KpATCC43816 Protein target profile

phosphoenolpyruvate synthase

Accession: VK055_0297

Gene: ppsA AIK78923.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 1 reaction UniProt A0A0H3GPJ4
Length 792
Pocket druggability (P2Rank · AlphaFold DB model) 0.679
Metabolic reactions 1
Chokepoint No
Direct ligand evidence 0 57 total records
Functional annotation 0 EC 7 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
No hit
Gut microbiome similarity
5.1% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
67.368 Higher values support similarity to known essential genes.
DEG E-value
0.0 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
89.87 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) 0.679
Structure A0A0H3GPJ4
Pocket Pocket 1
Druggability (FPocket) 0.453
Structure A0A0H3GPJ4
Pocket Pocket 12
ColabFold model
P2Rank 0.564 · Pocket 1
FPocket 0.249 · Pocket 4
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 240 / 4744 genomes with a hit
Prevalence 5.1%

Metabolic context

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

Explore metabolic network

Metabolic context: no human homolog detected.

Relative network centrality 0.0% more central than 0.0% of genes in this genome
Chokepoint Not a chokepoint
Catalyzed reaction

1 reaction mapped to this gene in the metabolic model. Open the full network to see each one, with substrates/products and the reaction-reaction map.

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MSNNGSSPLVLWYNQLGMNDVDRVGGKNASLGEMITNLSGMGVSVPNGFATTADAFNQFLDQSGVNQRIYALLDETDIDDVSALAKAGAQIRQWIIDTPFQSELENAIRDAYDLLSADDAEASFAVRSSATAEDMPDASFAGQQETFLNVQGFDAVLVAVKHVFASLFNDRAISYRVHQGYDHRGVALSAGVQRMVRSDLASSGVMFSIDTESGFDQVVFITSAWGLGEMVVQGAVNPDEFYVHKPTLAAGRPAIVRRTMGSKKIRMVYAPTQEHGKQVRIEDVPQAQRDIFSLSNEEVQELAKQAVQIEKHYGRPMDIEWAKDGHTGKLFIVQARPETVRSRGQVMERYTLHAQGQIIAEGRAIGHRIGAGPVKVIHDISEMNRIEPGDVLVTDMTDPDWEPIMKKASAIVTNRGGRTCHAAIIARELGIPAVVGCGDATDRIQENQNVTVSCAEGDTGYVYAELLDFSVKSSSVGDMPDLPLKVMMNVGNPDRAFDFACLPNEGVGLARLEFIINRMIGVHPRALLEFDDQEPGLQNEIRELMKGYDSPREFYVGRLTEGIATLGAAFYPKRVIVRLSDFKSNEYANLVGGERYEPEEENPMLGFRGAGRYVSESFRDCFALECEAMKRVRNDMGLTNVEVMVPFVRTVAQAKAVVEELERQGLKRGENGLKIIMMCEIPSNALLAEQFLEYFDGFSIGSNDMTQLALGLDRDSGVVSELFDERNDAVKALLSMAIRAAKKQGKYVGICGQGPSDHEDFAAWLMEEGIDSLSLNPDTVVQTWLGLAELKK

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

7 GO

Subcellular localization

Localization
Cytoplasmic

Gene Ontology (GO)

7
  • GO:0016772 Catalysis of the transfer of a phosphorus-containing group from one compound (donor) to another (acceptor).
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0003824 Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
  • GO:0016301 Catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
  • GO:0008986 Catalysis of the reaction: ATP + H2O + pyruvate = AMP + 2 H+ + phosphate + phosphoenolpyruvate.
  • GO:0016310 The process of introducing a phosphate group into a molecule, usually with the formation of a phosphoric ester, a phosphoric anhydride or a phosphoric amide.
  • GO:0006090 The chemical reactions and pathways involving pyruvate, 2-oxopropanoate.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

31 records
Show feature table
Start End DB Term Name
386 457 Pfam PF00391 PEP-utilising enzyme, mobile domain
386 457 InterPro IPR008279 PEP-utilising enzyme, mobile domain
4 792 PIRSF PIRSF000854 PEP_synthase
4 792 InterPro IPR006319 Phosphoenolpyruvate synthase
360 479 Gene3D G3DSA:3.50.30.10 Phosphohistidine domain
350 468 SUPERFAMILY SSF52009 Phosphohistidine domain
350 468 InterPro IPR036637 Phosphohistidine domain superfamily
198 359 FunFam G3DSA:3.30.470.20:FF:000017 Phosphoenolpyruvate synthase
361 479 FunFam G3DSA:3.50.30.10:FF:000002 Phosphoenolpyruvate synthase
9 792 NCBIfam TIGR01418 pyruvate, water dikinase
9 792 InterPro IPR006319 Phosphoenolpyruvate synthase
696 714 ProSitePatterns PS00742 PEP-utilizing enzymes signature 2.
696 714 InterPro IPR023151 PEP-utilising enzyme, conserved site
198 359 Gene3D G3DSA:3.30.470.20 -
6 197 FunFam G3DSA:3.30.1490.20:FF:000010 Phosphoenolpyruvate synthase
6 197 Gene3D G3DSA:3.30.1490.20 -
6 197 InterPro IPR013815 ATP-grasp fold, subdomain 1
480 790 Gene3D G3DSA:3.20.20.60 -
480 790 InterPro IPR040442 Pyruvate kinase-like domain superfamily
480 791 FunFam G3DSA:3.20.20.60:FF:000010 Phosphoenolpyruvate synthase
416 427 ProSitePatterns PS00370 PEP-utilizing enzymes phosphorylation site signature.
416 427 InterPro IPR018274 PEP-utilising enzyme, active site
2 791 PANTHER PTHR43030 PHOSPHOENOLPYRUVATE SYNTHASE
2 791 InterPro IPR006319 Phosphoenolpyruvate synthase
22 349 Pfam PF01326 Pyruvate phosphate dikinase, AMP/ATP-binding domain
22 349 InterPro IPR002192 Pyruvate phosphate dikinase, AMP/ATP-binding
484 784 Pfam PF02896 PEP-utilising enzyme, PEP-binding domain
484 784 InterPro IPR000121 PEP-utilising enzyme, C-terminal
474 790 SUPERFAMILY SSF51621 Phosphoenolpyruvate/pyruvate domain
474 790 InterPro IPR015813 Pyruvate/Phosphoenolpyruvate kinase-like domain superfamily
7 386 SUPERFAMILY SSF56059 Glutathione synthetase ATP-binding domain-like

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
0.679
Likely same site as FPocket 12 3.6 Å 26 shared residues 96% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.594
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Surrounding area
Pocket 3 P2Rank #3
0.3
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Surrounding area
Pocket 4 P2Rank #4
0.261
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Surrounding area
Pocket 5 P2Rank #5
0.155
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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 #12
0.453 Unusual size
Likely same site as P2Rank 1 3.6 Å 26 shared residues 96% of smaller site
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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_A0A0H3GPJ4
AlphaFold DB full sequence Viewing
ColabFold VK055_0297
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.

57 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 7 records from similar proteins
Structural ligands 7 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
5WP PDB via homolog 897.0 Da · LogP 4.39 · TPSA 252.4 Open detail RCSB PDB
6NQ PDB via homolog Detail RCSB PDB
NH4 PDB via homolog Detail RCSB PDB
OXL PDB via homolog Detail RCSB PDB
PEP PDB via homolog Detail RCSB PDB

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
5WP RCSB PDB A0A0X1KHF9 897.0 Da LogP 4.39 TPSA 252.4 3 viol. ✓ Clean CCOc1c(c(c2c3c1[C@@H](O/C=C/[C@@H]([C@H]([C@H](…
6NQ RCSB PDB Q42736 569.1 Da LogP -0.65 TPSA 261.7 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
NH4 RCSB PDB P22983 18.0 Da LogP 0.38 TPSA 36.5 ✓ Ro5 ✓ Clean [NH4+]
OXL RCSB PDB P08839 88.0 Da LogP -3.51 TPSA 80.3 ✓ Ro5 ✓ Clean C(=O)(C(=O)[O-])[O-]
PEP RCSB PDB Q42736 168.0 Da LogP -0.31 TPSA 104.1 ✓ Ro5 ✓ Clean C=C(C(=O)O)OP(=O)(O)O
PO3 RCSB PDB P08839 79.0 Da LogP -1.64 TPSA 63.2 ✓ Ro5 ✓ Clean [O-][P-](=O)[O-]
PPR RCSB PDB P22983 168.0 Da LogP -1.18 TPSA 111.9 ✓ Ro5 ✓ Clean C(C(=O)C(=O)O)P(=O)(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.