KpATCC43816 Protein target profile
voltage gated chloride channel family protein
Accession: VK055_3475
Promising target candidate with multiple supporting evidence streams.
Automated synthesis of the evidence currently loaded. Review the underlying records before prioritizing this protein.
Main supporting evidence
Risks to review
Evidence coverage
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
- 0.3% 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
- 94.2 0-100 confidence; >70 supports local structural interpretation.
Binding-site evidence
AlphaFold DB / UniProt modelP2Rank'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.
Sequence
Primary amino-acid sequence viewer.
MSVAAGNKNHLIRLIAVVLTGILAGLSGMVLALILHAIQHLAFGYSYGQIVGSVSFLQGVTESSWPRRIVAIVAGGAVAGFGWWLLGRYGQRRVSIAAAVANPCVPMPAGTTTIHALLQIVTVALGSPLGREVAPREMGALGAGMVARKLRLLEDETRTLIACGAGAGLAAVYNVPLAGALFSLEVMLLSFSWEKTLAAIMTSAIAAWTATLGLGDESQYHFVSSALPHSFLWWAILAGPILGTGAWLFRKATSAARSRARSNWQMPVFCLLGFSLLAILSLYFPELPGNGKGPMQLALSDGLPLSMVAVLLVLKMVVILAVLRGGAEGGLLTPGLAVGGLVSLLLCALWQLGFPGGDKSSFAVVGATAFLAASMQMPLTAVALVMEFTHMDHSYLAPALLCAAGAFLTCRVLDKK
Functional annotations
Enzyme classification and Gene Ontology terms linked to this protein.
Subcellular localization
- Localization
- CytoplasmicMembrane
Gene Ontology (GO)
6- GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
- GO:0006821 The directed movement of chloride into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
- GO:0005247 Enables the transmembrane transfer of a chloride ion by a voltage-gated channel. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.
- GO:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
- GO:0034707 An ion channel complex through which chloride ions pass.
- GO:0005254 Enables the energy-independent facilitated diffusion of a chloride ion through a transmembrane aqueous pore or channel.
Sequence domains and features
Domain and signature matches imported from InterPro and related databases.
Show feature table
| Start | End | DB | Term | Name |
|---|---|---|---|---|
| 160 | 182 | TMHMM | TMhelix | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 185 | 195 | Phobius | NON_CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region. |
| 250 | 263 | Phobius | NON_CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region. |
| 39 | 68 | Phobius | NON_CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region. |
| 2 | 416 | Gene3D | G3DSA:1.10.3080.10 | Clc chloride channel |
| 13 | 35 | TMHMM | TMhelix | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 326 | 330 | Phobius | NON_CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region. |
| 362 | 383 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 331 | 350 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 230 | 249 | TMHMM | TMhelix | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 159 | 184 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 384 | 394 | Phobius | NON_CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region. |
| 330 | 352 | TMHMM | TMhelix | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 362 | 384 | TMHMM | TMhelix | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 115 | 134 | PRINTS | PR00762 | Chloride channel signature |
| 115 | 134 | InterPro | IPR001807 | Chloride channel, voltage gated |
| 166 | 185 | PRINTS | PR00762 | Chloride channel signature |
| 166 | 185 | InterPro | IPR001807 | Chloride channel, voltage gated |
| 360 | 376 | PRINTS | PR00762 | Chloride channel signature |
| 360 | 376 | InterPro | IPR001807 | Chloride channel, voltage gated |
| 395 | 413 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 13 | 414 | PANTHER | PTHR43427 | CHLORIDE CHANNEL PROTEIN CLC-E |
| 87 | 158 | Phobius | CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm. |
| 304 | 323 | TMHMM | TMhelix | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 285 | 304 | Phobius | CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm. |
| 12 | 38 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 305 | 325 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 69 | 86 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 11 | 413 | SUPERFAMILY | SSF81340 | Clc chloride channel |
| 11 | 413 | InterPro | IPR014743 | Chloride channel, core |
| 226 | 249 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 65 | 87 | TMHMM | TMhelix | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 84 | 410 | Pfam | PF00654 | Voltage gated chloride channel |
| 84 | 410 | InterPro | IPR001807 | Chloride channel, voltage gated |
| 215 | 225 | Phobius | CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm. |
| 264 | 284 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 21 | 415 | CDD | cd01033 | ClC_like |
| 196 | 214 | Phobius | TRANSMEMBRANE | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 1 | 11 | Phobius | CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm. |
| 351 | 361 | Phobius | CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm. |
| 414 | 416 | Phobius | CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm. |
| 262 | 284 | 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.
How colors and pocket overlays are used
Pocket details Inspect a specific pocket, or open the full viewer
- Method
- -
- Score
- -
- Visible layer
- -
- Residues
- -
- Pocket properties
- -
Selecting a pocket opens its details and centers the viewer without clearing other active layers. Use Focus this pocket when you want to hide the rest; use Surface for the wider residue environment.
Binding pockets · P2Rank
Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2
Binding pockets · FPocket
Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4
Binding pockets · P2Rank
Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2
Binding pockets · FPocket
Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4
All structural evidence
Structural evidence
0 + 2Experimental 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_A0A0H3GYT7
|
AlphaFold DB | — | — | full sequence | — | Viewing |
|
ColabFold
VK055_3475
|
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.
Structural ligand evidence is available for this target.
Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in Target, use Open crystal to inspect it in the structure viewer.
No PDB structure with a co-crystallized ligand found for this exact protein.
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.
| Ligand | Source crystal | UniProt (homolog) | MW · LogP · TPSA | Lipinski | PAINS | SMILES |
|---|---|---|---|---|---|---|
| BXA RCSB PDB | P37019 | 138.9 Da LogP 0.47 TPSA 37.3 | ✓ Ro5 | ✓ Clean |
C(C(=O)O)Br
|
|
| MYS RCSB PDB | Q8ZRP8 | 212.4 Da LogP 6.10 TPSA 0.0 | 1 viol. | ✓ Clean |
CCCCCCCCCCCCCCC
|
|
| SEK RCSB PDB | P37019 | 105.0 Da LogP -0.36 TPSA 23.8 | ✓ Ro5 | ✓ Clean |
C(#N)[Se-]
|
Experimental bioactivity from ChEMBL measured directly on this protein. Score = pchembl (−log Ki/IC₅₀; higher = more potent).
No ChEMBL bioactivity data found for this exact protein.
Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).
No ChEMBL hits found through similar proteins.
Proposed virtual-screening candidates from ZINC. Score = Tanimoto similarity to a known binder (0–1; higher = more similar).
| Ligand | Tanimoto | MW · LogP · TPSA | Lipinski | PAINS | SMILES |
|---|---|---|---|---|---|
| ZINC1545440 ZINC | 0.615 | 213.4 Da LogP 4.65 TPSA 26.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCCN
|
| ZINC1644076 ZINC | 0.615 | 214.4 Da LogP 4.68 TPSA 20.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCCO
|
| ZINC1680803 ZINC | 0.615 | 200.4 Da LogP 4.29 TPSA 20.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCO
|
| ZINC195766643 ZINC | 0.615 | 231.9 Da LogP 2.93 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCC[Sn+3]
|
| ZINC59144932 ZINC | 0.615 | 202.4 Da LogP 4.84 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCS
|
| ZINC100027350 ZINC | 0.571 | 227.4 Da LogP 4.91 TPSA 12.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCNCCCCCCC
|
| ZINC1627284 ZINC | 0.571 | 214.4 Da LogP 4.94 TPSA 9.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCOCCCCCCC
|
| ZINC1699899 ZINC | 0.571 | 202.4 Da LogP 4.88 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCSCCCCCC
|
| ZINC1724011 ZINC | 0.571 | 213.4 Da LogP 4.52 TPSA 12.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCNCCCCCCC
|
| ZINC2564179 ZINC | 0.571 | 214.4 Da LogP 4.94 TPSA 9.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCOCCCCCC
|
| ZINC100050955 ZINC | 0.533 | 327.6 Da LogP 4.48 TPSA 36.1 | ✓ Ro5 | ✓ Clean |
CCCCCCCCNCCNCCNCCCCCCCC
|
| ZINC100077022 ZINC | 0.533 | 227.4 Da LogP 4.86 TPSA 3.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCN(C)CCCCCCC
|
| ZINC100924963 ZINC | 0.533 | 284.5 Da LogP 4.89 TPSA 24.1 | ✓ Ro5 | ✓ Clean |
CCCCCCCCNCCNCCCCCCCC
|
| ZINC106401282 ZINC | 0.533 | 227.4 Da LogP 4.91 TPSA 12.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCCNC
|
| ZINC1673414 ZINC | 0.533 | 228.4 Da LogP 4.61 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCC[N+](C)(C)C
|
| ZINC1687260 ZINC | 0.533 | 213.4 Da LogP 4.47 TPSA 3.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCN(C)C
|
| ZINC1700269 ZINC | 0.533 | 200.4 Da LogP 3.83 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCC[N+](C)(C)C
|
| ZINC2555244 ZINC | 0.533 | 227.4 Da LogP 4.86 TPSA 3.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCN(C)C
|
| ZINC35052519 ZINC | 0.533 | 228.4 Da LogP 3.33 TPSA 24.1 | ✓ Ro5 | ✓ Clean |
CCCCCCNCCNCCCCCC
|
| ZINC59359855 ZINC | 0.533 | 231.5 Da LogP 4.79 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCC[S+](C)C
|
| ZINC100015910 ZINC | 0.500 | 214.4 Da LogP 4.68 TPSA 20.2 | ✓ Ro5 | ✓ Clean |
CCCCCCC[C@@H](O)CCCCCC
|
| ZINC114881475 ZINC | 0.500 | 206.4 Da LogP 4.31 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCC(S)S
|
| ZINC1593347 ZINC | 0.500 | 246.5 Da LogP 4.68 TPSA 17.1 | ✓ Ro5 | ✓ Clean |
CCCCCCCS(=O)CCCCCCC
|
| ZINC1599570 ZINC | 0.500 | 227.4 Da LogP 4.86 TPSA 3.2 | ✓ Ro5 | ✓ Clean |
CCCCCN(CCCCC)CCCCC
|
| ZINC1605994 ZINC | 0.500 | 202.4 Da LogP 4.88 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCSCC
|
| ZINC1606032 ZINC | 0.500 | 200.4 Da LogP 4.29 TPSA 20.2 | ✓ Ro5 | ✓ Clean |
CCCCCCC[C@@H](O)CCCCC
|
| ZINC1606040 ZINC | 0.500 | 214.4 Da LogP 4.68 TPSA 20.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCC[C@@H](O)CCCCC
|
| ZINC1606049 ZINC | 0.500 | 200.4 Da LogP 4.29 TPSA 20.2 | ✓ Ro5 | ✓ Clean |
CCCCCCC(O)CCCCCC
|
| ZINC1672455 ZINC | 0.500 | 226.4 Da LogP 4.07 TPSA 34.1 | ✓ Ro5 | Alert |
CCCCCCC(=O)C(=O)CCCCCC
|
| ZINC1687262 ZINC | 0.500 | 213.4 Da LogP 4.52 TPSA 12.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCNCC
|
| ZINC1693894 ZINC | 0.500 | 212.4 Da LogP 4.89 TPSA 17.1 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCC=O
|
| ZINC1697133 ZINC | 0.500 | 214.4 Da LogP 4.94 TPSA 9.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCOCC
|
| ZINC169808442 ZINC | 0.500 | 305.1 Da LogP 4.57 TPSA 17.1 | ✓ Ro5 | ✓ Clean |
CCCCCC[Sn](=O)CCCCCC
|
| ZINC196468891 ZINC | 0.500 | 261.0 Da LogP 3.91 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCC[Sn+2]CCCCC
|
| ZINC20231719 ZINC | 0.500 | 234.4 Da LogP 3.56 TPSA 34.1 | ✓ Ro5 | ✓ Clean |
CCCCCCS(=O)(=O)CCCCCC
|
| ZINC2166283 ZINC | 0.500 | 262.5 Da LogP 4.34 TPSA 34.1 | ✓ Ro5 | ✓ Clean |
CCCCCCCCS(=O)(=O)CCCCCC
|
| ZINC221753674 ZINC | 0.500 | 324.3 Da LogP 4.61 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCC[Sn](Cl)(Cl)Cl
|
| ZINC2508105 ZINC | 0.500 | 200.4 Da LogP 4.29 TPSA 20.2 | ✓ Ro5 | ✓ Clean |
CCCCCCC[C@H](O)CCCCC
|
| ZINC2509968 ZINC | 0.500 | 214.4 Da LogP 4.68 TPSA 20.2 | ✓ Ro5 | ✓ Clean |
CCCCCCC[C@H](O)CCCCCC
|
| ZINC2528299 ZINC | 0.500 | 214.4 Da LogP 4.68 TPSA 20.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCC[C@H](O)CCCCC
|
| ZINC2900787 ZINC | 0.500 | 228.4 Da LogP 4.61 TPSA 0.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCC[N+](CC)(CC)CC
|
| ZINC45331803 ZINC | 0.500 | 201.4 Da LogP 3.80 TPSA 35.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCON
|
| ZINC59631801 ZINC | 0.500 | 200.4 Da LogP 3.37 TPSA 38.0 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCNN
|
| ZINC60107866 ZINC | 0.500 | 242.5 Da LogP 4.41 TPSA 24.1 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCNNCCC
|
| ZINC71773056 ZINC | 0.500 | 200.4 Da LogP 3.32 TPSA 29.3 | ✓ Ro5 | ✓ Clean |
CCCCCCN(N)CCCCCC
|
| ZINC97973035 ZINC | 0.500 | 212.4 Da LogP 4.23 TPSA 49.9 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCC(=N)N
|
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.