KpATCC43816 Protein target profile

3D-(3,5/4)-trihydroxycyclohexane-1,2-dione hydrolase

Accession: VK055_2778

Gene: iolD AIK81367.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 1 reaction UniProt A0A0H3GLT3
Length 646
Pocket druggability (P2Rank · AlphaFold DB model) 0.838
Metabolic reactions 1
Chokepoint Yes
Direct ligand evidence 0 77 total records
Functional annotation 0 EC 5 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
Hit
Human identity (%)
31.818 Lower values reduce human off-target concern.
Human E-value
1.05e-07
Gut microbiome similarity
5.1% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
97.3 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) 0.838
Structure A0A0H3GLT3
Pocket Pocket 1
Druggability (FPocket) 0.87
Structure A0A0H3GLT3
Pocket Pocket 9
ColabFold model
P2Rank 0.839 · Pocket 1
FPocket 0.992 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 241 / 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

Attractive metabolic target: catalyzes a consuming chokepoint reaction in Inositol phosphate metabolism, no isoenzyme backup detected, more central than 91.1% of genes in this genome.

Relative network centrality 91.1% more central than 91.1% of genes in this genome
Chokepoint Chokepoint gene
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.

MGKLRLTTAQALVKFLDNQYLEVDGVELKFVKGIFAIFGHGNVLGLGQALEQDSGDMRVYQGRNEQGMAHAATGFARQALRRQIIACTSSIGPGAANMITAAGTASANRIPLLLLPGDVFATRQPDPVLQQIEQSYDLSISTNDAFRAVSKYWDRITRPEQLMSACINAMRVLTDPAETGAVTLCLPQDVQGEAWDYPESFFARRVHRLDRRPASAAQLADAVAAIKGSRKPLIVCGGGVKYSGAGEALSRFAERYGVPFAETQAGKGTVVSSHPLNVGGVGETGCLAANLLAKEADLVIGVGTRFSDFTTASKWIFQHPEVRFLNINVSNFDAWKLDGIAMLADAREAMTALDAALADSGWQAGWGAQIESVQSRQLKETQRVYQAVWQEKSFVPEIDDHLDRESVYREFRQITDSTLTQSSVLGVLNETLPAEAVIVAAAGSLPGDLQRVWRNRAENTYHVEYGYSCMGYEVNAALGVKLAQPQSEVYSLVGDGSFMMLHSELVTSLQERAKINVVLFDNMANGCINNLQMEHGMDSFGTEFRYRQPETGQLQGGLVPVDFATIAAGYGCKTWRVTTLDELRHALDAARRETVSTLIDIKVLPKTMVHKYGSWWNVGVAQTALSERIRKVAQMINEKRAQARDY

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
Cytoplasmic

Gene Ontology (GO)

5
  • GO:0016823 Catalysis of the hydrolysis of any carbon-carbon bond in a ketonic substance, a substance containing a keto (C=O) group.
  • 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:0030976 Binding to thiamine pyrophosphate, the diphosphoric ester of thiamine. Acts as a coenzyme of several (de)carboxylases, transketolases, and alpha-oxoacid dehydrogenases.
  • GO:0019310 The chemical reactions and pathways resulting in the breakdown of inositol, 1,2,3,4,5,6-cyclohexanehexol, a growth factor for animals and microorganisms.
  • GO:0000287 Binding to a magnesium (Mg) ion.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

23 records
Show feature table
Start End DB Term Name
185 367 SUPERFAMILY SSF52467 DHS-like NAD/FAD-binding domain
185 367 InterPro IPR029035 DHS-like NAD/FAD-binding domain superfamily
419 630 SUPERFAMILY SSF52518 Thiamin diphosphate-binding fold (THDP-binding)
419 630 InterPro IPR029061 Thiamin diphosphate-binding fold
214 393 Gene3D G3DSA:3.40.50.1220 -
409 641 Gene3D G3DSA:3.40.50.970 -
478 497 ProSitePatterns PS00187 Thiamine pyrophosphate enzymes signature.
478 497 InterPro IPR000399 TPP-binding enzyme, conserved site
3 208 SUPERFAMILY SSF52518 Thiamin diphosphate-binding fold (THDP-binding)
3 208 InterPro IPR029061 Thiamin diphosphate-binding fold
442 601 Pfam PF02775 Thiamine pyrophosphate enzyme, C-terminal TPP binding domain
442 601 InterPro IPR011766 Thiamine pyrophosphate enzyme, TPP-binding
5 644 NCBIfam TIGR04377 3D-(3,5/4)-trihydroxycyclohexane-1,2-dione acylhydrolase (decyclizing)
5 644 InterPro IPR030817 3,5/4-Trihydroxycyclohexa-1,2-dione hydrolase
220 353 Pfam PF00205 Thiamine pyrophosphate enzyme, central domain
220 353 InterPro IPR012000 Thiamine pyrophosphate enzyme, central domain
10 188 CDD cd07035 TPP_PYR_POX_like
7 196 Pfam PF02776 Thiamine pyrophosphate enzyme, N-terminal TPP binding domain
7 196 InterPro IPR012001 Thiamine pyrophosphate enzyme, N-terminal TPP-binding domain
421 624 CDD cd02003 TPP_IolD
5 608 PANTHER PTHR18968 THIAMINE PYROPHOSPHATE ENZYMES
5 608 InterPro IPR045229 Thiamine pyrophosphate enzyme
3 209 Gene3D G3DSA:3.40.50.970 -

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
0.838
Likely same site as FPocket 9 4.4 Å 23 shared residues 92% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.798
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Surrounding area
Pocket 3 P2Rank #3
0.639
Likely same site as FPocket 9 5.6 Å 18 shared residues 100% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.14
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Surrounding area
Pocket 5 P2Rank #5
0.096
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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
0.87 Unusual size
Likely same site as P2Rank 1 4.4 Å 23 shared residues 92% of smaller site
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Surrounding area
Pocket 2 FPocket #2
0.676
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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_A0A0H3GLT3
AlphaFold DB full sequence Viewing
ColabFold VK055_2778
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.

77 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 27 records from similar proteins
Structural ligands 19 0 loaded crystals
Measured bioactivity 8 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
1MM PDB via homolog 381.4 Da · LogP 0.49 · TPSA 149.5 Open detail RCSB PDB
AUJ PDB via homolog Detail RCSB PDB
AYD PDB via homolog Detail RCSB PDB
CIE PDB via homolog Detail RCSB PDB
CO2 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
1MM RCSB PDB P07342 381.4 Da LogP 0.49 TPSA 149.5 ✓ Ro5 ✓ Clean Cc1nc(nc(n1)OC)NC(=O)NS(=O)(=O)c2ccccc2C(=O)OC
AUJ RCSB PDB P07342 Cc1ncc(c(n1)N)C[N]2=C(SC(=C2C)CCOP(=O)(O)OP(=O)…
AYD RCSB PDB P07342 382.3 Da LogP 0.98 TPSA 177.1 ✓ Ro5 ✓ Clean Cc1ncc(c(n1)N)CN/C(=C/CCO[P@@](=O)(O)OP(=O)(O)O…
CIE RCSB PDB P07342 414.8 Da LogP 1.83 TPSA 136.6 ✓ Ro5 ✓ Clean CCOC(=O)c1ccccc1S(=O)(=O)NC(=O)Nc2nc(cc(n2)Cl)OC
CO2 RCSB PDB P07342 44.0 Da LogP -0.58 TPSA 34.1 ✓ Ro5 ✓ Clean C(=O)=O
DTT RCSB PDB P07342 154.3 Da LogP -0.43 TPSA 40.5 ✓ Ro5 ✓ Clean C([C@@H]([C@H](CS)O)O)S
F50 RCSB PDB P07342 76.1 Da LogP 0.02 TPSA 46.5 ✓ Ro5 ✓ Clean CC(=O)OO
HTL RCSB PDB P07342 467.4 Da LogP 1.04 TPSA 186.0 ✓ Ro5 ✓ Clean Cc1c(sc([n+]1Cc2cnc(nc2N)C)C(=O)C)CCO[P@@](=O)(…
NSP RCSB PDB P07342 138.2 Da LogP -0.17 TPSA 77.8 ✓ Ro5 ✓ Clean Cc1ncc(c(n1)N)CN
OXY RCSB PDB P07342 32.0 Da LogP 0.07 TPSA 34.1 ✓ Ro5 ✓ Clean O=O
P22 RCSB PDB P07342 206.0 Da LogP 0.23 TPSA 113.3 ✓ Ro5 ✓ Clean CCO[P@](=O)(O)OP(=O)(O)O
P23 RCSB PDB P07342 220.1 Da LogP 0.62 TPSA 113.3 ✓ Ro5 ✓ Clean CCCO[P@@](=O)(O)OP(=O)(O)O
P25 RCSB PDB P07342 248.1 Da LogP 1.40 TPSA 113.3 ✓ Ro5 ✓ Clean CCCCCO[P@@](=O)(O)OP(=O)(O)O
PXD RCSB PDB P07342 483.4 Da LogP 2.61 TPSA 116.9 ✓ Ro5 ✓ Clean COc1cnc(n2c1nc(n2)NS(=O)(=O)c3c(cccc3OCC(F)F)C(…
PYD RCSB PDB P07342 123.2 Da LogP 0.68 TPSA 51.8 ✓ Ro5 ✓ Clean Cc1cnc(nc1N)C
PYR RCSB PDB P07342 88.1 Da LogP -0.34 TPSA 54.4 ✓ Ro5 ✓ Clean CC(=O)C(=O)O
TP9 RCSB PDB P07342 412.3 Da LogP -0.03 TPSA 182.8 1 viol. ✓ Clean Cc1ncc(c(n1)N)CN/C(=C(/CCO[P@](=O)([O-])O[P@@](…
YF3 RCSB PDB P07342 212.3 Da LogP 0.78 TPSA 63.8 ✓ Ro5 ✓ Clean Cc1ncc(c(n1)N)CNC(C)CS
YF4 RCSB PDB P07342 180.3 Da LogP 0.82 TPSA 55.0 ✓ Ro5 ✓ Clean CCN(C)Cc1cnc(nc1N)C

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.