Protein profile
PA4159
iron-enterobactin transporter periplasmic binding protein
Genome: NC_002516.2
Overview
Basic information about this protein and its source genome.
- Accession
- PA4159
- Gene
- PA4159 fepB
- Status
- annotated
- Amino acids
- 301
- Structure source
- AlphaFold
Target profile
Computed evidence for target prioritization.
- Human off-target
- No hit
- Gut microbiome off-target
- hit
- Essential (DEG)
- Y
- Localization
- Periplasmic
Selected Druggability evidence
Selected Druggability is the FPocket score chosen for ranking using the curated structure priority. The 3D viewer may show a different loaded structure, so its visible pockets can differ.
Sequence
Primary amino-acid sequence viewer.
MPTRRRSALPLLALALSLFAILAAAGEPKPARIVSTTPSVTGILLAMDAPLVASAATTPSRLTDAKGFFSQWAKVADQRGVEVLYRNLRFDIEAVIAQDPDLLVASATGADSAAPYRAELEAQGVPTLVVDYSKHSWQELATELGRHTGLERQAQAAIQRFDAYTAEVAAAIAPPQGPVSVVGYNIAGSYSIGRQASPQARLLEALGFQVAELPEALAGKVTRASDFQFISRENLPAAIAGDSVFLLGASDDDVQAFLADPVLANLSAVREKRVYALGPSSFRIDYYSGRQMIDNVARHFR
Functional Annotations
Enzyme classification and Gene Ontology terms linked to this protein.
Gene Ontology (GO)
2- GO:0030288 The region between the inner (cytoplasmic or plasma) membrane and outer membrane of organisms with two membranes such as Gram negative bacteria. These periplasmic spaces are relatively thick and contain a thin peptidoglycan layer (PGL), also referred to as a thin cell wall.
- GO:1901678 The directed movement of an iron coordination entity into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
Sequence Features
Domain/signature hits from InterPro and related databases.
Show feature table
| Start | End | DB | Term | Name |
|---|---|---|---|---|
| 1 | 7 | Phobius | SIGNAL_PEPTIDE_N_REGION | N-terminal region of a signal peptide. |
| 25 | 130 | Gene3D | G3DSA:3.40.50.1980 | Nitrogenase molybdenum iron protein domain |
| 1 | 25 | SignalP_GRAM_NEGATIVE | SignalP-noTM | SignalP-noTM |
| 20 | 24 | Phobius | SIGNAL_PEPTIDE_C_REGION | C-terminal region of a signal peptide. |
| 32 | 301 | ProSiteProfiles | PS50983 | Iron siderophore/cobalamin periplasmic-binding domain profile. |
| 32 | 301 | InterPro | IPR002491 | ABC transporter periplasmic binding domain |
| 1 | 24 | Phobius | SIGNAL_PEPTIDE | Signal peptide region |
| 29 | 294 | CDD | cd01146 | FhuD |
| 1 | 25 | SignalP_GRAM_POSITIVE | SignalP-TM | SignalP-TM |
| 131 | 301 | Gene3D | G3DSA:3.40.50.1980 | Nitrogenase molybdenum iron protein domain |
| 33 | 279 | Pfam | PF01497 | Periplasmic binding protein |
| 33 | 279 | InterPro | IPR002491 | ABC transporter periplasmic binding domain |
| 29 | 300 | PANTHER | PTHR30532 | IRON III DICITRATE-BINDING PERIPLASMIC PROTEIN |
| 8 | 19 | Phobius | SIGNAL_PEPTIDE_H_REGION | Hydrophobic region of a signal peptide. |
| 7 | 26 | TMHMM | TMhelix | Region of a membrane-bound protein predicted to be embedded in the membrane. |
| 25 | 301 | Phobius | NON_CYTOPLASMIC_DOMAIN | Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region. |
| 29 | 287 | SUPERFAMILY | SSF53807 | Helical backbone metal receptor |
3D Structure
Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; predicted models typically cover the full protein.
Loading 3D structure...
Structural evidence
0 + 1Experimental PDB entries and predicted models. Click Switch to display a different structure in the viewer.
| Entry | Method | Resolution | Chain | Coverage | Links | Status |
|---|---|---|---|---|---|---|
|
AlphaFold
PA4159
|
AlphaFold | — | — | full sequence | — | Viewing |
Pocket details FPocket · P2Rank — toggle visibility and zoom from here, or open full viewer
Pockets (FPOCKET)
Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).
| FPOCKET | Sticks | Spheres | Surfaces | Druggability | Labels | Zoom | Positions |
|---|---|---|---|---|---|---|---|
| 1 | 0.703 | ||||||
| 3 | 0.592 | ||||||
| 2 | 0.337 |
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.
Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in TPW, 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 |
|---|---|---|---|---|---|---|
| 7PG | A0A2P5JFB2 | 384.5 Da LogP -0.26 TPSA 94.1 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCO
|
|
| EB4 | P0AEL6 | 669.6 Da LogP -0.74 TPSA 287.6 | 3 viol. | Alert |
c1cc(c(c(c1)O)O)C(=O)N[C@H]2COC(=O)[C@H](COC(=O…
|
|
| VBN | Q9RCF6 | 705.7 Da LogP 1.84 TPSA 243.1 | 3 viol. | Alert |
C[C@@H]1[C@H](N=C(O1)c2cccc(c2O)O)C(=O)NCCCN(CC…
|
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 |
|---|---|---|---|---|---|
| ZINC1580161 | 1.000 | 208.3 Da LogP -0.33 TPSA 57.2 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCO
|
| ZINC16052118 | 1.000 | 340.4 Da LogP -0.28 TPSA 84.8 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCO
|
| ZINC16052257 | 1.000 | 384.5 Da LogP -0.26 TPSA 94.1 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC34317654 | 1.000 | 472.6 Da LogP -0.23 TPSA 112.5 | 1 viol. | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC44076059 | 1.000 | 428.5 Da LogP -0.24 TPSA 103.3 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC5210101 | 1.000 | 252.3 Da LogP -0.31 TPSA 66.4 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCO
|
| ZINC5997860 | 1.000 | 296.4 Da LogP -0.29 TPSA 75.6 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCO
|
| ZINC575419714 | 0.727 | 312.4 Da LogP 0.42 TPSA 66.4 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCSCCOCCOCCO
|
| ZINC115163232 | 0.700 | 222.3 Da LogP 0.07 TPSA 57.2 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCCO
|
| ZINC258837490 | 0.700 | 354.4 Da LogP 0.11 TPSA 84.8 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCCO
|
| ZINC12501520 | 0.688 | 458.5 Da LogP -0.88 TPSA 123.5 | 1 viol. | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC1692489 | 0.688 | 222.3 Da LogP 0.33 TPSA 46.2 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOC
|
| ZINC3874716 | 0.688 | 414.5 Da LogP -0.90 TPSA 114.3 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC4283769 | 0.688 | 238.3 Da LogP -0.96 TPSA 77.4 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCO
|
| ZINC4521548 | 0.688 | 282.3 Da LogP -0.95 TPSA 86.6 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCOCCO
|
| ZINC4530388 | 0.688 | 266.3 Da LogP 0.35 TPSA 55.4 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOC
|
| ZINC5178829 | 0.688 | 326.4 Da LogP -0.93 TPSA 95.8 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCO
|
| ZINC5178830 | 0.688 | 370.4 Da LogP -0.91 TPSA 105.1 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC5701172 | 0.688 | 310.4 Da LogP 0.36 TPSA 64.6 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOC
|
| ZINC5997861 | 0.688 | 398.5 Da LogP 0.40 TPSA 83.1 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCOC
|
| ZINC575432150 | 0.667 | 344.4 Da LogP -0.89 TPSA 100.5 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCS(=O)(=O)CCOCCOCCO
|
| ZINC1857524240 | 0.652 | 207.3 Da LogP -0.75 TPSA 60.0 | ✓ Ro5 | ✓ Clean |
COCCNCCOCCOCCO
|
| ZINC5650743 | 0.600 | 222.3 Da LogP 0.07 TPSA 57.2 | ✓ Ro5 | ✓ Clean |
CCOCCOCCOCCOCCO
|
| ZINC6403917 | 0.600 | 354.4 Da LogP 0.11 TPSA 84.8 | ✓ Ro5 | ✓ Clean |
CCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC116078641 | 0.583 | 222.2 Da LogP -0.80 TPSA 74.2 | ✓ Ro5 | ✓ Clean |
COC(=O)COCCOCCOCCO
|
| ZINC1857790631 | 0.583 | 280.3 Da LogP -0.39 TPSA 83.5 | ✓ Ro5 | ✓ Clean |
COC(=O)CCOCCOCCOCCOCCO
|
| ZINC196151418 | 0.583 | 266.3 Da LogP -0.78 TPSA 83.5 | ✓ Ro5 | ✓ Clean |
COC(=O)COCCOCCOCCOCCO
|
| ZINC202958272 | 0.583 | 236.3 Da LogP -0.41 TPSA 74.2 | ✓ Ro5 | ✓ Clean |
COC(=O)CCOCCOCCOCCO
|
| ZINC34111591 | 0.583 | 207.3 Da LogP -1.06 TPSA 62.2 | ✓ Ro5 | ✓ Clean |
COCCOCCN(CCO)CCO
|
| ZINC642881862 | 0.583 | 324.4 Da LogP -0.38 TPSA 92.7 | ✓ Ro5 | ✓ Clean |
COC(=O)CCOCCOCCOCCOCCOCCO
|
| ZINC1772656721 | 0.558 | 233.2 Da LogP 0.60 TPSA 75.6 | ✓ Ro5 | ✓ Clean |
C=C1C(=O)OC[C@H]1NC(=O)c1ccccc1O
|
| ZINC34764844 | 0.550 | 206.3 Da LogP 1.09 TPSA 36.9 | ✓ Ro5 | ✓ Clean |
CCCOCCOCCOCCOC
|
| ZINC1644613 | 0.545 | 206.3 Da LogP 0.83 TPSA 47.9 | ✓ Ro5 | ✓ Clean |
CCCCOCCOCCOCCO
|
| ZINC2383745924 | 0.542 | 398.5 Da LogP -0.01 TPSA 94.1 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCC(CO)COCCOCCOCCOC
|
| ZINC115086873 | 0.524 | 209.2 Da LogP -1.08 TPSA 83.2 | ✓ Ro5 | ✓ Clean |
NOCCOCCOCCOCCO
|
| ZINC140264883 | 0.524 | 223.3 Da LogP -0.43 TPSA 72.2 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCON
|
| ZINC146143823 | 0.524 | 237.3 Da LogP -1.00 TPSA 83.2 | ✓ Ro5 | ✓ Clean |
NCCOCCOCCOCCOCCO
|
| ZINC1542984442 | 0.524 | 413.5 Da LogP -0.93 TPSA 120.1 | ✓ Ro5 | ✓ Clean |
NCCOCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC1857792057 | 0.524 | 474.6 Da LogP 0.06 TPSA 103.3 | 1 viol. | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCS
|
| ZINC44583772 | 0.524 | 356.5 Da LogP 0.66 TPSA 64.6 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCS
|
| ZINC5024003 | 0.524 | 251.3 Da LogP -0.34 TPSA 72.2 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCN
|
| ZINC575432090 | 0.524 | 355.4 Da LogP -0.38 TPSA 99.9 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCON
|
| ZINC71254563 | 0.524 | 488.6 Da LogP 0.71 TPSA 92.3 | 1 viol. | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCS
|
| ZINC77271182 | 0.524 | 281.3 Da LogP -0.98 TPSA 92.4 | ✓ Ro5 | ✓ Clean |
NCCOCCOCCOCCOCCOCCO
|
| ZINC83253927 | 0.524 | 400.5 Da LogP 0.68 TPSA 73.8 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCS
|
| ZINC83253930 | 0.524 | 224.3 Da LogP 0.61 TPSA 36.9 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCS
|
| ZINC83253936 | 0.524 | 383.5 Da LogP -0.29 TPSA 99.9 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCN
|
| ZINC90556279 | 0.524 | 295.4 Da LogP -0.33 TPSA 81.4 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCN
|
| ZINC90556287 | 0.524 | 268.4 Da LogP 0.63 TPSA 46.2 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCS
|
| ZINC90741446 | 0.524 | 386.5 Da LogP 0.02 TPSA 84.8 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCOCCS
|
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.