KpKP13 Protein target profile

Quinone oxidoreductase

Accession: KP13_00388

Gene: qor AHE46874.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GHI8
Length 327
Pocket druggability (P2Rank · AlphaFold DB model) 0.97
Direct ligand evidence 0 58 total records
Functional annotation 1 EC 6 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
Hit
Human identity (%)
45.946 Lower values reduce human off-target concern.
Human E-value
7.21e-08
Gut microbiome similarity
2.7% 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.

Structure confidence

ColabFold pLDDT
97.62 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) 0.97
Structure A0A0H3GHI8
Pocket Pocket 1
Druggability (FPocket) 0.985
Structure A0A0H3GHI8
Pocket Pocket 10
ColabFold model
P2Rank 0.965 · Pocket 1
FPocket 0.883 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 128 / 4744 genomes with a hit
Prevalence 2.7%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MATRIEFSKHGGPEVLQAVEFTPRDPAEHEIQVENKAIGINYIDTYVRSGLYPPPSLPSGLGTEAAGIVSKVGHGVTHIKVGDRVVYAQSALGAYSTVHNVLADKAAVLPDAISFEQAAASFLKGLTVWYLLRKTYEIKPDEMFLFHAAAGGVGLIACQWAKALGAKLIGTVGSAQKAQRAKEAGAWQVINYREESIVERLKALTDGKKVAVVYDSVGKDTWEASLDCLQRRGLMVSFGNSSGPVTGVNLGILNQKGSLYVTRPSLQGYITNREELEEACSELFSLIASGVIKVDVAESQIYPLSEARRAHEVLESRVTQGSSLLLP

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 6 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

6
  • GO:0016491 Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
  • GO:0008270 Binding to a zinc ion (Zn).
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0035925 Binding to a region containing frequent adenine and uridine bases within the 3' untranslated region of a mRNA molecule or in pre-mRNA intron. The ARE-binding element consensus is UUAUUUAUU. ARE-binding proteins control the stability and/or translation of mRNAs.
  • GO:0070402 Binding to the reduced form, NADPH, of nicotinamide-adenine dinucleotide phosphate, a coenzyme involved in many redox and biosynthetic reactions.
  • GO:0003960 Catalysis of the reaction: 2 a quinone + NADPH + H+ = 2 a 1,4-benzosemiquinone + NADP+.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

18 records
Show feature table
Start End DB Term Name
4 327 CDD cd05286 QOR2
4 327 InterPro IPR047618 Quinone oxidoreductase-like
29 88 Pfam PF08240 Alcohol dehydrogenase GroES-like domain
29 88 InterPro IPR013154 Alcohol dehydrogenase-like, N-terminal
124 269 FunFam G3DSA:3.40.50.720:FF:000053 Quinone oxidoreductase 1
124 269 Gene3D G3DSA:3.40.50.720 -
10 142 SUPERFAMILY SSF50129 GroES-like
10 142 InterPro IPR011032 GroES-like superfamily
10 321 Gene3D G3DSA:3.90.180.10 -
152 284 Pfam PF00107 Zinc-binding dehydrogenase
152 284 InterPro IPR013149 Alcohol dehydrogenase-like, C-terminal
141 162 ProSitePatterns PS01162 Quinone oxidoreductase / zeta-crystallin signature.
141 162 InterPro IPR002364 Quinone oxidoreductase/zeta-crystallin, conserved site
5 327 PANTHER PTHR48106 QUINONE OXIDOREDUCTASE PIG3-RELATED
113 275 SUPERFAMILY SSF51735 NAD(P)-binding Rossmann-fold domains
113 275 InterPro IPR036291 NAD(P)-binding domain superfamily
11 325 SMART SM00829 PKS_ER_names_mod
11 325 InterPro IPR020843 Polyketide synthase, enoylreductase 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.

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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
0.97
Likely same site as FPocket 10 0.8 Å 39 shared residues 95% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.276
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.015
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #10
0.985 Unusual size
Likely same site as P2Rank 1 0.8 Å 39 shared residues 95% of smaller site
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_A0A0H3GHI8
AlphaFold DB full sequence Viewing
ColabFold KP13_00388
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.

58 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 8 records from similar proteins
Structural ligands 8 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
8ID PDB via homolog 790.3 Da · LogP -2.41 · TPSA 318.3 Open detail RCSB PDB
BMD PDB via homolog Detail RCSB PDB
CO8 PDB via homolog Detail RCSB PDB
DIF PDB via homolog Detail RCSB PDB
ETF 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
8ID RCSB PDB P00330 790.3 Da LogP -2.41 TPSA 318.3 3 viol. ✓ Clean c1cc(c[n+](c1)[C@H]2[C@@H]([C@@H]([C@H](O2)CO[P…
BMD RCSB PDB P42328 87.1 Da LogP 0.27 TPSA 43.1 ✓ Ro5 ✓ Clean CCCC(=O)N
CO8 RCSB PDB F0V3Z3 893.7 Da LogP 1.03 TPSA 363.6 3 viol. ✓ Clean CCCCCCCC(=O)SCCNC(=O)CCNC(=O)[C@@H](C(C)(C)CO[P…
DIF RCSB PDB Q8N4Q0 296.2 Da LogP 4.36 TPSA 49.3 ✓ Ro5 ✓ Clean c1ccc(c(c1)CC(=O)O)Nc2c(cccc2Cl)Cl
ETF RCSB PDB P00330 100.0 Da LogP 0.54 TPSA 20.2 ✓ Ro5 ✓ Clean C(C(F)(F)F)O
FU2 RCSB PDB Q46UZ9 96.1 Da LogP 1.09 TPSA 30.2 ✓ Ro5 ✓ Clean c1cc(oc1)C=O
ISP RCSB PDB Q46UZ9 140.1 Da LogP 0.50 TPSA 66.8 ✓ Ro5 ✓ Clean CC(C)OP(=O)(O)O
X1H RCSB PDB Q8N4Q0 376.4 Da LogP 5.22 TPSA 66.8 1 viol. ✓ Clean COc1ccc(cc1)C(=O)c2c3ccc(cc3sc2c4ccc(cc4)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.