KpKP13 Protein target profile

Alkyl hydroperoxide reductase subunit F

Accession: KP13_03356

Gene: AHE45735.1 ahpF 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GPU9
Length 521
Pocket druggability (P2Rank · AlphaFold DB model) 0.967
Direct ligand evidence 0 70 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
No hit
Gut microbiome similarity
5.6% 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
95.96 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) 0.967
Structure A0A0H3GPU9
Pocket Pocket 1
Druggability (FPocket) 0.113
Structure A0A0H3GPU9
Pocket Pocket 28
ColabFold model
P2Rank 0.965 · Pocket 1
FPocket 0.436 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 264 / 4744 genomes with a hit
Prevalence 5.6%

Sequence

Primary amino-acid sequence viewer.

MLDTNMKTQLKAYLEKLTKPVELIATLDDSAKSAEIKELLAEIAELSDKVTFKEDNTLAVRKPSFLITNPGSDQGPRFAGSPLGHEFTSLVLALLWTGGHPSKEAQSLLEQIRDIDGDFEFETYYSLSCHNCPDVVQALNLMAVLNPRIKHTAIDGGTFQNEITERNVMGVPAVFMNGQEFGQGRMTLTEIVAKVDTGAEKRAAEELNQRDAYDVLIVGSGPSGAAAAVYSARKGIRTGLMGERFGGQVLDTVDIENYISVPKTEGQKLAGALKAHVNDYNVDVIDSQSATKLTPAATEGGLHQIETASGAVLKARSVIIATGAKWRNMNVPGEDQYRTKGVTYCPHCDGPLFKGKRVAVIGGGNSGVEAAIDLAGVVEHVTLLEFAPEMKADQVLQDKVRSLKNVDIILNAQTTEVKGDGSKVTGLQYRDRVSGDEHHIALAGIFVQIGLLPNTTWLEGAVERNRMGEIIIDAKCETNVKGVFAAGDCTTVPYKQIIIAAGEGAKASLSAFDYLIRTKTA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

9 GO

Subcellular localization

Localization
CytoplasmicMembrane

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:0008785 Catalysis of the reaction: octane hydroperoxide + NADH + H+ = H2O + NAD+ + 1-octanol.
  • GO:0050660 Binding to FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2.
  • GO:0051287 Binding to nicotinamide adenine dinucleotide, a coenzyme involved in many redox and biosynthetic reactions; binding may be to either the oxidized form, NAD+, or the reduced form, NADH.
  • GO:0000302 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 a reactive oxygen species stimulus. Reactive oxygen species include singlet oxygen, superoxide, and oxygen free radicals.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0032991 A stable assembly of two or more macromolecules, i.e. proteins, nucleic acids, carbohydrates or lipids, in which at least one component is a protein and the constituent parts function together.
  • GO:0102039 Catalysis of the reaction: a hydroperoxide + H+ + NADH = an alcohol + H2O + NAD+.
  • GO:0016668 Catalysis of an oxidation-reduction (redox) reaction in which a sulfur-containing group acts as a hydrogen or electron donor and reduces NAD or NADP.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

44 records
Show feature table
Start End DB Term Name
36 56 Coils Coil Coil
442 458 PRINTS PR00368 FAD-dependent pyridine nucleotide reductase signature
215 234 PRINTS PR00368 FAD-dependent pyridine nucleotide reductase signature
315 333 PRINTS PR00368 FAD-dependent pyridine nucleotide reductase signature
468 490 PRINTS PR00368 FAD-dependent pyridine nucleotide reductase signature
357 375 PRINTS PR00368 FAD-dependent pyridine nucleotide reductase signature
213 497 Pfam PF07992 Pyridine nucleotide-disulphide oxidoreductase
213 497 InterPro IPR023753 FAD/NAD(P)-binding domain
214 236 PRINTS PR00469 Pyridine nucleotide disulphide reductase class-II signature
478 496 PRINTS PR00469 Pyridine nucleotide disulphide reductase class-II signature
246 261 PRINTS PR00469 Pyridine nucleotide disulphide reductase class-II signature
266 276 PRINTS PR00469 Pyridine nucleotide disulphide reductase class-II signature
316 324 PRINTS PR00469 Pyridine nucleotide disulphide reductase class-II signature
405 421 PRINTS PR00469 Pyridine nucleotide disulphide reductase class-II signature
444 465 PRINTS PR00469 Pyridine nucleotide disulphide reductase class-II signature
338 350 PRINTS PR00469 Pyridine nucleotide disulphide reductase class-II signature
353 377 PRINTS PR00469 Pyridine nucleotide disulphide reductase class-II signature
1 101 SUPERFAMILY SSF52833 Thioredoxin-like
1 101 InterPro IPR036249 Thioredoxin-like superfamily
106 197 SUPERFAMILY SSF52833 Thioredoxin-like
106 197 InterPro IPR036249 Thioredoxin-like superfamily
327 450 FunFam G3DSA:3.50.50.60:FF:000007 Alkyl hydroperoxide reductase, F subunit
1 200 FunFam G3DSA:3.40.30.80:FF:000001 Alkyl hydroperoxide reductase subunit F
1 517 NCBIfam TIGR03140 alkyl hydroperoxide reductase subunit F
1 517 InterPro IPR012081 Alkyl hydroperoxide reductase subunit F
1 95 CDD cd02974 AhpF_NTD_N
1 95 InterPro IPR044142 AhpF, N-terminal domain, N-terminal TRX-fold subdomain
215 511 Gene3D G3DSA:3.50.50.60 -
215 511 InterPro IPR036188 FAD/NAD(P)-binding domain superfamily
1 200 Gene3D G3DSA:3.40.30.80 -
345 365 ProSitePatterns PS00573 Pyridine nucleotide-disulphide oxidoreductases class-II active site.
345 365 InterPro IPR008255 Pyridine nucleotide-disulphide oxidoreductase, class-II, active site
327 450 Gene3D G3DSA:3.50.50.60 -
327 450 InterPro IPR036188 FAD/NAD(P)-binding domain superfamily
206 514 SUPERFAMILY SSF51905 FAD/NAD(P)-binding domain
206 514 InterPro IPR036188 FAD/NAD(P)-binding domain superfamily
109 211 ProSiteProfiles PS51354 Glutaredoxin domain profile.
106 194 CDD cd03026 AhpF_NTD_C
106 194 InterPro IPR044141 AhpF, N-terminal domain, C-terminal TRX-fold subdomain
1 521 PIRSF PIRSF000238 AhpF
1 521 InterPro IPR012081 Alkyl hydroperoxide reductase subunit F
126 194 Pfam PF13192 Thioredoxin domain
126 194 InterPro IPR012336 Thioredoxin-like fold
211 518 PANTHER PTHR48105 THIOREDOXIN REDUCTASE 1-RELATED-RELATED

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
0.967
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.29
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.119
Show in viewer
Surrounding area
Residue sets
UniProt: Binding site:214-229
UniProt: Binding site:357-371
UniProt: Binding site:478-488
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_A0A0H3GPU9
AlphaFold DB full sequence Viewing
ColabFold KP13_03356
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.

70 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 20 records from similar proteins
Structural ligands 4 0 loaded crystals
Measured bioactivity 16 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
3AA PDB via homolog 716.4 Da · LogP -2.42 · TPSA 347.7 Open detail RCSB PDB
FDA PDB via homolog Detail RCSB PDB
MLI PDB via homolog Detail RCSB PDB
MLT PDB via homolog Detail RCSB PDB
CHEMBL2035464 ChEMBL via homolog · pchembl 8.00 (~10.0 nM) Detail ChEMBL

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
3AA RCSB PDB P0A9P4 716.4 Da LogP -2.42 TPSA 347.7 3 viol. ✓ Clean c1cc(c[n+](c1)[C@H]2[C@@H]([C@@H]([C@H](O2)CO[P…
FDA RCSB PDB Q8YID2 787.6 Da LogP -1.75 TPSA 363.3 3 viol. ✓ Clean Cc1cc2c(cc1C)N(C3=C(N2)C(=O)NC(=O)N3)C[C@@H]([C…
MLI RCSB PDB A0A229Y1X4 102.0 Da LogP -3.12 TPSA 80.3 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(=O)[O-]
MLT RCSB PDB A0A229Y1X4 134.1 Da LogP -1.09 TPSA 94.8 ✓ Ro5 ✓ Clean C([C@H](C(=O)O)O)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.