Protein target profile

VK055_4303

acetate kinase

Genome: KpATCC43816 Gene: ackA2 AIK82848.1 3D evidence: Experimental + ColabFold model Metabolism 2 reactions UniProt A6TDE9
Length 404
Pocket druggability 0.855
Metabolic reactions 2
Chokepoint No
Direct ligand evidence 0 59 total records
Functional annotation 0 EC 7 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
6.8% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
53.046 Higher values support similarity to known essential genes.
DEG E-value
1.32e-155 Smaller values mean stronger essential-gene similarity.

Localization

Localization
Cytoplasmic

Structure confidence

ColabFold pLDDT
96.5 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

PDB experimental structure

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 0.855
Structure 7FJA
Pocket Pocket 2
P2Rank 0.682
Structure 7FJ8
Pocket Pocket 1
ColabFold model
FPocket 0.206 · Pocket 1
P2Rank 0.804 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 321 / 4744 genomes with a hit
Prevalence 6.8%

Cross-references

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

Metabolic context

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

Explore metabolic network

Metabolic context: more central than 89.4% of genes in this genome, no human homolog detected.

Relative network centrality 89.4% more central than 89.4% of genes in this genome
Chokepoint Not a chokepoint
Catalyzed reactions

2 reactions 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.

MTYKIMAINAGSSSLKFQLLNMPQGALLCQGLIERIGLPEARFTLKTSAQKWQETLPIADHHEAVTLLLEALTGRGILSSLQEIDGVGHRVAHGGERFKDAALVCDDTLREIERLAELAPLHNPVNALGIRLFRQLLPAVPAVAVFDTAFHQTLAPEAWLYPLPWRYYAELGIRRYGFHGTSHHYVSSALAEKLGVPLSALRVVSCHLGNGCSVCAIKGGQSVNTSMGFTPQSGVMMGTRSGDIDPSILPWLVEKEGKSAQQLSQLLNNESGLLGVSGVSSDYRDVEQAADAGNERAALALSLFAERIRATIGSYIMQMGGLDALIFTGGIGENSARARATICRNLHFLGLALDDEKNQRSATFIQADNALVKVAVINTNEELMIARDVMRLALPQARELAVSA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

7 GO

Gene Ontology (GO)

7
  • GO:0016774 Catalysis of the transfer of a phosphorus-containing group from one compound (donor) to a carboxyl group (acceptor).
  • GO:0006082 The chemical reactions and pathways involving organic acids, any acidic compound containing carbon in covalent linkage.
  • GO:0016301 Catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
  • GO:0008980 Catalysis of the reaction: ATP + propanoate = ADP + propanoyl phosphate.
  • GO:0051144 The chemical reactions and pathways resulting in the breakdown of propanediol, a sweet, colorless, viscous, hygroscopic liquid with the formula CH3-CHOH-CH2OH.
  • 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:0019543 The chemical reactions and pathways resulting in the breakdown of propionate, the anion derived from propionic acid.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

34 records
Show feature table
Start End DB Term Name
157 392 SUPERFAMILY SSF53067 Actin-like ATPase domain
157 392 InterPro IPR043129 ATPase, nucleotide binding domain
1 195 Gene3D G3DSA:3.30.420.40 -
4 195 SUPERFAMILY SSF53067 Actin-like ATPase domain
4 195 InterPro IPR043129 ATPase, nucleotide binding domain
198 399 Gene3D G3DSA:3.30.420.40 -
4 387 Pfam PF00871 Acetokinase family
4 387 InterPro IPR000890 Aliphatic acid kinase, short-chain
1 398 Hamap MF_00020 Acetate kinase [ackA].
1 398 InterPro IPR004372 Acetate/propionate kinase
203 224 PRINTS PR00471 Acetate kinase family signature
203 224 InterPro IPR000890 Aliphatic acid kinase, short-chain
322 338 PRINTS PR00471 Acetate kinase family signature
322 338 InterPro IPR000890 Aliphatic acid kinase, short-chain
5 16 PRINTS PR00471 Acetate kinase family signature
5 16 InterPro IPR000890 Aliphatic acid kinase, short-chain
374 386 PRINTS PR00471 Acetate kinase family signature
374 386 InterPro IPR000890 Aliphatic acid kinase, short-chain
173 186 PRINTS PR00471 Acetate kinase family signature
173 186 InterPro IPR000890 Aliphatic acid kinase, short-chain
300 313 PRINTS PR00471 Acetate kinase family signature
300 313 InterPro IPR000890 Aliphatic acid kinase, short-chain
3 393 NCBIfam TIGR00016 acetate/propionate family kinase
3 393 InterPro IPR004372 Acetate/propionate kinase
1 393 PANTHER PTHR21060 ACETATE KINASE
1 393 InterPro IPR000890 Aliphatic acid kinase, short-chain
1 396 PIRSF PIRSF000722 Acetate_prop_kin
1 396 InterPro IPR004372 Acetate/propionate kinase
203 220 ProSitePatterns PS01076 Acetate and butyrate kinases family signature 2.
203 220 InterPro IPR023865 Aliphatic acid kinase, short-chain, conserved site
5 16 ProSitePatterns PS01075 Acetate and butyrate kinases family signature 1.
5 16 InterPro IPR023865 Aliphatic acid kinase, short-chain, conserved site
1 392 Hamap MF_01882 Propionate kinase [pduW].
1 392 InterPro IPR024896 Propionate kinase PduW

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
0.682
Show in viewer
Surrounding area
Site 2 P2Rank #2
0.261
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Surrounding area
Site 3 P2Rank #3
0.093
Show in viewer
Surrounding area
Site 4 P2Rank #4
0.056
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Surrounding area
Site 5 P2Rank #5
0.046
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Surrounding area
All structural evidence 5 experimental · 1 predicted

Structural evidence

5 + 1

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 7FJ7
X-ray A Loaded
PDB 7FJ8
X-ray A Viewing
PDB 7FJ9
X-ray A Loaded
PDB 7FJA
X-ray A Loaded
PDB 7FJB
X-ray A Loaded
ColabFold VK055_4303
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.

59 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 9 records from similar proteins
Structural ligands 9 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
5GP PDB via homolog 363.2 Da · LogP -2.57 · TPSA 206.0 Open detail RCSB PDB
AF3 PDB via homolog Detail RCSB PDB
ANP PDB via homolog Detail RCSB PDB
APC PDB via homolog Detail RCSB PDB
AQP 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
5GP RCSB PDB O06961 363.2 Da LogP -2.57 TPSA 206.0 1 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)COP(=O)(O…
AF3 RCSB PDB P38502 84.0 Da LogP 0.88 TPSA 0.0 ✓ Ro5 ✓ Clean F[Al](F)F
ANP RCSB PDB O06961 506.2 Da LogP -2.06 TPSA 281.9 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
APC RCSB PDB A0QLU8 505.2 Da LogP -1.52 TPSA 269.9 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
AQP RCSB PDB O06961 587.2 Da LogP -1.51 TPSA 325.7 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
B4P RCSB PDB O06961 836.4 Da LogP -2.45 TPSA 434.0 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
PIS RCSB PDB P38502 193.0 Da LogP -0.26 TPSA 104.1 ✓ Ro5 ✓ Clean OP(=O)(O)O[P@](=O)(O)[S-]
PPI RCSB PDB O06961 74.1 Da LogP 0.48 TPSA 37.3 ✓ Ro5 ✓ Clean CCC(=O)O
SIN RCSB PDB A0QLU8 118.1 Da LogP -0.06 TPSA 74.6 ✓ Ro5 ✓ Clean C(CC(=O)O)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.