Protein target profile

KP13_03503

Aldo/keto reductase family protein

Genome: KpKP13 Gene: AHE45880.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GJM3
Length 317
Pocket druggability 0.9
Direct ligand evidence 0 56 total records
Functional annotation 0 EC 2 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 (%)
34.783 Lower values reduce human off-target concern.
Human E-value
2.71e-09
Gut microbiome similarity
1.2% 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
96.91 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

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 0.9
Structure A0A0H3GJM3
Pocket Pocket 1
P2Rank 0.946
Structure A0A0H3GJM3
Pocket Pocket 1
ColabFold model
FPocket 0.808 · Pocket 15
P2Rank 0.938 · Pocket 1
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 58 / 4744 genomes with a hit
Prevalence 1.2%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MMTRPLGKTGFSIAPLVFGGNVFGWTIDEKTSFALLDAFVDHGFDAIDTADVYSRWAEGNQGGESEIIIGRWLQARPGMRDKVKIFTKVGSDLGLPGHKGLSKAWIQQAVDDSLRRLNTDYIDLYFSHWPDPQTPVAETLEAFHSLQQAGKIRAMGASNLDAMQLAGALEVARKGGLPAWQVLQPEYNLYHRSAFEGALCDLCVSRDIGVVTYYSLASGFLTGKYRQPSDLTQSQRGSGIGKYLNPRGMRIIDTLAAVADEQGAKPAEVALAWLIGREGVTAPIASATSVAQVESFARAAALSLSAEQVARLDGASA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

2 GO

Gene Ontology (GO)

2
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • 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.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

14 records
Show feature table
Start End DB Term Name
20 24 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.
1 317 FunFam G3DSA:3.20.20.100:FF:000004 Oxidoreductase, aldo/keto reductase
1 315 SUPERFAMILY SSF51430 NAD(P)-linked oxidoreductase
1 315 InterPro IPR036812 NADP-dependent oxidoreductase domain superfamily
1 8 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
9 19 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
25 317 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
1 317 Gene3D G3DSA:3.20.20.100 -
1 317 InterPro IPR036812 NADP-dependent oxidoreductase domain superfamily
15 315 Pfam PF00248 Aldo/keto reductase family
15 315 InterPro IPR023210 NADP-dependent oxidoreductase domain
3 316 PANTHER PTHR43364 NADH-SPECIFIC METHYLGLYOXAL REDUCTASE-RELATED
1 24 Phobius SIGNAL_PEPTIDE Signal peptide region
5 313 CDD cd19081 AKR_AKR9C1

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 · FPocket

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

Site 1 FPocket #1
0.9
Likely same site as P2Rank 1 1.2 Å 32 shared residues 97% of smaller site
Unusual size
Show in viewer
Surrounding area
Site 2 FPocket #9
0.651
Likely same site as P2Rank 2 1.7 Å 9 shared residues 100% of smaller site
Show in viewer
Surrounding area

Binding pockets · P2Rank

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

Site 1 P2Rank #1
0.946
Likely same site as FPocket 1 1.2 Å 32 shared residues 97% of smaller site
Show in viewer
Surrounding area
Site 2 P2Rank #2
0.142
Likely same site as FPocket 9 1.7 Å 9 shared residues 100% of smaller site
Show in viewer
Surrounding area
Site 3 P2Rank #3
0.052
Show in viewer
Surrounding area
Site 4 P2Rank #4
0.041
Show in viewer
Surrounding area
Site 5 P2Rank #5
0.002
Likely same site as FPocket 1 7.9 Å 3 shared residues 50% 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_A0A0H3GJM3
AlphaFold DB full sequence Viewing
ColabFold KP13_03503
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.

56 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 6 records from similar proteins
Structural ligands 6 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
ATR PDB via homolog 507.2 Da · LogP -1.63 · TPSA 279.1 Open detail RCSB PDB
CAC PDB via homolog Detail RCSB PDB
EPR PDB via homolog Detail RCSB PDB
FLC PDB via homolog Detail RCSB PDB
PDN 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
ATR RCSB PDB Q3L181 507.2 Da LogP -1.63 TPSA 279.1 3 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
CAC RCSB PDB Q8ZNA1 137.0 Da LogP -0.52 TPSA 40.1 ✓ Ro5 ✓ Clean C[As](=O)(C)[O-]
EPR RCSB PDB Q9X265 319.4 Da LogP 2.92 TPSA 57.6 ✓ Ro5 Alert C/C(=C\c1ccccc1)/C=C2C(=O)N(C(=S)S2)CC(=O)O
FLC RCSB PDB Q46851 189.1 Da LogP -5.25 TPSA 140.6 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O
PDN RCSB PDB P62483 358.4 Da LogP 3.16 TPSA 94.8 ✓ Ro5 ✓ Clean C[C@]12CC(=O)[C@H]3[C@H]([C@@H]1CC[C@@]2(C(=CO)…
TOL RCSB PDB Q9X265 357.4 Da LogP 3.56 TPSA 49.8 ✓ Ro5 ✓ Clean CN(CC(=O)O)C(=S)c1cccc2c1ccc(c2C(F)(F)F)OC

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.