KpATCC43816 Protein target profile

4-carboxy-4-hydroxy-2-oxoadipate aldolase/oxaloacetate decarboxylase

Accession: VK055_3417

Gene: ligK AIK81974.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 3 reactions UniProt A0A0H3H0B8

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Length 237

Pocket druggability (P2Rank · AlphaFold DB model) 0.16

Metabolic reactions 3

Chokepoint No

Direct ligand evidence 0 35 total records

Functional annotation 1 EC 5 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

Central metabolic position More central than 93.2% of genes in this genome. 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. Structure available AlphaFold DB model + ColabFold model Review the complete evidence below

Risks to review

Microbiome similarity 27 of 4744 screened genomes (0.6%) have a significant similarity hit. Weak predicted binding pocket FPocket selected-pocket score 0.23. Weak second pocket-predictor signal P2Rank predicted binding-site probability 0.16.

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: 0.6% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG): N
DEG identity (%): 29.843 Higher values support similarity to known essential genes.

Structure confidence

ColabFold pLDDT: 97.29 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) 0.16

Structure A0A0H3H0B8

Pocket Pocket 1

Druggability (FPocket) 0.231

Structure A0A0H3H0B8

Pocket Pocket 13

ColabFold model

P2Rank 0.068 · Pocket 1

FPocket 0.316 · Pocket 9

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 27 / 4744 genomes with a hit

Prevalence 0.6%

Metabolic context

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

Explore metabolic network

Metabolic context: more central than 93.2% of genes in this genome, no human homolog detected.

Relative network centrality 93.2% more central than 93.2% of genes in this genome

Chokepoint Not a chokepoint

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MNLLNKKGLVIRHLPRHDEAVLRRCEAAGVATLHEAWDRQGLMGPAIRPIQQGVSRAGNAVTVLVTPGDNWMFHVAVEQCRAGDILVVAPTSPCGDGFFGDLLATSLQSRGVVGLVGDIGIRDSQTLREMGFAVWSRQVYAQGTVKESLGSVNVPVICAGQLVQPGDVVVADDDGVVVLPHARVRDVLHKAEARMSNELAKRVRMRNGELGLDIYAMRPRLAEKGLRYYDRADEVEE

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 5 GO

Subcellular localization

Localization: Cytoplasmic

Enzyme Commission (EC)

4.1.3.17

Gene Ontology (GO)

GO:0047443 Catalysis of the reactions: 4-hydroxy-4-methyl-2-oxoglutarate = 2 pyruvate, and 2-hydroxy-4-oxobutane-1,2,4-tricarboxylate = oxaloacetate + pyruvate.
GO:0046872 Binding to a metal ion.
GO:0042537 The chemical reactions and pathways involving benzene, C6H6, a volatile, very inflammable liquid, contained in the naphtha produced by the destructive distillation of coal, from which it is separated by fractional distillation, or any of its derivatives.
GO:0072329 The chemical reactions and pathways resulting in the breakdown of monocarboxylic acids, any organic acid containing one carboxyl (-COOH) group.
GO:0019336 The chemical reactions and pathways resulting in the breakdown of a phenol, any compound containing one or more hydroxyl groups directly attached to an aromatic carbon ring.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

11 records

Show feature table

Start	End	DB	Term	Name
44	200	PANTHER	PTHR33254	4-HYDROXY-4-METHYL-2-OXOGLUTARATE ALDOLASE 3-RELATED
31	178	Pfam	PF03737	Aldolase/RraA
31	178	InterPro	IPR005493	Ribonuclease E inhibitor RraA/RraA-like protein
31	170	CDD	cd16841	RraA_family
31	170	InterPro	IPR005493	Ribonuclease E inhibitor RraA/RraA-like protein
8	228	NCBIfam	TIGR02798	4-carboxy-4-hydroxy-2-oxoadipate aldolase/oxaloacetate decarboxylase
8	228	InterPro	IPR014165	4-carboxy-4-hydroxy-2-oxoadipate aldolase/oxaloacetate decarboxylase
29	189	SUPERFAMILY	SSF89562	RraA-like
29	189	InterPro	IPR036704	Ribonuclease E inhibitor RraA/RraA-like superfamily
3	199	Gene3D	G3DSA:3.50.30.40	-
6	199	FunFam	G3DSA:3.50.30.40:FF:000002	4-carboxy-4-hydroxy-2-oxoadipate aldolase/oxaloacetate decarboxylase

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.

Download VMD script Full viewer

Loading 3D structure...

Drag to rotate — click the view, then scroll to zoom.

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

0.16

Show in viewer

Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #13

0.231

Show in viewer

Surrounding area

Residue sets

UniProt: Binding site:100-103

UniProt: Binding site:122-122

UniProt: Binding site:123-123

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_A0A0H3H0B8	AlphaFold DB	—	—	full sequence	—	Viewing
ColabFold VK055_3417	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.

35 records

Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records

Transferred evidence 5 records from similar proteins

Structural ligands 5 0 loaded crystals

Measured bioactivity 0 direct and transferred ChEMBL records

Proposed compounds 30 similarity-based ZINC candidates

Best available ligand signal

GLV PDB via homolog 74.0 Da · LogP -0.73 · TPSA 54.4 Open detail RCSB PDB

NHE PDB via homolog Detail RCSB PDB

PYR PDB via homolog Detail RCSB PDB

SRT PDB via homolog Detail RCSB PDB

TLA PDB via homolog Detail RCSB PDB

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
GLV RCSB PDB	1NXJ	P9WGY3	74.0 Da LogP -0.73 TPSA 54.4	✓ Ro5	✓ Clean	`C(=O)C(=O)O`
NHE RCSB PDB	5IR2	B7BGD3	207.3 Da LogP 0.80 TPSA 66.4	✓ Ro5	✓ Clean	`C1CCC(CC1)NCCS(=O)(=O)O`
PYR RCSB PDB	3NOJ	A5W059	88.1 Da LogP -0.34 TPSA 54.4	✓ Ro5	✓ Clean	`CC(=O)C(=O)O`
SRT RCSB PDB	5IR2	B7BGD3	150.1 Da LogP -2.12 TPSA 115.1	✓ Ro5	✓ Clean	`[C@H]([C@H](C(=O)O)O)(C(=O)O)O`
TLA RCSB PDB	1NXJ	P9WGY3	150.1 Da LogP -2.12 TPSA 115.1	✓ Ro5	✓ Clean	`[C@@H]([C@H](C(=O)O)O)(C(=O)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
ZINC1710230 ZINC	1.000	207.3 Da LogP 0.80 TPSA 66.4	✓ Ro5	✓ Clean	`O=S(=O)(O)CCNC1CCCCC1`
ZINC2004372 ZINC	0.786	221.3 Da LogP 1.19 TPSA 66.4	✓ Ro5	✓ Clean	`O=S(=O)(O)CCCNC1CCCCC1`
ZINC38364153 ZINC	0.786	235.3 Da LogP 1.58 TPSA 66.4	✓ Ro5	✓ Clean	`O=S(=O)(O)CCCCNC1CCCCC1`
ZINC12359024 ZINC	0.692	210.1 Da LogP -3.40 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@H](O)[C@H](O)[C@@H](O)C(=O)O`
ZINC13533920 ZINC	0.692	210.1 Da LogP -3.40 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@H](O)[C@@H](O)[C@@H](O)C(=O)O`
ZINC1532740 ZINC	0.692	210.1 Da LogP -3.40 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)C(=O)O`
ZINC1549593 ZINC	0.692	210.1 Da LogP -3.40 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)[C@H](O)[C@H](O)[C@@H](O)[C@@H](O)C(=O)O`
ZINC2013424 ZINC	0.692	210.1 Da LogP -3.40 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@H](O)C(=O)O`
ZINC3581021 ZINC	0.692	210.1 Da LogP -3.40 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)[C@H](O)[C@@H](O)[C@@H](O)[C@@H](O)C(=O)O`
ZINC3860635 ZINC	0.692	210.1 Da LogP -3.40 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)C(=O)O`
ZINC5783661 ZINC	0.692	210.1 Da LogP -3.40 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(=O)O`
ZINC6072527 ZINC	0.692	210.1 Da LogP -3.40 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H](O)C(=O)O`
ZINC1560405156 ZINC	0.588	208.1 Da LogP -1.79 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)/C(O)=C(\O)[C@H](O)[C@H](O)C(=O)O`
ZINC1560405157 ZINC	0.588	208.1 Da LogP -1.79 TPSA 155.5	1 viol.	✓ Clean	`O=C(O)/C(O)=C(/O)[C@H](O)[C@H](O)C(=O)O`
ZINC19367005 ZINC	0.560	224.4 Da LogP 2.83 TPSA 24.1	✓ Ro5	✓ Clean	`C1CCC(NCCNC2CCCCC2)CC1`
ZINC26468763 ZINC	0.559	243.3 Da LogP -1.35 TPSA 100.5	✓ Ro5	✓ Clean	`O=S(=O)(O)CCN[C@@H]1CCS(=O)(=O)C1`
ZINC26468770 ZINC	0.559	243.3 Da LogP -1.35 TPSA 100.5	✓ Ro5	✓ Clean	`O=S(=O)(O)CCN[C@H]1CCS(=O)(=O)C1`
ZINC5188799 ZINC	0.556	280.5 Da LogP 4.39 TPSA 24.1	✓ Ro5	✓ Clean	`C(CCCNC1CCCCC1)CCNC1CCCCC1`
ZINC2168583 ZINC	0.529	237.3 Da LogP 0.16 TPSA 86.6	✓ Ro5	✓ Clean	`O=S(=O)(O)C[C@@H](O)CNC1CCCCC1`
ZINC2168584 ZINC	0.529	237.3 Da LogP 0.16 TPSA 86.6	✓ Ro5	✓ Clean	`O=S(=O)(O)C[C@H](O)CNC1CCCCC1`
ZINC130127586 ZINC	0.515	260.4 Da LogP 1.38 TPSA 58.2	✓ Ro5	✓ Clean	`O=S(=O)(NCCNC1CCCCCC1)C1CC1`
ZINC78421079 ZINC	0.515	210.3 Da LogP 1.43 TPSA 41.1	✓ Ro5	✓ Clean	`O=C(NCCNC1CCCCC1)C1CC1`
ZINC122239480 ZINC	0.500	238.4 Da LogP 2.22 TPSA 41.1	✓ Ro5	✓ Clean	`O=C(NCCNC1CCCCCC1)C1CCC1`
ZINC1529331 ZINC	0.500	206.1 Da LogP -2.21 TPSA 149.2	✓ Ro5	✓ Clean	`O=C(O)C(=O)[C@H](C(=O)O)[C@@H](O)C(=O)O`
ZINC1529332 ZINC	0.500	206.1 Da LogP -2.21 TPSA 149.2	✓ Ro5	✓ Clean	`O=C(O)C(=O)[C@H](C(=O)O)[C@H](O)C(=O)O`
ZINC1529333 ZINC	0.500	206.1 Da LogP -2.21 TPSA 149.2	✓ Ro5	✓ Clean	`O=C(O)C(=O)[C@@H](C(=O)O)[C@@H](O)C(=O)O`
ZINC1529334 ZINC	0.500	206.1 Da LogP -2.21 TPSA 149.2	✓ Ro5	✓ Clean	`O=C(O)C(=O)[C@@H](C(=O)O)[C@H](O)C(=O)O`
ZINC165485 ZINC	0.500	301.8 Da LogP 3.04 TPSA 46.2	✓ Ro5	✓ Clean	`O=S(=O)(CCNC1CCCCC1)c1ccc(Cl)cc1`
ZINC38889906 ZINC	0.500	226.4 Da LogP 3.21 TPSA 38.0	✓ Ro5	✓ Clean	`NCCNC1CCCCCCCCCCC1`
ZINC60934954 ZINC	0.500	315.9 Da LogP 3.43 TPSA 46.2	✓ Ro5	✓ Clean	`O=S(=O)(CCNC1CCCCCC1)c1ccc(Cl)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.

Cross-references

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

Sequence

UniProt A0A0H3H0B8

Pathways

KEGG R00350 BioCyc RXN-2464 KEGG R00217 BioCyc OXALODECARB-RXN BioCyc RXN-12074