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.
Main supporting evidence
Risks to review
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 modelP2Rank'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.
Sequence
Primary amino-acid sequence viewer.
MSNFLLEAGRQTLMLELQEASRLPERLGDDFIRAAETIIHCEGKLIVSGIGKSGHIGKKLAATFASTGTPAFFVHPAEALHGDLGMLDSRDVMLFISYSGSAKELDLIVPRLEEKGIPLLAMTGKSTSPLALAAKAVLDIAVEREACPMHLAPTSSTVNTLMLGDALAMAVMQARGFNEEDFARSHPAGALGARLLNKVHHLMRRDEEVPRVNTEANVMDAMLELSRTGLGLVAVCDEANRVQGVFTDGDLRRWLVAGGTLNDGVTRAMTRNGVTLQADSRAVEAKERLMKHKISAAPVVDENGQLVGAINLQNFYQAGIL
Functional annotations
Enzyme classification and Gene Ontology terms linked to this protein.
Subcellular localization
- Localization
- Cytoplasmic
Enzyme Commission (EC)
1Gene 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.
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.
How colors and pocket overlays are used
Pocket details Inspect a specific pocket, or open the full viewer
- Method
- -
- Score
- -
- Visible layer
- -
- Residues
- -
- Pocket properties
- -
Selecting a pocket opens its details and centers the viewer without clearing other active layers. Use Focus this pocket when you want to hide the rest; use Surface for the wider residue environment.
Binding pockets · P2Rank
Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2
Binding pockets · FPocket
Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4
Residue sets
Binding pockets · P2Rank
Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2
Binding pockets · FPocket
Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4
All structural evidence
Structural evidence
0 + 2Experimental 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.
Structural ligand evidence is available for this target.
Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in Target, use Open crystal to inspect it in the structure viewer.
No PDB structure with a co-crystallized ligand found for this exact protein.
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.
| 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…
|
Experimental bioactivity from ChEMBL measured directly on this protein. Score = pchembl (−log Ki/IC₅₀; higher = more potent).
No ChEMBL bioactivity data found for this exact protein.
Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).
No ChEMBL hits found through similar proteins.
Proposed virtual-screening candidates from ZINC. Score = Tanimoto similarity to a known binder (0–1; higher = more similar).
| Ligand | Tanimoto | MW · LogP · TPSA | Lipinski | PAINS | SMILES |
|---|---|---|---|---|---|
| ZINC2516111 ZINC | 0.917 | 262.2 Da LogP -3.47 TPSA 167.9 | 1 viol. | ✓ Clean |
O=P(O)(O)OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)CO
|
| ZINC2522704 ZINC | 0.917 | 262.2 Da LogP -3.47 TPSA 167.9 | 1 viol. | ✓ Clean |
O=P(O)(O)OC[C@H](O)[C@H](O)[C@@H](O)[C@@H](O)CO
|
| ZINC3869812 ZINC | 0.917 | 262.2 Da LogP -3.47 TPSA 167.9 | 1 viol. | ✓ Clean |
O=P(O)(O)OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO
|
| ZINC5975509 ZINC | 0.760 | 202.1 Da LogP -2.19 TPSA 127.5 | ✓ Ro5 | ✓ Clean |
O=P(O)(O)OC[C@H](O)[C@H](O)CO
|
| ZINC25721582 ZINC | 0.633 | 244.1 Da LogP -2.23 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=CC[C@H](O)[C@H](O)[C@@H](O)COP(=O)(O)O
|
| ZINC25721586 ZINC | 0.633 | 244.1 Da LogP -2.23 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=CC[C@H](O)[C@@H](O)[C@@H](O)COP(=O)(O)O
|
| ZINC4544030 ZINC | 0.633 | 244.1 Da LogP -2.23 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=CC[C@H](O)[C@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC4544032 ZINC | 0.633 | 244.1 Da LogP -2.23 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=CC[C@@H](O)[C@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC4544034 ZINC | 0.633 | 244.1 Da LogP -2.23 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=CC[C@H](O)[C@@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC4887586 ZINC | 0.633 | 260.1 Da LogP -2.35 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C(O)C[C@H](O)[C@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC4887587 ZINC | 0.633 | 260.1 Da LogP -2.35 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C(O)C[C@@H](O)[C@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC4887588 ZINC | 0.633 | 260.1 Da LogP -2.35 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C(O)C[C@H](O)[C@@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC4887589 ZINC | 0.633 | 260.1 Da LogP -2.35 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C(O)C[C@@H](O)[C@@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC8216074 ZINC | 0.622 | 477.3 Da LogP -2.95 TPSA 253.3 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@@](=O)(O)O[P@](=O)(O)…
|
| ZINC8551188 ZINC | 0.622 | 477.3 Da LogP -2.95 TPSA 253.3 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@](=O)(O)O[P@](=O)(O)O…
|
| ZINC100065511 ZINC | 0.613 | 260.1 Da LogP -3.26 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C(CO)[C@H](O)[C@H](O)[C@@H](O)COP(=O)(O)O
|
| ZINC100085043 ZINC | 0.613 | 260.1 Da LogP -3.26 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C(CO)[C@H](O)[C@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC104869937 ZINC | 0.613 | 260.1 Da LogP -3.26 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C(CO)[C@H](O)[C@@H](O)[C@@H](O)COP(=O)(O)O
|
| ZINC13537943 ZINC | 0.613 | 260.1 Da LogP -3.26 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C(CO)[C@H](O)[C@@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC85994845 ZINC | 0.613 | 260.1 Da LogP -3.26 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C(CO)[C@@H](O)[C@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC104864216 ZINC | 0.600 | 403.2 Da LogP -2.33 TPSA 223.9 | 2 viol. | ✓ Clean |
Nc1ccn([C@H]2O[C@@H](CO[P@](=O)(O)OP(=O)(O)O)[C…
|
| ZINC12504412 ZINC | 0.600 | 403.2 Da LogP -2.33 TPSA 223.9 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@@H](CO[P@@](=O)(O)OP(=O)(O)O)…
|
| ZINC12504413 ZINC | 0.600 | 403.2 Da LogP -2.33 TPSA 223.9 | 2 viol. | ✓ Clean |
Nc1ccn([C@H]2O[C@@H](CO[P@@](=O)(O)OP(=O)(O)O)[…
|
| ZINC12504414 ZINC | 0.600 | 403.2 Da LogP -2.33 TPSA 223.9 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(O)O)[…
|
| ZINC13431045 ZINC | 0.600 | 403.2 Da LogP -2.33 TPSA 223.9 | 2 viol. | ✓ Clean |
Nc1ccn([C@H]2O[C@@H](CO[P@@](=O)(O)OP(=O)(O)O)[…
|
| ZINC13431047 ZINC | 0.600 | 403.2 Da LogP -2.33 TPSA 223.9 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@@H](CO[P@@](=O)(O)OP(=O)(O)O)…
|
| ZINC13548733 ZINC | 0.600 | 403.2 Da LogP -2.33 TPSA 223.9 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(O)O)[…
|
| ZINC1530556 ZINC | 0.600 | 230.1 Da LogP -2.62 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=C[C@H](O)[C@@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC22116391 ZINC | 0.600 | 230.1 Da LogP -2.62 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=C[C@H](O)[C@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC33913782 ZINC | 0.600 | 403.2 Da LogP -2.33 TPSA 223.9 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(O)O)[…
|
| ZINC3606137 ZINC | 0.600 | 230.1 Da LogP -2.62 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=C[C@@H](O)[C@H](O)[C@H](O)COP(=O)(O)O
|
| ZINC3869426 ZINC | 0.600 | 230.1 Da LogP -2.62 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=C[C@@H](O)[C@@H](O)[C@@H](O)COP(=O)(O)O
|
| ZINC8215624 ZINC | 0.600 | 403.2 Da LogP -2.33 TPSA 223.9 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@@](=O)(O)OP(=O)(O)O)[…
|
| ZINC8551307 ZINC | 0.600 | 230.1 Da LogP -2.62 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=C[C@H](O)[C@H](O)[C@@H](O)COP(=O)(O)O
|
| ZINC8551308 ZINC | 0.600 | 230.1 Da LogP -2.62 TPSA 144.5 | ✓ Ro5 | ✓ Clean |
O=C[C@H](O)[C@@H](O)[C@@H](O)COP(=O)(O)O
|
| ZINC5132038 ZINC | 0.594 | 290.2 Da LogP -3.90 TPSA 185.0 | 1 viol. | ✓ Clean |
O=C(CO)[C@@H](O)[C@H](O)[C@H](O)[C@H](O)COP(=O)…
|
| ZINC12502055 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@@H](CO[P@@](=O)(O)O[P@@](=O)(…
|
| ZINC12502057 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@H]2O[C@@H](CO[P@@](=O)(O)O[P@@](=O)(O…
|
| ZINC12502058 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@@](=O)(O)O[P@@](=O)(O…
|
| ZINC13431057 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@H]2O[C@@H](CO[P@@](=O)(O)O[P@@](=O)(O…
|
| ZINC13431059 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@@H](CO[P@@](=O)(O)O[P@@](=O)(…
|
| ZINC25726736 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@H]2O[C@@H](CO[P@@](=O)(O)O[P@@](=O)(O…
|
| ZINC3861746 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@](=O)(O)O[P@@](=O)(O)…
|
| ZINC53683723 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@@H](CO[P@@](=O)(O)O[P@@](=O)(…
|
| ZINC82142138 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@@](=O)(O)O[P@@](=O)(O…
|
| ZINC82142140 ZINC | 0.583 | 483.2 Da LogP -2.21 TPSA 270.4 | 2 viol. | ✓ Clean |
Nc1ccn([C@@H]2O[C@H](CO[P@@](=O)(O)O[P@@](=O)(O…
|
| ZINC12501562 ZINC | 0.581 | 276.1 Da LogP -3.38 TPSA 185.0 | 1 viol. | ✓ Clean |
O=C(O)[C@H](O)[C@H](O)[C@@H](O)[C@@H](O)COP(=O)…
|
| ZINC1532623 ZINC | 0.581 | 276.1 Da LogP -3.38 TPSA 185.0 | 1 viol. | ✓ Clean |
O=C(O)[C@H](O)[C@@H](O)[C@H](O)[C@H](O)COP(=O)(…
|
| ZINC3869604 ZINC | 0.581 | 276.1 Da LogP -3.38 TPSA 185.0 | 1 viol. | ✓ Clean |
O=C(O)[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)COP(=O)…
|
| ZINC4545928 ZINC | 0.581 | 260.1 Da LogP -3.26 TPSA 164.8 | 1 viol. | ✓ Clean |
O=C[C@@H](O)[C@@H](O)[C@@H](O)[C@H](O)COP(=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.