Protein target profile

KP13_00684

Ferrous iron transport protein B

Genome: KpKP13 Gene: AHE42304.1 feoB 3D evidence: Experimental + AlphaFold DB model + ColabFold model UniProt A6TF32
Length 772
Pocket druggability 0.993
Direct ligand evidence 1 58 total records
Functional annotation 0 EC 4 GO
Target summary

Strong target candidate with converging metabolic, structural and chemical evidence.

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
2.4% 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.

Localization

Localization
CytoplasmicMembrane

Structure confidence

ColabFold pLDDT
82.6 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket 0.993
Structure A6TF32
Pocket Pocket 16
P2Rank 0.952
Structure A6TF32
Pocket Pocket 1
ColabFold model
FPocket 0.971 · Pocket 63
P2Rank 0.863 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 112 / 4744 genomes with a hit
Prevalence 2.4%

Cross-references

External database identifiers for this protein, its structures, ligands, and metabolic reactions.

Sequence

Primary amino-acid sequence viewer.

MQKLTVGLIGNPNSGKTTLFNQLTGARQRVGNWAGVTVERKEGIFATTDHQVTLVDLPGTYSLTTISSQTSLDEQIACHYILSGDADMLINVVDASNLERNLYLTLQLLELGIPCVVALNMLDIAEKQQVRIDIDALAARLGCPVIPLVSTRGRGIEALKIALDRHQANSDLELVHYPQPLLREADLLAQQMSAQIPTRQRRWLGLQMLEGDIYSRAYAGDAADKLDIALANLSDEIDDPALHIADARYQTIAAICDAVSNTLTAEPSRFTAAMDKVILNRFLGLPIFLFVMYLMFLLAINIGGALQPIFDAGSVAIFVHGIQWLGYALHFPDWLTVFLAQGIGGGINTVLPLVPQIGMMYLFLSFLEDSGYMARAAFVMDRLMQALGLPGKSFVPLIVGFGCNVPSVMGARTLDAPRERLMTIMMAPFMSCGARLAIFAVFAAAFFGQNGALAVFSLYVLGIVMAILTGLMLKHTIMRGEASPFVMELPVYHVPHIKSLIIQTWQRLKGFVLRAGKVIVIVSIFLSALNSFSLSGKVVDNINDSALASVSRVITPVFKPIGVHEDNWQATVGLFTGAMAKEVVVGTLNTLYTAEDIQNEEFNPQTFSLGEELLAAVDETWQGLKDTFSLSVLANPIEASKGDGEMATGAMGVMGSKFGSAAAAYSYLIFVLLYIPCISVMGAIARESSRGWMTFSILWGLNIAYSLSTLYYQTVSFSDHPRYSLVCILAVVLFNVVLFGLLRRARSRVDVSLLATRKTPASCCSSPAGDCH

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Gene Ontology (GO)

4
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0015093 Enables the transfer of ferrous iron (Fe(II) or Fe2+) ions from one side of a membrane to the other.
  • GO:0006826 The directed movement of iron (Fe) ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
  • GO:0005525 Binding to GTP, guanosine triphosphate.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

58 records
Show feature table
Start End DB Term Name
455 507 Pfam PF07664 Ferrous iron transport protein B C terminus
455 507 InterPro IPR011640 Ferrous iron transport protein B, C-terminal
743 772 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
511 529 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
27 45 PRINTS PR00326 GTP1/OBG GTP-binding protein family signature
27 45 InterPro IPR006073 GTP binding domain
6 26 PRINTS PR00326 GTP1/OBG GTP-binding protein family signature
6 26 InterPro IPR006073 GTP binding domain
179 259 Pfam PF17910 FeoB cytosolic helical domain
179 259 InterPro IPR041069 FeoB, cytosolic helical domain
723 742 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
415 425 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
277 299 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
686 691 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
309 331 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
530 663 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
691 713 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
282 306 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
448 452 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
365 393 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
386 408 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
175 274 Gene3D G3DSA:1.10.287.1770 -
429 447 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
312 331 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 174 Gene3D G3DSA:3.40.50.300 -
1 174 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
1 719 PANTHER PTHR43185 FERROUS IRON TRANSPORT PROTEIN B
474 510 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
451 473 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
712 722 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
344 366 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
5 160 Pfam PF02421 Ferrous iron transport protein B
5 160 InterPro IPR030389 FeoB-type guanine nucleotide-binding (G) domain
394 414 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
307 311 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
510 532 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
332 342 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
664 685 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
4 167 SUPERFAMILY SSF52540 P-loop containing nucleoside triphosphate hydrolases
4 167 InterPro IPR027417 P-loop containing nucleoside triphosphate hydrolase
723 742 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
3 175 FunFam G3DSA:3.40.50.300:FF:000426 Ferrous iron transport protein B
10 687 NCBIfam TIGR00437 ferrous iron transport protein B
10 687 InterPro IPR003373 Ferrous iron transport protein B
3 169 ProSiteProfiles PS51711 FeoB-type guanine nucleotide-binding (G) domain profile.
3 169 InterPro IPR030389 FeoB-type guanine nucleotide-binding (G) domain
1 281 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
453 473 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
692 711 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
662 684 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
343 364 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
353 443 Pfam PF07670 Nucleoside recognition
353 443 InterPro IPR011642 Nucleoside transporter/FeoB GTPase, Gate domain
512 689 Pfam PF07670 Nucleoside recognition
512 689 InterPro IPR011642 Nucleoside transporter/FeoB GTPase, Gate domain
8 165 CDD cd01879 FeoB
8 165 InterPro IPR030389 FeoB-type guanine nucleotide-binding (G) domain
426 447 Phobius TRANSMEMBRANE 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.

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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

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.314
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Surrounding area
Site 2 P2Rank #2
0.177
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Surrounding area
Site 3 P2Rank #3
0.164
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Surrounding area
Site 4 P2Rank #4
0.055
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Surrounding area
Site 5 P2Rank #5
0.016
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Surrounding area
All structural evidence 3 experimental · 2 predicted

Structural evidence

3 + 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
PDB 2WIA
X-ray A Viewing
PDB 2WIB
X-ray A Loaded
PDB 2WIC
X-ray A Loaded
AlphaFold DB AF_A6TF32
AlphaFold DB full sequence Loaded
ColabFold KP13_00684
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.

58 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 1 same-protein records
Transferred evidence 7 records from similar proteins
Structural ligands 8 1 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
GNP PDB co-crystal 522.2 Da · LogP -2.76 · TPSA 301.9 Open detail RCSB PDB
AGO PDB via homolog Detail RCSB PDB
ALF PDB via homolog Detail RCSB PDB
BGO PDB via homolog Detail RCSB PDB
FLC PDB via homolog Detail RCSB PDB

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.

Show only:
Ligand Source crystal MW · LogP · TPSA Lipinski PAINS SMILES
GNP RCSB PDB 522.2 Da LogP -2.76 TPSA 301.9 3 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=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.