
Length 275
Pocket druggability (P2Rank · AlphaFold DB model) 0.11
Direct ligand evidence 0 53 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
2.0% 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
90.12 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) 0.11
Structure A0A0H3GSH5
Pocket Pocket 1
Druggability (FPocket) 0.746
Structure A0A0H3GSH5
Pocket Pocket 2
ColabFold model
P2Rank 0.032 · Pocket 1
FPocket 0.442 · Pocket 10
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 96 / 4744 genomes with a hit
Prevalence 2.0%

Sequence

Primary amino-acid sequence viewer.

MSVVLNDKPRQSTLKWRWPLSRELTLSVATLAVLLAVWWAVAALQLISPLFLPPPGQVLQKLITIAGPQGFMDATLWQHLAASLTRIVIALLAAVLIGVPVGIAMGLNSTVRGILDPLIELYRPVPPLAYLPLMVIWFGIGETSKILLIYLAIFAPVAMSALAGVKSAQQVRIRAARSLGASRAQVLWLVILPGALPEILTGLRIGLGVGWSTLVAAELIAATRGLGFMVQSAGEFLATDVVLAGIAVIAIIAFLLELGLRALQRRLTPWHGEVQ

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

5
  • 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:0042918 The directed movement of an alkanesulfonate into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Alkanesulfonates are organic esters or salts of sulfonic acid containing an aliphatic hydrocarbon radical.
  • GO:0010438 Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of deprivation of sulfur.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

31 records
Show feature table
Start End DB Term Name
186 208 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
85 107 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
141 145 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
1 23 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
48 86 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
257 275 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
146 165 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
80 264 ProSiteProfiles PS50928 ABC transporter integral membrane type-1 domain profile.
80 264 InterPro IPR000515 ABC transporter type 1, transmembrane domain MetI-like
75 258 SUPERFAMILY SSF161098 MetI-like
75 258 InterPro IPR035906 MetI-like superfamily
208 235 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
121 140 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
236 258 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
98 269 Pfam PF00528 Binding-protein-dependent transport system inner membrane component
98 269 InterPro IPR000515 ABC transporter type 1, transmembrane domain MetI-like
236 256 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
69 268 Gene3D G3DSA:1.10.3720.10 -
69 268 InterPro IPR035906 MetI-like superfamily
119 141 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
73 267 FunFam G3DSA:1.10.3720.10:FF:000003 Aliphatic sulfonate ABC transporter permease
20 42 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
146 165 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
87 109 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
24 47 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
186 207 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
166 185 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
110 120 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
22 272 PANTHER PTHR30151 ALKANE SULFONATE ABC TRANSPORTER-RELATED, MEMBRANE SUBUNIT
80 222 CDD cd06261 TM_PBP2
80 222 InterPro IPR000515 ABC transporter type 1, transmembrane domain MetI-like

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
0.11
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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
0.746
Show in viewer
Surrounding area
Pocket 2 FPocket #1
0.214
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_A0A0H3GSH5
AlphaFold DB full sequence Viewing
ColabFold KP13_02106
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.

53 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 3 records from similar proteins
Structural ligands 3 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
2BA PDB via homolog 658.4 Da · LogP -1.63 · TPSA 309.7 Open detail RCSB PDB
ANP PDB via homolog Detail RCSB PDB
BET PDB via homolog Detail RCSB PDB
ZINC12502230 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC3581269 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
2BA RCSB PDB A0A0V8ETW8 658.4 Da LogP -1.63 TPSA 309.7 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@H]4[C@H](O3)C…
ANP RCSB PDB A0A0V8ETW8 506.2 Da LogP -2.06 TPSA 281.9 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
BET RCSB PDB A0A0V8ETW8 118.2 Da LogP -0.22 TPSA 37.3 ✓ Ro5 ✓ Clean C[N+](C)(C)CC(=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.