KpATCC43816 Protein target profile

pyrimidine utilization protein B

Accession: VK055_1440

Gene: AIK80061.1 rutB 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GR97
Length 236
Pocket druggability (P2Rank · AlphaFold DB model) 0.624
Direct ligand evidence 0 13 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.

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
1.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
88.444 Higher values support similarity to known essential genes.
DEG E-value
4.12e-152 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
95.54 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) 0.624
Structure A0A0H3GR97
Pocket Pocket 1
Druggability (FPocket) 0.608
Structure A0A0H3GR97
Pocket Pocket 1
ColabFold model
P2Rank 0.653 · Pocket 1
FPocket 0.484 · Pocket 2
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 58 / 4744 genomes with a hit
Prevalence 1.2%

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.

MITLPARPESLTFAPQQSALIVVDMQNAYASQGGYLDLAGFDVSATRPVIDNINTAVAAARAAGMLIIWFQNGWDDQYVEAGGPGSPNYHKSNALKTMRQRPELQGKLLAKGGWDYQLVDELTPQEGDIVLPKPRYSGFFNTPLDSILRSRGIRHLVFTGIATNVCVESTLRDGFFLEYFGIVLEDATHQAGPAFAQQAALFNIETFFGWVSDVESFCHALSPATPLALAKEKRYA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 3 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

3
  • GO:0016811 Catalysis of the hydrolysis of any non-peptide carbon-nitrogen bond in a linear amide.
  • GO:0019740 A series of processes that forms an integrated mechanism by which a cell or an organism detects the depletion of primary nitrogen source, usually ammonia, and then activates genes to scavenge the last traces of the primary nitrogen source and to transport and metabolize alternative nitrogen sources. The utilization process begins when the cell or organism detects nitrogen levels, includes the activation of genes whose products detect, transport or metabolize nitrogen-containing substances, and ends when nitrogen is incorporated into the cell or organism's metabolism.
  • GO:0006212 The chemical reactions and pathways resulting in the breakdown of uracil, 2,4-dioxopyrimidine, one of the pyrimidine bases occurring in RNA, but not in DNA.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

12 records
Show feature table
Start End DB Term Name
3 221 SUPERFAMILY SSF52499 Isochorismatase-like hydrolases
3 221 InterPro IPR036380 Isochorismatase-like superfamily
11 224 PANTHER PTHR43540 PEROXYUREIDOACRYLATE/UREIDOACRYLATE AMIDOHYDROLASE-RELATED
7 234 Gene3D G3DSA:3.40.50.850 -
7 234 InterPro IPR036380 Isochorismatase-like superfamily
1 228 Hamap MF_00830 Ureidoacrylate amidohydrolase RutB [rutB].
1 228 InterPro IPR019916 Ureidoacrylate amidohydrolase RutB
18 215 Pfam PF00857 Isochorismatase family
18 215 InterPro IPR000868 Isochorismatase-like
3 225 NCBIfam TIGR03614 pyrimidine utilization protein B
3 225 InterPro IPR019916 Ureidoacrylate amidohydrolase RutB
19 205 CDD cd00431 cysteine_hydrolases

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
0.624
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Surrounding area
Pocket 2 P2Rank #2
0.042
Likely same site as FPocket 1 3.9 Å 7 shared residues 78% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.015
Show in viewer
Surrounding area
Pocket 4 P2Rank #4
0.002
Likely same site as FPocket 1 7.1 Å 4 shared residues 100% of smaller site
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #1
0.608
Likely same site as P2Rank 2 3.9 Å 7 shared residues 78% of smaller site
Show in viewer
Surrounding area
Pocket 2 FPocket #3
0.536
Show in viewer
Surrounding area
Residue sets
UniProt: Active site:133-133
UniProt: Active site:166-166 Nucleophile
UniProt: Active site:24-24 Proton acceptor
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_A0A0H3GR97
AlphaFold DB full sequence Viewing
ColabFold VK055_1440
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.

13 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 8 similarity-based ZINC candidates
Best available ligand signal
BTB PDB via homolog 209.2 Da · LogP -3.01 · TPSA 104.4 Open detail RCSB PDB
C5J PDB via homolog Detail RCSB PDB
ISC PDB via homolog Detail RCSB PDB
NH4 PDB via homolog Detail RCSB PDB
QLI 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
BTB RCSB PDB Q1M7F4 209.2 Da LogP -3.01 TPSA 104.4 ✓ Ro5 ✓ Clean C(CO)N(CCO)C(CO)(CO)CO
C5J RCSB PDB H8ZKV9 103.1 Da LogP -1.27 TPSA 98.2 ✓ Ro5 ✓ Clean C(=O)(N)NC(=O)N
ISC RCSB PDB P0C6D3 226.2 Da LogP -0.09 TPSA 104.1 ✓ Ro5 ✓ Clean C=C(C(=O)O)O[C@H]1C=CC=C([C@@H]1O)C(=O)O
NH4 RCSB PDB A6TWT6 18.0 Da LogP 0.38 TPSA 36.5 ✓ Ro5 ✓ Clean [NH4+]
QLI RCSB PDB Q51790 225.2 Da LogP -0.12 TPSA 109.9 ✓ Ro5 ✓ Clean C=C(C(=O)O)O[C@H]1C=CC=C([C@@H]1N)C(=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.

Cross-references

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