KpKP13 Protein target profile

Arabinose 5-phosphate isomerase GutQ

Accession: KP13_31865

Gene: gutQ AHE43052.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GWM8
Length 321
Pocket druggability (P2Rank · AlphaFold DB model) 0.074
Direct ligand evidence 0 52 total records
Functional annotation 1 EC 8 GO
Target summary

Target candidate with partial support; inspect missing evidence before prioritizing.

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
1.5% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
47.799 Higher values support similarity to known essential genes.
DEG E-value
2.75e-98 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
93.86 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) 0.074
Structure A0A0H3GWM8
Pocket Pocket 1
Druggability (FPocket) 0.346
Structure A0A0H3GWM8
Pocket Pocket 10
ColabFold model
P2Rank 0.061 · Pocket 1
FPocket 0.347 · Pocket 4
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 73 / 4744 genomes with a hit
Prevalence 1.5%

Sequence

Primary amino-acid sequence viewer.

MSNFLLEAGRQTLMLELQEASRLPERLGDDFIRAAETIIHCEGKLIVSGIGKSGHIGKKLAATFASTGTPAFFVHPAEALHGDLGMLDSRDVMLFISYSGSAKELDLIVPRLEEKGIPLLAMTGKSTSPLALAAKAVLDIAVEREACPMHLAPTSSTVNTLMLGDALAMAVMQARGFNEEDFARSHPAGALGARLLNKVHHLMRRDEEVPRVNTEANVMDAMLELSRTGLGLVAVCDEANRVQGVFTDGDLRRWLVAGGTLNDGVTRAMTRNGVTLQADSRAVEAKERLMKHKISAAPVVDENGQLVGAINLQNFYQAGIL

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 8 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

8
  • GO:0016853 Catalysis of the geometric or structural changes within one molecule. Isomerase is the systematic name for any enzyme of EC class 5.
  • GO:0005975 The chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y.
  • GO:1901135 The chemical reactions and pathways involving carbohydrate derivative.
  • GO:0097367 Binding to a carbohydrate derivative.
  • GO:0019146 Catalysis of the reaction: D-arabinose 5-phosphate = D-ribulose 5-phosphate + 2 H+.
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0046872 Binding to a metal ion.
  • GO:0009103 The chemical reactions and pathways resulting in the formation of lipopolysaccharides, any of a group of related, structurally complex components of the outer membrane of Gram-negative bacteria.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

32 records
Show feature table
Start End DB Term Name
43 311 NCBIfam TIGR00393 KpsF/GutQ family sugar-phosphate isomerase
43 311 InterPro IPR004800 Phosphosugar isomerase, KdsD/KpsF-type
264 316 SUPERFAMILY SSF54631 CBS-domain pair
264 316 InterPro IPR046342 CBS domain superfamily
5 320 PANTHER PTHR42745 -
3 193 Gene3D G3DSA:3.40.50.10490 -
34 177 ProSiteProfiles PS51464 SIS domain profile.
34 177 InterPro IPR001347 SIS domain
208 256 SMART SM00116 cbs_1
208 256 InterPro IPR000644 CBS domain
272 320 SMART SM00116 cbs_1
272 320 InterPro IPR000644 CBS domain
195 313 CDD cd04604 CBS_pair_SIS_assoc
43 170 CDD cd05014 SIS_Kpsf
43 170 InterPro IPR035474 KpsF-like, SIS domain
3 193 FunFam G3DSA:3.40.50.10490:FF:000011 Arabinose 5-phosphate isomerase
199 256 Pfam PF00571 CBS domain
199 256 InterPro IPR000644 CBS domain
266 312 Pfam PF00571 CBS domain
266 312 InterPro IPR000644 CBS domain
194 318 Gene3D G3DSA:3.10.580.10 -
194 318 InterPro IPR046342 CBS domain superfamily
203 261 ProSiteProfiles PS51371 CBS domain profile.
203 261 InterPro IPR000644 CBS domain
269 321 ProSiteProfiles PS51371 CBS domain profile.
269 321 InterPro IPR000644 CBS domain
39 170 Pfam PF01380 SIS domain
39 170 InterPro IPR001347 SIS domain
6 255 SUPERFAMILY SSF53697 SIS domain
6 255 InterPro IPR046348 SIS domain superfamily
1 321 PIRSF PIRSF004692 KdsD_KpsF
1 321 InterPro IPR004800 Phosphosugar isomerase, KdsD/KpsF-type

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
0.074
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
0.346
Show in viewer
Surrounding area
Residue sets
UniProt: Binding site:75-75
UniProt: Site:104-104 Catalytically relevant
UniProt: Site:145-145 Catalytically relevant
UniProt: Site:186-186 Catalytically relevant
UniProt: Site:52-52 Catalytically relevant
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_A0A0H3GWM8
AlphaFold DB full sequence Viewing
ColabFold KP13_31865
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.

52 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 2 records from similar proteins
Structural ligands 2 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
A5P PDB via homolog 232.1 Da · LogP -2.83 · TPSA 147.7 Open detail RCSB PDB
CMK PDB via homolog Detail RCSB PDB
ZINC2516111 ZINC proposed compound · Tanimoto 0.917 Detail ZINC
ZINC2522704 ZINC proposed compound · Tanimoto 0.917 Detail ZINC
ZINC3869812 ZINC proposed compound · Tanimoto 0.917 Detail ZINC

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
A5P RCSB PDB A0A0H2VCL5 232.1 Da LogP -2.83 TPSA 147.7 1 viol. ✓ Clean C([C@H]([C@@H]([C@@H](COP(=O)(O)O)O)O)O)O
CMK RCSB PDB A6TEL6 543.4 Da LogP -4.78 TPSA 293.8 3 viol. ✓ Clean C1[C@H]([C@H]([C@H](O[C@@]1(C(=O)O)O[P@@](=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.