KpATCC43816 Protein target profile
bacterial extracellular solute-binding, 3 familyprotein
Accession: VK055_3024
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
- 0.4% 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
- 85.5 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.
MNAYSLSRLFIAWLTCLATLLFAPLLPAVEAEKAPPAAAEDNTLSIHIDDMLRPWRGDLPGMIDRRTIRVLTTYSKTFFFIDKGTQRGATHDIFIALENDLNKQLAKDKKLKQRHLKLHIVFVPVSRDNLFIALNEGKGDIAAANLTITPSREAQVDFAQPLYSNVKELLISGPASPKVDSLEQLSGQTVFVRRSSSYYDSLQALNARFAGESRPPVILEAAPEALEDEDLLEMLNAGLIPLIVVDQHKALFWKQVFPKIQVHDNVVLRDGGDIAWAVRKDSPQLLTVLNNFVKKNRQGTTLGNTLLLRYLKNAKYVKNAAASKERRKFLAMVDVFRKYGDRYDVDWLLMAAQGYQESRLNQSVRSHVGAIGVMQVMPSTGKELKVGDIKQLDPNIHAGVKYMRWMMDRYYADEPMTRLDKALFTFASYNAGPARIARLRTMTKQRGFDPNVWFGNVENMAAEKIGAETVTYVSNIYKYYIAYRLIVDDMARKQKATAVPRQEPVAQPAKPQPSVATAATAQVPVI
Functional annotations
Enzyme classification and Gene Ontology terms linked to this protein.
Subcellular localization
- Localization
- Cytoplasmic
No GO or EC annotations are currently loaded for this protein.
Sequence domains and features
Domain and signature matches imported from InterPro and related databases.
Show feature table
| Start | End | DB | Term | Name |
|---|---|---|---|---|
| 11 | 26 | Phobius | SIGNAL_PEPTIDE_H_REGION | Hydrophobic region of a signal peptide. |
| 67 | 302 | SUPERFAMILY | SSF53850 | Periplasmic binding protein-like II |
| 1 | 10 | Phobius | SIGNAL_PEPTIDE_N_REGION | N-terminal region of a signal peptide. |
| 166 | 270 | Gene3D | G3DSA:3.40.190.10 | - |
| 67 | 314 | SMART | SM00062 | AABind_6 |
| 67 | 314 | InterPro | IPR001638 | Solute-binding protein family 3/N-terminal domain of MltF |
| 66 | 312 | CDD | cd01009 | PBP2_YfhD_N |
| 336 | 484 | CDD | cd13403 | MLTF-like |
| 32 | 526 | Phobius | NON_CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region. |
| 114 | 302 | Pfam | PF00497 | Bacterial extracellular solute-binding proteins, family 3 |
| 114 | 302 | InterPro | IPR001638 | Solute-binding protein family 3/N-terminal domain of MltF |
| 27 | 31 | Phobius | SIGNAL_PEPTIDE_C_REGION | C-terminal region of a signal peptide. |
| 8 | 302 | PANTHER | PTHR35936 | MEMBRANE-BOUND LYTIC MUREIN TRANSGLYCOSYLASE F |
| 64 | 303 | Gene3D | G3DSA:3.40.190.10 | - |
| 332 | 486 | SUPERFAMILY | SSF53955 | Lysozyme-like |
| 332 | 486 | InterPro | IPR023346 | Lysozyme-like domain superfamily |
| 335 | 445 | Pfam | PF01464 | Transglycosylase SLT domain |
| 335 | 445 | InterPro | IPR008258 | Transglycosylase SLT domain 1 |
| 7 | 29 | TMHMM | TMhelix | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 1 | 31 | SignalP_GRAM_POSITIVE | SignalP-TM | SignalP-TM |
| 1 | 31 | Phobius | SIGNAL_PEPTIDE | Signal peptide region |
| 1 | 31 | SignalP_EUK | SignalP-noTM | SignalP-noTM |
| 330 | 501 | Gene3D | G3DSA:1.10.530.10 | - |
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_A0A0H3GLY4
|
AlphaFold DB | — | — | full sequence | — | Viewing |
|
ColabFold
VK055_3024
|
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 |
|---|---|---|---|---|---|---|
| 6X4 RCSB PDB | A0A1I9GEN8 | 489.6 Da LogP -3.89 TPSA 244.7 | 1 viol. | ✓ Clean |
C[C@H](C(=O)N)NC(=O)C(CCCC[NH3+])NC(=O)CC[C@H](…
|
|
| BLG RCSB PDB | P0AGC3 | 552.6 Da LogP -6.16 TPSA 271.9 | 3 viol. | ✓ Clean |
CC(=O)N[C@@H]1[C@H]([C@@H]([C@H](O[C@H]1O[C@H]2…
|
|
| BUL RCSB PDB | Q9HZI6 | 551.5 Da LogP -5.13 TPSA 267.3 | 3 viol. | ✓ Clean |
CC(=O)N[C@@H]1[C@H]([C@@H]([C@H](O[C@H]1O[C@H]2…
|
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 |
|---|---|---|---|---|---|
| ZINC34074657 ZINC | 0.769 | 444.4 Da LogP -4.05 TPSA 221.2 | 2 viol. | ✓ Clean |
CC(=O)N[C@H]1[C@H](O[C@H]2C[C@@H](C(=O)O)N[C@@H…
|
| ZINC15722130 ZINC | 0.582 | 488.5 Da LogP -2.61 TPSA 243.0 | 1 viol. | ✓ Clean |
C[C@H](N)C(=O)N[C@H](CCC(=O)N[C@@H](CCCCN)C(=O)…
|
| ZINC255987061 ZINC | 0.582 | 488.5 Da LogP -2.61 TPSA 243.0 | 1 viol. | ✓ Clean |
C[C@H](N)C(=O)N[C@H](CCC(=O)N[C@H](CCCCN)C(=O)N…
|
| ZINC255987062 ZINC | 0.582 | 488.5 Da LogP -2.61 TPSA 243.0 | 1 viol. | ✓ Clean |
C[C@H](N)C(=O)N[C@H](CCC(=O)N[C@H](CCCCN)C(=O)N…
|
| ZINC255987063 ZINC | 0.582 | 488.5 Da LogP -2.61 TPSA 243.0 | 1 viol. | ✓ Clean |
C[C@H](N)C(=O)N[C@H](CCC(=O)N[C@H](CCCCN)C(=O)N…
|
| ZINC255987064 ZINC | 0.582 | 488.5 Da LogP -2.61 TPSA 243.0 | 1 viol. | ✓ Clean |
C[C@H](N)C(=O)N[C@H](CCC(=O)N[C@H](CCCCN)C(=O)N…
|
| ZINC64219359 ZINC | 0.565 | 202.3 Da LogP -0.41 TPSA 106.4 | ✓ Ro5 | ✓ Clean |
CC(C)[C@H](C(=O)[C@@H](C)N)[C@H](N)C(=O)O
|
| ZINC64219360 ZINC | 0.565 | 202.3 Da LogP -0.41 TPSA 106.4 | ✓ Ro5 | ✓ Clean |
CC(C)[C@@H](C(=O)[C@@H](C)N)[C@H](N)C(=O)O
|
| ZINC79670384 ZINC | 0.565 | 202.3 Da LogP -0.41 TPSA 106.4 | ✓ Ro5 | ✓ Clean |
CC(C)[C@@H](C(=O)[C@H](C)N)[C@H](N)C(=O)O
|
| ZINC79670387 ZINC | 0.565 | 202.3 Da LogP -0.41 TPSA 106.4 | ✓ Ro5 | ✓ Clean |
CC(C)[C@H](C(=O)[C@H](C)N)[C@H](N)C(=O)O
|
| ZINC5131766 ZINC | 0.538 | 224.3 Da LogP -1.26 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
N[C@@H](CS)C(=O)N[C@@H](CS)C(=O)O
|
| ZINC13529436 ZINC | 0.533 | 212.3 Da LogP 1.76 TPSA 46.3 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@H](N)C(=O)N1CCCCCC1
|
| ZINC19502834 ZINC | 0.533 | 212.3 Da LogP 1.76 TPSA 46.3 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@@H](N)C(=O)N1CCCCCC1
|
| ZINC19502836 ZINC | 0.533 | 212.3 Da LogP 1.76 TPSA 46.3 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@@H](N)C(=O)N1CCCCCC1
|
| ZINC19502838 ZINC | 0.533 | 212.3 Da LogP 1.76 TPSA 46.3 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@H](N)C(=O)N1CCCCCC1
|
| ZINC2560328 ZINC | 0.520 | 239.1 Da LogP 1.53 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@@H](CC(C(F)(F)F)C(F)(F)F)C(=O)O
|
| ZINC4348166 ZINC | 0.520 | 239.1 Da LogP 1.53 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@H](CC(C(F)(F)F)C(F)(F)F)C(=O)O
|
| ZINC1579628 ZINC | 0.517 | 202.3 Da LogP -0.05 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC(C)C[C@@H](N)C(=O)NCCC(=O)O
|
| ZINC2390984 ZINC | 0.517 | 202.3 Da LogP -0.05 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC(C)C[C@H](N)C(=O)NCCC(=O)O
|
| ZINC11959312 ZINC | 0.516 | 213.3 Da LogP 0.13 TPSA 49.6 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@H](N)C(=O)N1CCN(C)CC1
|
| ZINC11959315 ZINC | 0.516 | 213.3 Da LogP 0.13 TPSA 49.6 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@H](N)C(=O)N1CCN(C)CC1
|
| ZINC19504598 ZINC | 0.516 | 213.3 Da LogP 0.13 TPSA 49.6 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@@H](N)C(=O)N1CCN(C)CC1
|
| ZINC19504599 ZINC | 0.516 | 213.3 Da LogP 0.13 TPSA 49.6 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@@H](N)C(=O)N1CCN(C)CC1
|
| ZINC247966296 ZINC | 0.510 | 290.3 Da LogP -1.40 TPSA 136.0 | ✓ Ro5 | ✓ Clean |
C[C@H](O)C(=O)NCCCC[C@H](NC(=O)[C@H](C)O)C(=O)O
|
| ZINC247966298 ZINC | 0.510 | 290.3 Da LogP -1.40 TPSA 136.0 | ✓ Ro5 | ✓ Clean |
C[C@H](O)C(=O)NCCCC[C@@H](NC(=O)[C@@H](C)O)C(=O…
|
| ZINC247966301 ZINC | 0.510 | 290.3 Da LogP -1.40 TPSA 136.0 | ✓ Ro5 | ✓ Clean |
C[C@H](O)C(=O)NCCCC[C@@H](NC(=O)[C@H](C)O)C(=O)O
|
| ZINC247966305 ZINC | 0.510 | 290.3 Da LogP -1.40 TPSA 136.0 | ✓ Ro5 | ✓ Clean |
C[C@H](O)C(=O)NCCCC[C@H](NC(=O)[C@@H](C)O)C(=O)O
|
| ZINC11959285 ZINC | 0.500 | 200.3 Da LogP 0.22 TPSA 55.6 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@H](N)C(=O)N1CCOCC1
|
| ZINC11959288 ZINC | 0.500 | 200.3 Da LogP 0.22 TPSA 55.6 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@H](N)C(=O)N1CCOCC1
|
| ZINC11961470 ZINC | 0.500 | 200.3 Da LogP 1.52 TPSA 55.1 | ✓ Ro5 | ✓ Clean |
CC(C)CCNC(=O)[C@@H](N)CC(C)C
|
| ZINC1589383 ZINC | 0.500 | 244.3 Da LogP 0.98 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@H](NC(=O)[C@@H](N)CC(C)C)C(=O)O
|
| ZINC17142439 ZINC | 0.500 | 244.3 Da LogP 0.98 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@@H](NC(=O)[C@@H](N)CC(C)C)C(=O)O
|
| ZINC17142440 ZINC | 0.500 | 244.3 Da LogP 0.98 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@@H](NC(=O)[C@@H](N)CC(C)C)C(=O)O
|
| ZINC19506206 ZINC | 0.500 | 200.3 Da LogP 0.22 TPSA 55.6 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@@H](N)C(=O)N1CCOCC1
|
| ZINC19506207 ZINC | 0.500 | 200.3 Da LogP 0.22 TPSA 55.6 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@@H](N)C(=O)N1CCOCC1
|
| ZINC2390960 ZINC | 0.500 | 244.3 Da LogP 0.98 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@H](NC(=O)[C@@H](N)CC(C)C)C(=O)O
|
| ZINC2522617 ZINC | 0.500 | 245.3 Da LogP -1.20 TPSA 135.5 | ✓ Ro5 | ✓ Clean |
CC(C)C[C@H](N)C(=O)N[C@@H](CC(N)=O)C(=O)O
|
| ZINC2562301 ZINC | 0.500 | 244.3 Da LogP 0.98 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@H](NC(=O)[C@H](N)CC(C)C)C(=O)O
|
| ZINC36158109 ZINC | 0.500 | 221.3 Da LogP 2.10 TPSA 52.3 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@H](N)C(=O)OCc1ccccc1
|
| ZINC36158113 ZINC | 0.500 | 221.3 Da LogP 2.10 TPSA 52.3 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@@H](N)C(=O)OCc1ccccc1
|
| ZINC37246007 ZINC | 0.500 | 221.3 Da LogP 2.10 TPSA 52.3 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@H](N)C(=O)OCc1ccccc1
|
| ZINC37246008 ZINC | 0.500 | 221.3 Da LogP 2.10 TPSA 52.3 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@@H](N)C(=O)OCc1ccccc1
|
| ZINC40439568 ZINC | 0.500 | 208.2 Da LogP -2.19 TPSA 112.7 | ✓ Ro5 | ✓ Clean |
N[C@@H](CS)C(=O)N[C@@H](CO)C(=O)O
|
| ZINC4556661 ZINC | 0.500 | 245.3 Da LogP -1.20 TPSA 135.5 | ✓ Ro5 | ✓ Clean |
CC(C)C[C@@H](N)C(=O)N[C@@H](CC(N)=O)C(=O)O
|
| ZINC4556662 ZINC | 0.500 | 245.3 Da LogP -1.20 TPSA 135.5 | ✓ Ro5 | ✓ Clean |
CC(C)C[C@H](N)C(=O)N[C@H](CC(N)=O)C(=O)O
|
| ZINC4556663 ZINC | 0.500 | 245.3 Da LogP -1.20 TPSA 135.5 | ✓ Ro5 | ✓ Clean |
CC(C)C[C@@H](N)C(=O)N[C@H](CC(N)=O)C(=O)O
|
| ZINC5618626 ZINC | 0.500 | 244.3 Da LogP 0.98 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@H](NC(=O)[C@H](N)CC(C)C)C(=O)O
|
| ZINC5618627 ZINC | 0.500 | 244.3 Da LogP 0.98 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC[C@@H](C)[C@@H](NC(=O)[C@H](N)CC(C)C)C(=O)O
|
| ZINC5618628 ZINC | 0.500 | 244.3 Da LogP 0.98 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
CC[C@H](C)[C@@H](NC(=O)[C@H](N)CC(C)C)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.