KpATCC43816 Protein target profile

isocitrate lyase

Accession: VK055_3078

Gene: aceA AIK81663.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 1 reaction UniProt A0A0H3GHC8
Length 434
Pocket druggability (P2Rank · AlphaFold DB model) 0.638
Metabolic reactions 1
Chokepoint No
Direct ligand evidence 0 66 total records
Functional annotation 1 EC 6 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
4.3% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
97.28 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) 0.638
Structure A0A0H3GHC8
Pocket Pocket 1
Druggability (FPocket) 0.795
Structure A0A0H3GHC8
Pocket Pocket 9
ColabFold model
P2Rank 0.58 · Pocket 1
FPocket 0.811 · Pocket 2
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 203 / 4744 genomes with a hit
Prevalence 4.3%

Metabolic context

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

Explore metabolic network

Metabolic context: more central than 95.0% of genes in this genome, no human homolog detected.

Relative network centrality 95.0% more central than 95.0% 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.

MKTRTQQIEELNKEWTNPRWEGITRPYSAEEVVKLRGSVNPECTLAQLGAAKLWRLLHGEAKKGYVNSLGALTGGQALQQAKAGIEAIYLSGWQVAADANLASSMYPDQSLYPANSVPAVVDRINNTFRRADQIQWSAGIEPNDPRFIDYFLPIVADAEAGFGGVLNAFELMKSMIEAGAAAVHFEDQLASVKKCGHMGGKVLVPTQEAIQKLVAARLAADVMGVPTLVIARTDADAADLITSDCDPYDREFITGDRTSEGFFRTHAGIEQAISRGLAYAPYADLVWCETSKPDLEQARRFAEAIHARFPGKLLAYNCSPSFNWKKNLDDKTIASFQQQLSDMGYKYQFITLAGIHSMWFNMFDLAHAYAQGEGMRHYVEKVQQPEFAAGPEGYTFVSHQQEVGTGYFDKVTTIIQGGTSSVTALTGSTEEEQF

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 6 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

6
  • 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:0019752 The chemical reactions and pathways involving carboxylic acids, any organic acid containing one or more carboxyl (COOH) groups or anions (COO-).
  • GO:0004451 Catalysis of the reaction: isocitrate = glyoxylate + succinate.
  • GO:0046872 Binding to a metal ion.
  • GO:0006097 A modification of the TCA cycle occurring in some plants and microorganisms, in which isocitrate is cleaved to glyoxylate and succinate. Glyoxylate can then react with acetyl-CoA to form malate.
  • GO:0006099 A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

20 records
Show feature table
Start End DB Term Name
53 368 CDD cd00377 ICL_PEPM
53 368 InterPro IPR039556 ICL/PEPM domain
4 434 PANTHER PTHR21631 ISOCITRATE LYASE/MALATE SYNTHASE
4 434 InterPro IPR006254 Isocitrate lyase
1 434 PIRSF PIRSF001362 ICL
1 434 InterPro IPR006254 Isocitrate lyase
4 417 SUPERFAMILY SSF51621 Phosphoenolpyruvate/pyruvate domain
4 417 InterPro IPR015813 Pyruvate/Phosphoenolpyruvate kinase-like domain superfamily
1 434 FunFam G3DSA:3.20.20.60:FF:000005 Isocitrate lyase
256 434 NCBIfam TIGR01346 isocitrate lyase
256 434 InterPro IPR006254 Isocitrate lyase
8 255 NCBIfam TIGR01346 isocitrate lyase
8 255 InterPro IPR006254 Isocitrate lyase
1 417 Gene3D G3DSA:3.20.20.60 -
1 417 InterPro IPR040442 Pyruvate kinase-like domain superfamily
193 198 ProSitePatterns PS00161 Isocitrate lyase signature.
193 198 InterPro IPR018523 Isocitrate lyase/phosphorylmutase, conserved site
8 255 Pfam PF00463 Isocitrate lyase family
257 434 Pfam PF00463 Isocitrate lyase family
257 434 InterPro IPR006254 Isocitrate lyase

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
0.638
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Surrounding area
Pocket 2 P2Rank #2
0.103
Likely same site as FPocket 1 4.5 Å 10 shared residues 71% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.086
Likely same site as FPocket 3 1.7 Å 13 shared residues 100% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.062
Likely same site as FPocket 7 3.7 Å 8 shared residues 80% of smaller site
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Surrounding area
Pocket 5 P2Rank #5
0.047
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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 #9
0.795
Show in viewer
Surrounding area
Pocket 2 FPocket #7
0.682
Likely same site as P2Rank 4 3.7 Å 8 shared residues 80% of smaller site
Show in viewer
Surrounding area
Pocket 3 FPocket #3
0.254
Likely same site as P2Rank 3 1.7 Å 13 shared residues 100% of smaller site
Show in viewer
Surrounding area
Pocket 4 FPocket #1
0.216
Likely same site as P2Rank 2 4.5 Å 10 shared residues 71% of smaller site
Show in viewer
Surrounding area
Residue sets
UniProt: Active site:200-200 Proton acceptor
UniProt: Binding site:162-162
UniProt: Binding site:201-202
UniProt: Binding site:237-237
UniProt: Binding site:322-326
UniProt: Binding site:356-356
UniProt: Binding site:96-98
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_A0A0H3GHC8
AlphaFold DB full sequence Viewing
ColabFold VK055_3078
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.

66 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 16 records from similar proteins
Structural ligands 9 0 loaded crystals
Measured bioactivity 7 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
3NP PDB via homolog 119.1 Da · LogP -0.26 · TPSA 80.4 Open detail RCSB PDB
GLV PDB via homolog Detail RCSB PDB
ICT PDB via homolog Detail RCSB PDB
MLA PDB via homolog Detail RCSB PDB
OXD 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
3NP RCSB PDB P9WKK7 119.1 Da LogP -0.26 TPSA 80.4 ✓ Ro5 ✓ Clean C(C[N+](=O)[O-])C(=O)O
GLV RCSB PDB P9WKK7 74.0 Da LogP -0.73 TPSA 54.4 ✓ Ro5 ✓ Clean C(=O)C(=O)O
ICT RCSB PDB A9WDE7 192.1 Da LogP -1.39 TPSA 132.1 ✓ Ro5 ✓ Clean C([C@@H]([C@H](C(=O)O)O)C(=O)O)C(=O)O
MLA RCSB PDB Q2YQA0 104.1 Da LogP -0.45 TPSA 74.6 ✓ Ro5 ✓ Clean C(C(=O)O)C(=O)O
OXD RCSB PDB P9WKK7 90.0 Da LogP -0.84 TPSA 74.6 ✓ Ro5 ✓ Clean C(=O)(C(=O)O)O
PYR RCSB PDB P0A9G6 88.1 Da LogP -0.34 TPSA 54.4 ✓ Ro5 ✓ Clean CC(=O)C(=O)O
SIN RCSB PDB P9WKK7 118.1 Da LogP -0.06 TPSA 74.6 ✓ Ro5 ✓ Clean C(CC(=O)O)C(=O)O
U9S RCSB PDB P9WKK7 132.1 Da LogP -1.08 TPSA 87.1 ✓ Ro5 ✓ Clean [C@@H]1([C@H](O1)C(=O)O)C(=O)O
VGX RCSB PDB P9WKK7 118.1 Da LogP -0.98 TPSA 74.6 ✓ Ro5 ✓ Clean C(CO)C(=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.

Cross-references

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