Protein target profile

VK055_4026

ADP-ribose pyrophosphatase

Genome: KpATCC43816 Gene: AIK82573.1 nudF 3D evidence: Experimental + ColabFold model Metabolism 3 reactions UniProt A0A0H3GVQ7
Length 210
Pocket druggability 0.75
Metabolic reactions 3
Chokepoint No
Direct ligand evidence 0 57 total records
Functional annotation 1 EC 9 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
3.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Localization

Localization
Cytoplasmic

Structure confidence

ColabFold pLDDT
96.03 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

PDB experimental structure

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 0.75
Structure 9B21
Pocket Pocket 1
P2Rank 0.434
Structure 9B21
Pocket Pocket 1
ColabFold model
FPocket 0.601 · Pocket 6
P2Rank 0.198 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 153 / 4744 genomes with a hit
Prevalence 3.2%

Cross-references

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

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
Catalyzed reactions

3 reactions 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.

MSKPTQQGITFSKNDVEIIARETLYRGFFSLDLYRFRHRLFNGGMSGEITREIFERGHAAVLLPFDPVRDEVVLVEQIRIAAYDTSESPWLLEMVAGMIEAGETVEDVARREALEEAGLEVGRTKPILSYLASPGGTSERLSILVGEVDASTAKGIHGLAEENEDIRVHVVSREQAYQWVEEGKIDNAASVIALQWLQLHYHNLRNEWTK

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 9 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

9
  • GO:0016818 Catalysis of the hydrolysis of any acid anhydride which contains phosphorus.
  • GO:0046872 Binding to a metal ion.
  • GO:0016787 Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0047631 Catalysis of the reaction: ADP-ribose + H2O = AMP + D-ribose 5-phosphate.
  • GO:0019144 Catalysis of the reaction: ADP-sugar + H2O = AMP + alpha-D-aldose 1-phosphate.
  • GO:0000166 Binding to a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
  • GO:0006753 The chemical reactions and pathways involving any phosphorylated nucleoside.
  • GO:0019693 The chemical reactions and pathways involving ribose phosphate, any phosphorylated ribose sugar.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

14 records
Show feature table
Start End DB Term Name
2 209 Gene3D G3DSA:3.90.79.10 Nucleoside Triphosphate Pyrophosphohydrolase
14 199 NCBIfam TIGR00052 nudix-type nucleoside diphosphatase, YffH/AdpP family
14 199 InterPro IPR004385 Nucleoside diphosphate pyrophosphatase
1 209 FunFam G3DSA:3.90.79.10:FF:000011 ADP-ribose pyrophosphatase
97 118 ProSitePatterns PS00893 Nudix box signature.
97 118 InterPro IPR020084 NUDIX hydrolase, conserved site
6 208 SUPERFAMILY SSF55811 Nudix
6 208 InterPro IPR015797 NUDIX hydrolase-like domain superfamily
46 200 PANTHER PTHR11839 UDP/ADP-SUGAR PYROPHOSPHATASE
56 200 CDD cd03424 ADPRase_NUDT5
55 193 ProSiteProfiles PS51462 Nudix hydrolase domain profile.
55 193 InterPro IPR000086 NUDIX hydrolase domain
59 179 Pfam PF00293 NUDIX domain
59 179 InterPro IPR000086 NUDIX hydrolase domain

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

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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 #10
0.288
Show in viewer
Surrounding area

Binding pockets · P2Rank

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

Site 1 P2Rank #1
0.908
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Surrounding area
Site 2 P2Rank #2
0.808
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Surrounding area
Site 3 P2Rank #3
0.064
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Surrounding area
Site 4 P2Rank #4
0.042
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Surrounding area
Site 5 P2Rank #5
0.031
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Surrounding area
All structural evidence 4 experimental · 1 predicted

Structural evidence

4 + 1

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
PDB 9B1Z
X-ray 1.25 Å A,B
100.0% 1-210
Viewing
PDB 9B22
X-ray 1.30 Å A,B
100.0% 1-210
Loaded
PDB 9B20
X-ray 1.55 Å A,B
100.0% 1-210
Loaded
PDB 9B21
X-ray 1.60 Å A,B
100.0% 1-210
Loaded
ColabFold VK055_4026
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.

57 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 7 records from similar proteins
Structural ligands 7 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
ADV PDB via homolog 557.3 Da · LogP -3.17 · TPSA 282.3 Open detail RCSB PDB
APR PDB via homolog Detail RCSB PDB
AR6 PDB via homolog Detail RCSB PDB
GD3 PDB via homolog Detail RCSB PDB
GDD 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
ADV RCSB PDB Q93K97 557.3 Da LogP -3.17 TPSA 282.3 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
APR RCSB PDB Q84CU3 559.3 Da LogP -3.28 TPSA 291.5 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
AR6 RCSB PDB Q5SKW5 559.3 Da LogP -3.28 TPSA 291.5 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
GD3 RCSB PDB Q93K97 157.2 Da LogP 0.00 TPSA 0.0 ✓ Ro5 ✓ Clean [Gd+3]
GDD RCSB PDB P37128 605.3 Da LogP -4.63 TPSA 331.7 3 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=O…
R5P RCSB PDB Q84CU3 230.1 Da LogP -2.62 TPSA 144.5 ✓ Ro5 ✓ Clean C(C(C(C(C=O)O)O)O)OP(=O)(O)O
TAR RCSB PDB P37128 150.1 Da LogP -2.12 TPSA 115.1 ✓ Ro5 ✓ Clean [C@H]([C@@H](C(=O)O)O)(C(=O)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.