Protein target profile

VK055_0843

trans-aconitate 2-methyltransferase

Genome: KpATCC43816 Gene: tam AIK79466.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 1 reaction UniProt A0A0H3GN69

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Length 253

Pocket druggability 0.978

Metabolic reactions 1

Chokepoint No

Direct ligand evidence 0 51 total records

Functional annotation 1 EC 3 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.

Main supporting evidence

No isoenzyme backup detected Imported GPR rules do not show an alternative enzyme for the catalyzed reaction set. No similar human protein detected The current BLAST sequence screen did not find a significant human match, lowering apparent off-target risk. Core gene across strains Marked as conserved by both pan-genome tools: Roary and CoreCruncher. Second pocket predictor agrees P2Rank predicted binding-site probability 0.96. Review the complete evidence below

Risks to review

Evidence coverage

Core evidence streams are available for this target.

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: 1.5% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG): N
DEG identity (%): 31.25 Higher values support similarity to known essential genes.

Localization

Localization: Cytoplasmic

Structure confidence

ColabFold pLDDT: 93.88 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

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 0.978

Structure A0A0H3GN69

Pocket Pocket 1

P2Rank 0.957

Structure A0A0H3GN69

Pocket Pocket 1

ColabFold model

FPocket 0.968 · Pocket 1

P2Rank 0.974 · Pocket 1

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 73 / 4744 genomes with a hit

Prevalence 1.5%

Cross-references

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

Sequence

UniProt A0A0H3GN69

Pathways

KEGG R05763 BioCyc RXN0-2441

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

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MADWNPSLYLQFDAERTRPAADLLSRVAHLQVEHAVDLGCGPGNSTRLLRAAWPLATIVGIDNSPAMLIQAAQALPDCEFINADIARWRPAQPPDVIYANASLQWLTDHETLFPHLVNQLADNGTLAVQMPDNWQEPSHTLMRQVASEMGLPDRGRQPLLPPAAWYDLLSRQGCEVDIWRTIYFHPLASHQAIVDWLQGTGLRPYLAGLDEQAGSAFLTRYLALLAAHYPLQCNGKVLLRFPRLFIVARKIAA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 3 GO

Enzyme Commission (EC)

2.1.1.144

Gene Ontology (GO)

GO:0030798 Catalysis of the reaction: S-adenosyl-L-methionine + trans-aconitate = (E)-3-(methoxycarbonyl)pent-2-enedioate + S-adenosyl-L-homocysteine.
GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
GO:0032259 The process in which a methyl group is covalently attached to a molecule.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

11 records

Show feature table

Start	End	DB	Term	Name
9	248	Gene3D	G3DSA:3.40.50.150	Vaccinia Virus protein VP39
9	248	InterPro	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily
132	232	Gene3D	G3DSA:1.10.150.290	-
132	232	InterPro	IPR023149	Trans-aconitate 2-methyltransferase, C-terminal
12	176	Pfam	PF13489	Methyltransferase domain
20	239	SUPERFAMILY	SSF53335	S-adenosyl-L-methionine-dependent methyltransferases
20	239	InterPro	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily
36	129	CDD	cd02440	AdoMet_MTases
3	245	PANTHER	PTHR43861	TRANS-ACONITATE 2-METHYLTRANSFERASE-RELATED
2	251	Hamap	MF_00560	Trans-aconitate 2-methyltransferase [tam].
2	251	InterPro	IPR023506	Trans-aconitate 2-methyltransferase

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 · FPocket

Druggability: high ≥ 0.7 · medium 0.4–0.69 · low < 0.4

Site 1 FPocket #1

0.978

Likely same site as P2Rank 1 0.4 Å 29 shared residues 91% of smaller site

Unusual size

Show in viewer

Surrounding area

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1

0.957

Likely same site as FPocket 1 0.4 Å 29 shared residues 91% of smaller site

Show in viewer

Surrounding area

Site 2 P2Rank #2

0.011

Show in viewer

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_A0A0H3GN69	AlphaFold DB	—	—	full sequence	—	Viewing
ColabFold VK055_0843	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

BEZ PDB via homolog 122.1 Da · LogP 1.38 · TPSA 37.3 Open detail RCSB PDB

ZINC3269660 ZINC proposed compound · Tanimoto 0.824 Detail ZINC

ZINC2504355 ZINC proposed compound · Tanimoto 0.778 Detail ZINC

ZINC1672966 ZINC proposed compound · Tanimoto 0.688 Detail ZINC

ZINC34057267 ZINC proposed compound · Tanimoto 0.684 Detail ZINC

Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in Target, use Open crystal to inspect it in the structure viewer.

No PDB structure with a co-crystallized ligand found for this exact protein.

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.

Ligand	Source crystal	UniProt (homolog)	MW · LogP · TPSA	Lipinski	PAINS	SMILES
BEZ RCSB PDB	3CCF	Q3MEY9	122.1 Da LogP 1.38 TPSA 37.3	✓ Ro5	✓ Clean	`c1ccc(cc1)C(=O)O`

Experimental bioactivity from ChEMBL measured directly on this protein. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

No ChEMBL bioactivity data found for this exact protein.

Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

No ChEMBL hits found through similar proteins.

Proposed virtual-screening candidates from ZINC. Score = Tanimoto similarity to a known binder (0–1; higher = more similar).

Ligand	Tanimoto	MW · LogP · TPSA	Lipinski	PAINS	SMILES
ZINC3269660 ZINC	0.824	254.2 Da LogP 2.45 TPSA 71.4	✓ Ro5	Alert	`O=C(O)c1ccc(C(=O)C(=O)c2ccccc2)cc1`
ZINC2504355 ZINC	0.778	226.2 Da LogP 2.62 TPSA 54.4	✓ Ro5	✓ Clean	`O=C(O)c1ccc(C(=O)c2ccccc2)cc1`
ZINC1672966 ZINC	0.688	210.2 Da LogP 2.75 TPSA 34.1	✓ Ro5	Alert	`O=C(C(=O)c1ccccc1)c1ccccc1`
ZINC34057267 ZINC	0.684	274.3 Da LogP 4.72 TPSA 37.3	✓ Ro5	✓ Clean	`O=C(O)c1ccc(-c2ccc(-c3ccccc3)cc2)cc1`
ZINC114185151 ZINC	0.647	298.2 Da LogP 2.15 TPSA 108.7	✓ Ro5	Alert	`O=C(O)c1ccc(C(=O)C(=O)c2ccc(C(=O)O)cc2)cc1`
ZINC1590838 ZINC	0.647	342.4 Da LogP 3.82 TPSA 68.3	✓ Ro5	Alert	`O=C(C(=O)c1ccc(C(=O)C(=O)c2ccccc2)cc1)c1ccccc1`
ZINC16133932 ZINC	0.647	474.5 Da LogP 4.88 TPSA 102.4	✓ Ro5	Alert	`O=C(C(=O)c1ccc(C(=O)C(=O)c2ccc(C(=O)C(=O)c3cccc…`
ZINC1070912 ZINC	0.611	286.3 Da LogP 4.15 TPSA 34.1	✓ Ro5	✓ Clean	`O=C(c1ccccc1)c1ccc(C(=O)c2ccccc2)cc1`
ZINC134079 ZINC	0.611	242.2 Da LogP 2.75 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)c1ccc(-c2ccc(C(=O)O)cc2)cc1`
ZINC1640789 ZINC	0.611	374.3 Da LogP 3.55 TPSA 108.7	✓ Ro5	✓ Clean	`O=C(O)c1ccc(C(=O)c2ccc(C(=O)c3ccc(C(=O)O)cc3)cc…`
ZINC2146859 ZINC	0.611	270.2 Da LogP 2.31 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)c1ccc(C(=O)c2ccc(C(=O)O)cc2)cc1`
ZINC3147211 ZINC	0.611	318.3 Da LogP 4.42 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)c1ccc(-c2ccc(-c3ccc(C(=O)O)cc3)cc2)cc1`
ZINC2539781 ZINC	0.600	382.1 Da LogP 4.24 TPSA 34.1	✓ Ro5	✓ Clean	`O=C(c1ccccc1)C(Br)(Br)C(=O)c1ccccc1`
ZINC100009533 ZINC	0.591	226.2 Da LogP 3.80 TPSA 62.0	✓ Ro5	Alert	`O=C(O)c1ccc(/N=N\c2ccccc2)cc1`
ZINC12956625 ZINC	0.591	226.2 Da LogP 3.80 TPSA 62.0	✓ Ro5	Alert	`O=C(O)c1ccc(N=Nc2ccccc2)cc1`
ZINC1601737 ZINC	0.591	213.2 Da LogP 3.13 TPSA 49.3	✓ Ro5	✓ Clean	`O=C(O)c1ccc(Nc2ccccc2)cc1`
ZINC1689689 ZINC	0.591	228.3 Da LogP 2.82 TPSA 61.4	✓ Ro5	✓ Clean	`O=C(O)c1ccc(NNc2ccccc2)cc1`
ZINC1697492 ZINC	0.591	212.2 Da LogP 2.98 TPSA 37.3	✓ Ro5	✓ Clean	`O=C(O)c1ccc(Cc2ccccc2)cc1`
ZINC169818652 ZINC	0.591	380.5 Da LogP 2.76 TPSA 37.3	✓ Ro5	✓ Clean	`O=C(O)c1ccc([Si](c2ccccc2)(c2ccccc2)c2ccccc2)cc1`
ZINC33759110 ZINC	0.591	224.3 Da LogP 3.56 TPSA 37.3	✓ Ro5	✓ Clean	`O=C(O)c1ccc(/C=C/c2ccccc2)cc1`
ZINC346053 ZINC	0.591	289.3 Da LogP 4.85 TPSA 40.5	✓ Ro5	✓ Clean	`O=C(O)c1ccc(N(c2ccccc2)c2ccccc2)cc1`
ZINC396612 ZINC	0.591	230.3 Da LogP 3.54 TPSA 37.3	✓ Ro5	✓ Clean	`O=C(O)c1ccc(Sc2ccccc2)cc1`
ZINC409186 ZINC	0.591	226.2 Da LogP 2.62 TPSA 54.4	✓ Ro5	✓ Clean	`O=C(O)c1cccc(C(=O)c2ccccc2)c1`
ZINC409394 ZINC	0.591	226.3 Da LogP 3.17 TPSA 37.3	✓ Ro5	✓ Clean	`O=C(O)c1ccc(CCc2ccccc2)cc1`
ZINC4299335 ZINC	0.591	222.2 Da LogP 2.78 TPSA 37.3	✓ Ro5	✓ Clean	`O=C(O)c1ccc(C#Cc2ccccc2)cc1`
ZINC4403618 ZINC	0.591	226.2 Da LogP 3.80 TPSA 62.0	✓ Ro5	Alert	`O=C(O)c1ccc(/N=N/c2ccccc2)cc1`
ZINC4802802 ZINC	0.591	288.3 Da LogP 4.57 TPSA 37.3	✓ Ro5	✓ Clean	`O=C(O)c1ccc(C(c2ccccc2)c2ccccc2)cc1`
ZINC5538754 ZINC	0.591	304.3 Da LogP 3.67 TPSA 57.5	✓ Ro5	✓ Clean	`O=C(O)c1ccc(C(O)(c2ccccc2)c2ccccc2)cc1`
ZINC60939 ZINC	0.591	214.2 Da LogP 3.18 TPSA 46.5	✓ Ro5	✓ Clean	`O=C(O)c1ccc(Oc2ccccc2)cc1`
ZINC254583 ZINC	0.583	242.2 Da LogP 2.60 TPSA 63.6	✓ Ro5	✓ Clean	`O=C(O)c1ccc(OC(=O)c2ccccc2)cc1`
ZINC43214128 ZINC	0.583	240.3 Da LogP 2.81 TPSA 54.4	✓ Ro5	✓ Clean	`O=C(O)c1ccc(CC(=O)c2ccccc2)cc1`
ZINC78349 ZINC	0.583	241.2 Da LogP 2.64 TPSA 66.4	✓ Ro5	✓ Clean	`O=C(O)c1ccc(NC(=O)c2ccccc2)cc1`
ZINC1718650 ZINC	0.579	238.2 Da LogP 2.32 TPSA 51.2	✓ Ro5	Alert	`O=C(C(=O)c1ccccc1)C(=O)c1ccccc1`
ZINC4530702 ZINC	0.579	224.3 Da LogP 3.14 TPSA 34.1	✓ Ro5	✓ Clean	`O=C(CC(=O)c1ccccc1)c1ccccc1`
ZINC96315996 ZINC	0.579	268.3 Da LogP 2.77 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)/C(=C(\C(=O)O)c1ccccc1)c1ccccc1`
ZINC1496851 ZINC	0.571	260.2 Da LogP 3.39 TPSA 34.1	✓ Ro5	✓ Clean	`O=C(c1ccccc1)C(F)(F)C(=O)c1ccccc1`
ZINC1602461 ZINC	0.571	223.5 Da LogP 3.24 TPSA 17.1	✓ Ro5	✓ Clean	`O=C(c1ccccc1)C(Cl)(Cl)Cl`
ZINC1726772 ZINC	0.571	252.3 Da LogP 3.78 TPSA 34.1	✓ Ro5	✓ Clean	`CC(C)(C(=O)c1ccccc1)C(=O)c1ccccc1`
ZINC207916 ZINC	0.571	270.2 Da LogP 2.31 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)c1cccc(C(=O)c2cccc(C(=O)O)c2)c1`
ZINC21298253 ZINC	0.571	358.3 Da LogP 0.38 TPSA 149.2	✓ Ro5	✓ Clean	`O=C(O)[C@@](O)(C(=O)c1ccccc1)[C@@](O)(C(=O)O)C(…`
ZINC21298260 ZINC	0.571	358.3 Da LogP 0.38 TPSA 149.2	✓ Ro5	✓ Clean	`O=C(O)[C@@](O)(C(=O)c1ccccc1)[C@](O)(C(=O)O)C(=…`
ZINC21298267 ZINC	0.571	358.3 Da LogP 0.38 TPSA 149.2	✓ Ro5	✓ Clean	`O=C(O)[C@](O)(C(=O)c1ccccc1)[C@](O)(C(=O)O)C(=O…`
ZINC3897007 ZINC	0.571	242.2 Da LogP 2.75 TPSA 74.6	✓ Ro5	✓ Clean	`O=C(O)c1cccc(-c2cccc(C(=O)O)c2)c1`
ZINC1670917 ZINC	0.565	228.2 Da LogP 2.47 TPSA 57.5	✓ Ro5	✓ Clean	`O=C(O)c1ccc([C@@H](O)c2ccccc2)cc1`
ZINC2043250 ZINC	0.565	228.2 Da LogP 2.47 TPSA 57.5	✓ Ro5	✓ Clean	`O=C(O)c1ccc([C@H](O)c2ccccc2)cc1`
ZINC289040 ZINC	0.565	262.3 Da LogP 2.22 TPSA 71.4	✓ Ro5	✓ Clean	`O=C(O)c1ccc(S(=O)(=O)c2ccccc2)cc1`
ZINC394370 ZINC	0.565	270.2 Da LogP 2.31 TPSA 91.7	✓ Ro5	✓ Clean	`O=C(O)c1ccc(C(=O)c2ccccc2C(=O)O)cc1`
ZINC6624011 ZINC	0.565	258.3 Da LogP 2.15 TPSA 77.8	✓ Ro5	✓ Clean	`O=C(O)c1ccc([C@@H](O)[C@H](O)c2ccccc2)cc1`
ZINC6624012 ZINC	0.565	258.3 Da LogP 2.15 TPSA 77.8	✓ Ro5	✓ Clean	`O=C(O)c1ccc([C@H](O)[C@@H](O)c2ccccc2)cc1`
ZINC6624013 ZINC	0.565	258.3 Da LogP 2.15 TPSA 77.8	✓ Ro5	✓ Clean	`O=C(O)c1ccc([C@H](O)[C@H](O)c2ccccc2)cc1`

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.