KpKP13 Protein target profile

putative peroxiredoxin

Accession: KP13_02059

Gene: AHE46062.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GNF5
Length 200
Pocket druggability (P2Rank · AlphaFold DB model) 0.059
Direct ligand evidence 0 55 total records
Functional annotation 0 EC 9 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 (%)
50.0 Lower values reduce human off-target concern.
Human E-value
1.5399999999999999e-55
Gut microbiome similarity
4.7% 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
97.35 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) 0.059
Structure A0A0H3GNF5
Pocket Pocket 1
Druggability (FPocket) 0.711
Structure A0A0H3GNF5
Pocket Pocket 3
ColabFold model
P2Rank 0.044 · Pocket 1
FPocket 0.421 · Pocket 2
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 221 / 4744 genomes with a hit
Prevalence 4.7%

Sequence

Primary amino-acid sequence viewer.

MVLVTRQAPDFTAAAVLGNGEIVEKFNFKQHTNGKPTVLFFWPMDFTFVCPSELIAFDKRYEEFQKRGVEVVGVSFDSEFVHNAWRNTPVDQGGIGPVKYAMVADIKREIQKAYGIEHPDEGVALRGSFLIDANGVVRHQVVNDLPLGRNIDEMLRMVDALQFHEEHGEVCPAQWEKGKEGMAASPEGVAKYLTENVSSL

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

9 GO

Subcellular localization

Localization
Cytoplasmic

Gene Ontology (GO)

9
  • 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:0051920 Catalysis of the reaction: [protein]-dithol + ROOH = [protein]-disulfide + H2O + ROH.
  • GO:0016209 Inhibition of the reactions brought about by dioxygen (O2) or peroxides. Usually the antioxidant is effective because it can itself be more easily oxidized than the substance protected. The term is often applied to components that can trap free radicals, thereby breaking the chain reaction that normally leads to extensive biological damage.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0008379 Catalysis of the reaction: [thioredoxin]-dithiol + H2O2 = [thioredoxin]-disulfide + H2O.
  • GO:0045454 Any process that maintains the redox environment of a cell or compartment within a cell.
  • GO:0033554 Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating the organism is under stress. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
  • GO:0042744 The chemical reactions and pathways resulting in the breakdown of hydrogen peroxide (H2O2).
  • GO:0006979 Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

14 records
Show feature table
Start End DB Term Name
160 194 Pfam PF10417 C-terminal domain of 1-Cys peroxiredoxin
160 194 InterPro IPR019479 Peroxiredoxin, C-terminal
1 198 PIRSF PIRSF000239 AHPC
1 198 InterPro IPR024706 Peroxiredoxin, AhpC-type
2 163 ProSiteProfiles PS51352 Thioredoxin domain profile.
2 163 InterPro IPR013766 Thioredoxin domain
4 178 CDD cd03015 PRX_Typ2cys
1 193 SUPERFAMILY SSF52833 Thioredoxin-like
1 193 InterPro IPR036249 Thioredoxin-like superfamily
3 195 PANTHER PTHR10681 THIOREDOXIN PEROXIDASE
1 197 Gene3D G3DSA:3.40.30.10 Glutaredoxin
4 139 Pfam PF00578 AhpC/TSA family
4 139 InterPro IPR000866 Alkyl hydroperoxide reductase subunit C/ Thiol specific antioxidant
1 197 FunFam G3DSA:3.40.30.10:FF:000002 Alkyl hydroperoxide reductase C

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
0.059
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Surrounding area
Pocket 2 P2Rank #2
0.053
Likely same site as FPocket 3 1.5 Å 12 shared residues 100% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.028
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Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #3
0.711
Likely same site as P2Rank 2 1.5 Å 12 shared residues 100% of smaller site
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Surrounding area
Pocket 2 FPocket #7
0.622
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Surrounding area
Residue sets
UniProt: Active site:50-50 Cysteine sulfenic acid (-SOH) intermediate; for peroxidase activity
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_A0A0H3GNF5
AlphaFold DB full sequence Viewing
ColabFold KP13_02059
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.

55 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 50 similarity-based ZINC candidates
Best available ligand signal
COM PDB via homolog 142.2 Da · LogP -0.20 · TPSA 54.4 Open detail RCSB PDB
CPS PDB via homolog Detail RCSB PDB
PE8 PDB via homolog Detail RCSB PDB
PER PDB via homolog Detail RCSB PDB
QDO 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
COM RCSB PDB Q13162 142.2 Da LogP -0.20 TPSA 54.4 ✓ Ro5 ✓ Clean C(CS(=O)(=O)O)S
CPS RCSB PDB Q06830 614.9 Da LogP 2.88 TPSA 147.0 1 viol. ✓ Clean C[C@H](CCC(=O)NCCC[N+](C)(C)CCCS(=O)(=O)[O-])[C…
PE8 RCSB PDB Q4QF76 370.4 Da LogP -0.91 TPSA 105.1 ✓ Ro5 ✓ Clean C(COCCOCCOCCOCCOCCOCCOCCO)O
PER RCSB PDB Q13162 32.0 Da LogP -2.38 TPSA 46.1 ✓ Ro5 ✓ Clean [O-][O-]
QDO RCSB PDB J7HJM3 348.0 Da LogP 1.90 TPSA 53.9 ✓ Ro5 Alert c1ccc2c(c1)[n+](c(c([n+]2[O-])CBr)CBr)[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.