KpKP13 Protein target profile

putative HTH-type transcriptional regulator

Accession: KP13_01315

Gene: AHE46620.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GIE0
Length 307
Pocket druggability (P2Rank · AlphaFold DB model) 0.072
Direct ligand evidence 0 10 total records
Functional annotation 0 EC 5 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
1.3% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
78.832 Higher values support similarity to known essential genes.
DEG E-value
1.93e-161 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
85.87 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) 0.072
Structure A0A0H3GIE0
Pocket Pocket 1
Druggability (FPocket) 0.62
Structure A0A0H3GIE0
Pocket Pocket 23
ColabFold model
P2Rank 0.151 · Pocket 1
FPocket 0.847 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 62 / 4744 genomes with a hit
Prevalence 1.3%

Sequence

Primary amino-acid sequence viewer.

MKNSLHLVHWKPYSFHFLRAHFMANNPTQLTILQDEIRRRYDTLSKRLKQVARYILDNSNSVAFDTVASIAQQADVPPSTLIRFANAFGFSGFNEMKQMFKQHLMEETANYTERARLFRQTTSDESSPPETPTEILNMFTMVNNQALQQLAMQTSSDDLERAVALLGEAENIYVIGLRRSFSVASYLTYALRHLDRKAFLIDGLGGMFTEQLSLVGPKDVVVAVSFSPYAREVVELVELGAQRKARQIAITDSQVSPLAAFSDVCFVVREAQVDGFRSQVASLCLAQTLAVSLALNSSQESEAKQKA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
Cytoplasmic

Gene Ontology (GO)

5
  • GO:1901135 The chemical reactions and pathways involving carbohydrate derivative.
  • GO:0097367 Binding to a carbohydrate derivative.
  • GO:0006355 Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
  • GO:0003700 A transcription regulator activity that modulates transcription of gene sets via selective and non-covalent binding to a specific double-stranded genomic DNA sequence (sometimes referred to as a motif) within a cis-regulatory region. Regulatory regions include promoters (proximal and distal) and enhancers. Genes are transcriptional units, and include bacterial operons.
  • GO:0003677 Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

19 records
Show feature table
Start End DB Term Name
33 302 PANTHER PTHR30514 GLUCOKINASE
33 302 InterPro IPR047640 HTH-type transcriptional regulator RpiR-like
166 295 Pfam PF01380 SIS domain
166 295 InterPro IPR001347 SIS domain
133 294 SUPERFAMILY SSF53697 SIS domain
133 294 InterPro IPR046348 SIS domain superfamily
162 301 ProSiteProfiles PS51464 SIS domain profile.
162 301 InterPro IPR001347 SIS domain
34 104 Pfam PF01418 Helix-turn-helix domain, rpiR family
34 104 InterPro IPR000281 Helix-turn-helix protein RpiR
35 108 SUPERFAMILY SSF46689 Homeodomain-like
35 108 InterPro IPR009057 Homeobox-like domain superfamily
31 107 ProSiteProfiles PS51071 RpiR-type HTH domain profile.
31 107 InterPro IPR000281 Helix-turn-helix protein RpiR
133 307 Gene3D G3DSA:3.40.50.10490 -
30 105 Gene3D G3DSA:1.10.10.10 -
30 105 InterPro IPR036388 Winged helix-like DNA-binding domain superfamily
157 292 CDD cd05013 SIS_RpiR
157 292 InterPro IPR035472 RpiR-like, SIS domain

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
0.072
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Surrounding area
Pocket 2 P2Rank #2
0.025
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Surrounding area
Pocket 3 P2Rank #3
0.018
Likely same site as FPocket 8 2.8 Å 9 shared residues 100% of smaller site
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Surrounding area
Pocket 4 P2Rank #4
0.014
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Surrounding area
Pocket 5 P2Rank #5
0.01
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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 #23
0.62
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Surrounding area
Pocket 2 FPocket #8
0.536 Unusual size
Likely same site as P2Rank 3 2.8 Å 9 shared residues 100% of smaller site
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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_A0A0H3GIE0
AlphaFold DB full sequence Viewing
ColabFold KP13_01315
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.

10 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 1 records from similar proteins
Structural ligands 1 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 9 similarity-based ZINC candidates
Best available ligand signal
MXE PDB via homolog 76.1 Da · LogP -0.37 · TPSA 29.5 Open detail RCSB PDB
ZINC1580161 ZINC proposed compound · Tanimoto 0.647 Detail ZINC
ZINC16052118 ZINC proposed compound · Tanimoto 0.647 Detail ZINC
ZINC16052257 ZINC proposed compound · Tanimoto 0.647 Detail ZINC
ZINC34317654 ZINC proposed compound · Tanimoto 0.647 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
MXE RCSB PDB A0A0H2VHQ2 76.1 Da LogP -0.37 TPSA 29.5 ✓ Ro5 ✓ Clean COCCO

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.