KpATCC43816 Protein target profile

phosphoribulokinase / Uridine kinase family protein

Accession: VK055_3733

Gene: AIK82288.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GU50

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Length 289

Pocket druggability (P2Rank · AlphaFold DB model) 0.909

Direct ligand evidence 0 53 total records

Functional annotation 1 EC 4 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 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 0.91. Structure available AlphaFold DB model + ColabFold model 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: 2.8% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG): N
DEG identity (%): 25.962 Higher values support similarity to known essential genes.

Structure confidence

ColabFold pLDDT: 93.2 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) 0.909

Structure A0A0H3GU50

Pocket Pocket 1

Druggability (FPocket) 0.061

Structure A0A0H3GU50

Pocket Pocket 18

ColabFold model

P2Rank 0.904 · Pocket 1

FPocket 0.044 · Pocket 13

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 132 / 4744 genomes with a hit

Prevalence 2.8%

Metabolic context

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

This protein is not associated with the imported metabolic network for this genome.

Browse the genome's metabolic network

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MSAKHPVIAVTGSSGAGTTTTSLAFRKIFAQLNLHAAEVEGDSFHRYTRPEMDMAIRKARDQGKHISYFGPEANDFGLLEQTFVDYGRHGKGQSRKYLHTYDEAVPWNQVPGTFTPWQPLPEPTDVLFYEGLHGGVVTPQHDVASHVDLLVGVVPIVNLEWIQKLIRDTSERGHSREAVMDSVVRSMEDYINFITPQFSRTHINFQRVPTVDTSNPFAAKAIPSLDESFVVIHFRNLQNIDFPWLLAMLQGSFISHMNTLVVPGGKMGLAMELIMTPLVERLMEGRKIG

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 4 GO

Subcellular localization

Localization: Cytoplasmic

Enzyme Commission (EC)

2.7.1.19

Gene Ontology (GO)

GO:0008974 Catalysis of the reaction: D-ribulose 5-phosphate + ATP = D-ribulose 1,5-bisphosphate + ADP + 2 H+.
GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
GO:0016301 Catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
GO:0005975 The chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

17 records

Show feature table

Start	End	DB	Term	Name
1	289	Gene3D	G3DSA:3.40.50.300	-
1	289	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
126	144	PRINTS	PR00478	Phosphoribulokinase family signature
126	144	InterPro	IPR006082	Phosphoribulokinase
164	181	PRINTS	PR00478	Phosphoribulokinase family signature
164	181	InterPro	IPR006082	Phosphoribulokinase
182	205	PRINTS	PR00478	Phosphoribulokinase family signature
182	205	InterPro	IPR006082	Phosphoribulokinase
12	29	PRINTS	PR00478	Phosphoribulokinase family signature
12	29	InterPro	IPR006082	Phosphoribulokinase
1	289	FunFam	G3DSA:3.40.50.300:FF:000307	Phosphoribulokinase
4	286	SUPERFAMILY	SSF52540	P-loop containing nucleoside triphosphate hydrolases
4	286	InterPro	IPR027417	P-loop containing nucleoside triphosphate hydrolase
164	177	ProSitePatterns	PS00567	Phosphoribulokinase signature.
164	177	InterPro	IPR006082	Phosphoribulokinase
7	214	Pfam	PF00485	Phosphoribulokinase / Uridine kinase family
7	214	InterPro	IPR006083	Phosphoribulokinase/uridine kinase

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

0.909

Show in viewer

Surrounding area

Pocket 2 P2Rank #2

0.036

Show in viewer

Surrounding area

Pocket 3 P2Rank #3

0.001

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_A0A0H3GU50	AlphaFold DB	—	—	full sequence	—	Viewing
ColabFold VK055_3733	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.

53 records

Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records

Transferred evidence 3 records from similar proteins

Structural ligands 3 0 loaded crystals

Measured bioactivity 0 direct and transferred ChEMBL records

Proposed compounds 50 similarity-based ZINC candidates

Best available ligand signal

DTT PDB via homolog 154.3 Da · LogP -0.43 · TPSA 40.5 Open detail RCSB PDB

G6P PDB via homolog Detail RCSB PDB

OS PDB via homolog Detail RCSB PDB

ZINC100351935 ZINC proposed compound · Tanimoto 1.000 Detail ZINC

ZINC1529564 ZINC proposed compound · Tanimoto 1.000 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
DTT RCSB PDB	6KEV	Q31PL2	154.3 Da LogP -0.43 TPSA 40.5	✓ Ro5	✓ Clean	`C([C@@H]([C@H](CS)O)O)S`
G6P RCSB PDB	6KEV	Q31PL2	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`C([C@@H]1[C@H]([C@@H]([C@H]([C@H](O1)O)O)O)O)OP…`
OS RCSB PDB	6HZL	A0A0H3K6J7	190.2 Da LogP -0.00 TPSA 0.0	✓ Ro5	✓ Clean	`[Os+3]`

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
ZINC100351935 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O)[C@H](O)[C@H](O)[C@@…`
ZINC1529564 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](O)[C@H](O)[C@H](O)[C@…`
ZINC1532533 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O)[C@@H](O)[C@H](O)[C@…`
ZINC1532857 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](O)[C@@H](O)[C@H](O)[C…`
ZINC3581460 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](O)[C@@H](O)[C@H](O)[C…`
ZINC38276879 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@@H](O)[C@H](O)[C@…`
ZINC38276880 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@@H](O)[C@H](O)[C@H…`
ZINC3869397 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@@H](O)[C@@H](O)[C…`
ZINC3875374 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@…`
ZINC3875375 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@@…`
ZINC4095545 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@…`
ZINC4095546 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@H…`
ZINC4096188 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@@H](O)[C@@H](O)[C@…`
ZINC8551507 ZINC	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O)[C@@H](O)[C@H](O)[C@…`
ZINC12504154 ZINC	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@@H](O)[C@@H]1O`
ZINC1532546 ZINC	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O)[C@@H](O)[C@H]1O`
ZINC4096190 ZINC	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@H](O)[C@@H]1O`
ZINC4228241 ZINC	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@H](O)[C@@H]1O`
ZINC4521831 ZINC	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@@H](O)[C@@H]1O`
ZINC13516910 ZINC	0.733	244.1 Da LogP -2.42 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](CO)[C@@H](O)[C@H]1O`
ZINC2562340 ZINC	0.733	244.1 Da LogP -2.42 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](CO)[C@H](O)[C@H]1O`
ZINC4097102 ZINC	0.719	259.2 Da LogP -3.14 TPSA 162.7	1 viol.	✓ Clean	`N[C@H]1[C@H](O)O[C@H](COP(=O)(O)O)[C@@H](O)[C@@…`
ZINC4097103 ZINC	0.719	259.2 Da LogP -3.14 TPSA 162.7	1 viol.	✓ Clean	`N[C@H]1[C@@H](O)O[C@H](COP(=O)(O)O)[C@@H](O)[C@…`
ZINC12502703 ZINC	0.667	340.1 Da LogP -2.99 TPSA 203.4	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](OP(=O)(O)O)[C@H](O)[C@…`
ZINC4095589 ZINC	0.667	340.1 Da LogP -2.99 TPSA 203.4	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](OP(=O)(O)O)[C@H](O)[C@@…`
ZINC15298193 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O[C@@H]2O[C@H](CO)[C@@H…`
ZINC1933262384 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O[C@@H]2O[C@H](CO)[C@@H…`
ZINC1933262385 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O[C@@H]2O[C@H](CO)[C@@H…`
ZINC1933262386 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O[C@@H]2O[C@H](CO)[C@H]…`
ZINC1933262387 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O[C@@H]2O[C@H](CO)[C@H]…`
ZINC256073272 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O[C@@H]2O[C@H](CO)[C@H…`
ZINC256073273 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O[C@@H]2O[C@H](CO)[C@@…`
ZINC256073274 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O[C@@H]2O[C@H](CO)[C@H…`
ZINC256073275 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O[C@@H]2O[C@H](CO)[C@@…`
ZINC4228300 ZINC	0.657	422.3 Da LogP -5.28 TPSA 236.1	2 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O[C@H]2O[C@H](CO)[C@@H]…`
ZINC56870785 ZINC	0.656	228.1 Da LogP -1.40 TPSA 116.5	✓ Ro5	✓ Clean	`C[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](O)[C@H]1O`
ZINC13522068 ZINC	0.636	310.1 Da LogP -2.35 TPSA 183.2	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](OP(=O)(O)O)[C@H](O)[C@@…`
ZINC3870205 ZINC	0.636	310.1 Da LogP -2.35 TPSA 183.2	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](OP(=O)(O)O)[C@@H](O)[C…`
ZINC4095560 ZINC	0.636	310.1 Da LogP -2.35 TPSA 183.2	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](OP(=O)(O)O)[C@H](O)[C@…`
ZINC13513381 ZINC	0.622	301.2 Da LogP -2.12 TPSA 169.3	1 viol.	✓ Clean	`C/C(O)=N/[C@H]1[C@H](O)O[C@H](COP(=O)(O)O)[C@H]…`
ZINC30725927 ZINC	0.622	301.2 Da LogP -2.12 TPSA 169.3	1 viol.	✓ Clean	`C/C(O)=N/[C@H]1[C@@H](O)O[C@H](COP(=O)(O)O)[C@H…`
ZINC100350901 ZINC	0.605	301.2 Da LogP -2.96 TPSA 165.8	1 viol.	✓ Clean	`CC(=O)N[C@@H]1[C@H](O)O[C@H](COP(=O)(O)O)[C@H](…`
ZINC1530414 ZINC	0.605	301.2 Da LogP -2.96 TPSA 165.8	1 viol.	✓ Clean	`CC(=O)N[C@@H]1[C@@H](O)O[C@@H](COP(=O)(O)O)[C@H…`
ZINC1532625 ZINC	0.605	301.2 Da LogP -2.96 TPSA 165.8	1 viol.	✓ Clean	`CC(=O)N[C@H]1[C@H](O)[C@@H](O)[C@H](COP(=O)(O)O…`
ZINC245204467 ZINC	0.605	301.2 Da LogP -2.96 TPSA 165.8	1 viol.	✓ Clean	`CC(=O)N[C@H]1[C@H](O)[C@@H](O)[C@@H](COP(=O)(O)…`
ZINC245204468 ZINC	0.605	301.2 Da LogP -2.96 TPSA 165.8	1 viol.	✓ Clean	`CC(=O)N[C@H]1[C@H](O)[C@H](O)[C@@H](COP(=O)(O)O…`
ZINC30725207 ZINC	0.605	301.2 Da LogP -2.96 TPSA 165.8	1 viol.	✓ Clean	`CC(=O)N[C@@H]1[C@H](O)O[C@H](COP(=O)(O)O)[C@@H]…`
ZINC4096363 ZINC	0.605	301.2 Da LogP -2.96 TPSA 165.8	1 viol.	✓ Clean	`CC(=O)N[C@@H]1[C@@H](O)O[C@H](COP(=O)(O)O)[C@@H…`
ZINC4097100 ZINC	0.605	301.2 Da LogP -2.96 TPSA 165.8	1 viol.	✓ Clean	`CC(=O)N[C@H]1[C@@H](O)O[C@H](COP(=O)(O)O)[C@@H]…`
ZINC4097101 ZINC	0.605	301.2 Da LogP -2.96 TPSA 165.8	1 viol.	✓ Clean	`CC(=O)N[C@H]1[C@H](O)O[C@H](COP(=O)(O)O)[C@@H](…`

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 A0A0H3GU50