KpATCC43816 Protein target profile

phosphate transporter family protein

Accession: VK055_3612

Gene: AIK82167.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GZT1
Length 498
Pocket druggability (P2Rank · AlphaFold DB model) 0.701
Direct ligand evidence 0 51 total records
Functional annotation 0 EC 6 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
Hit
Human identity (%)
28.402 Lower values reduce human off-target concern.
Human E-value
3.63e-08
Gut microbiome similarity
2.7% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
N
DEG identity (%)
32.54 Higher values support similarity to known essential genes.

Structure confidence

ColabFold pLDDT
86.17 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) 0.701
Structure A0A0H3GZT1
Pocket Pocket 1
Druggability (FPocket) 0.913
Structure A0A0H3GZT1
Pocket Pocket 39
ColabFold model
P2Rank 0.63 · Pocket 1
FPocket 0.207 · Pocket 10
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 126 / 4744 genomes with a hit
Prevalence 2.7%

Metabolic context

Reactions catalyzed, pathway membership, and centrality in the genome-scale metabolic network.

This protein is not associated with the imported metabolic network for this genome.

Browse the genome's metabolic network

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MLHLFAGLDLHTGLLLLLALAFVLFYEAINGFHDTANAVATVIYTRAMRSQLAVAMAALFNFFGVLLGGLSVAYAIVHMLPTDLLLNMGSAHGLAMVFSMLLAAIIWNLGTWYFGLPASSSHTLIGAIIGIGLTNALMTGTSVVDALNIPKVIGIFASLIISPIVGLVIAGGLIFLLRRYWSGTKKRARIHLTPAEREKKDGKKKPPFWTRIALILSAIGVSFSHGANDGQKGIGLVMLVLIGVAPAGFVVNMNASGYEITRTRDAVNNVETFFQQRPELLKKATGVDQLVPSPDTNTAANGEFHCHPANTINALDRVKTMLTGVENYESLKPEQRGQLRRIMLCISDTTDKVAKLPDVSADDQRLLKKLKTDMLSTIEYAPIWIIMAVALALGIGTMIGWRRVATTIGEKIGKKGMTYAQGMSAQMTAAVSIGLASYTGMPVSTTHVLSSSVAGTMLVDGGGLQKKTVTSILMAWVLTLPAAIILSGVLYWLSLKLI

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

6
  • GO:0005315 Enables the transfer of phosphate ions from one side of a membrane to the other, up its concentration gradient. The transporter binds the solute and undergoes a series of conformational changes. Transport works equally well in either direction and is driven by a chemiosmotic source of energy. Secondary active transporters include symporters and antiporters.
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0006817 The directed movement of phosphate ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
  • 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:0015293 Enables the active transport of a solute across a membrane by a mechanism whereby two or more species are transported together in the same direction in a tightly coupled process not directly linked to a form of energy other than chemiosmotic energy.
  • GO:0035435 The process in which a phosphate is transported across a membrane.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

34 records
Show feature table
Start End DB Term Name
228 232 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
378 400 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
208 227 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
233 255 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
111 121 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
1 11 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
199 495 PANTHER PTHR11101 PHOSPHATE TRANSPORTER
199 495 InterPro IPR001204 Phosphate transporter
402 472 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
472 494 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
10 32 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
207 224 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
494 498 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
89 110 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
234 256 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
52 77 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
12 32 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
141 151 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
378 401 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
52 74 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
33 51 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
122 140 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
30 487 Pfam PF01384 Phosphate transporter family
30 487 InterPro IPR001204 Phosphate transporter
94 116 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
178 207 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
473 493 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
78 88 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
123 145 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
152 177 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
155 177 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
256 377 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
1 498 NCBIfam NF033774 inorganic phosphate transporter PitA
1 498 InterPro IPR047818 Inorganic phosphate transporter PitA/PitB

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
0.701
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Surrounding area
Pocket 2 P2Rank #2
0.259
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Surrounding area
Pocket 3 P2Rank #3
0.237
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Surrounding area
Pocket 4 P2Rank #4
0.115
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Surrounding area
Pocket 5 P2Rank #5
0.097
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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 #39
0.913
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Surrounding area
Pocket 2 FPocket #25
0.636
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Surrounding area
Pocket 3 FPocket #11
0.581
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Surrounding area
Pocket 4 FPocket #36
0.425
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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_A0A0H3GZT1
AlphaFold DB full sequence Viewing
ColabFold VK055_3612
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.

51 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 1 records from similar proteins
Structural ligands 1 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
LMT PDB via homolog 510.6 Da · LogP -0.45 · TPSA 178.5 Open detail RCSB PDB
ZINC100053689 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC100053691 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC1501015302 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC2039285652 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
LMT RCSB PDB Q9WY99 510.6 Da LogP -0.45 TPSA 178.5 3 viol. ✓ Clean CCCCCCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1…

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.