KpATCC43816 Protein target profile

bacterial regulatory, gntR family protein

Accession: VK055_1966

Gene: AIK80573.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GL11
Length 444
Pocket druggability (P2Rank · AlphaFold DB model) 0.853
Direct ligand evidence 0 69 total records
Functional annotation 0 EC 7 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 (%)
26.962 Lower values reduce human off-target concern.
Human E-value
2.75e-15
Gut microbiome similarity
0.6% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
N
DEG identity (%)
27.273 Higher values support similarity to known essential genes.

Structure confidence

ColabFold pLDDT
90.62 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) 0.853
Structure A0A0H3GL11
Pocket Pocket 1
Druggability (FPocket) 0.557
Structure A0A0H3GL11
Pocket Pocket 1
ColabFold model
P2Rank 0.789 · Pocket 1
FPocket 0.414 · Pocket 8
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 28 / 4744 genomes with a hit
Prevalence 0.6%

Metabolic context

Reactions catalyzed, pathway membership, and centrality in the genome-scale metabolic network.

This protein is not associated with the imported metabolic network for this genome.

Browse the genome's metabolic network

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MKARYKAVVDRYAQAIRSGQLPAGSRLPTHRTLAAGERISLATATRVYRELEEMGLVSGETGRGTFVRDLSLPPGHGVDQQVEAADVVDLNFNYPSLPDQGDALREALRQLAMVGDIDSHLRYQPHAGRLAERDIIARHLTCQHFAPDAENVLIVNGAQHGLAVTVMGLLRPGDVVAVDALTYSGFKVLAALYHLELAAIPCRPEGPDLQALQTLCQQRRVRAVYTMPTLHNPLGWVLNTGQRQALADLARQHDLLIIEDAAYARLVSHPPPPVVSYAPERTVYVTGFSKNIATGLRVGVVISPPRYRPEIERAIRATTWNTPTLISSLICAWIEDGTVARFETQKRQDARQRQQVAREVLCGLPVVSHPDSYFVWLPLGEESRADRLANALMERRISVSTAEPFCVSATIPQALRIALGSVPFDSLRPALLSVRDAVEYEQYR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

7 GO

Subcellular localization

Localization
Cytoplasmic

Gene Ontology (GO)

7
  • GO:0003824 Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
  • 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:0009058 A cellular process consisting of the biochemical pathways by which a living organism synthesizes chemical substances. This typically represents the energy-requiring part of metabolism in which simpler substances are transformed into more complex ones.
  • GO:0030170 Binding to pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
  • GO:0003677 Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
  • GO:0008483 Catalysis of the transfer of an amino group to an acceptor, usually a 2-oxo acid.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

22 records
Show feature table
Start End DB Term Name
5 67 Pfam PF00392 Bacterial regulatory proteins, gntR family
5 67 InterPro IPR000524 Transcription regulator HTH, GntR
4 72 Gene3D G3DSA:1.10.10.10 -
4 72 InterPro IPR036388 Winged helix-like DNA-binding domain superfamily
2 438 PANTHER PTHR46577 HTH-TYPE TRANSCRIPTIONAL REGULATORY PROTEIN GABR
75 438 SUPERFAMILY SSF53383 PLP-dependent transferases
75 438 InterPro IPR015424 Pyridoxal phosphate-dependent transferase
86 419 Pfam PF00155 Aminotransferase class I and II
86 419 InterPro IPR004839 Aminotransferase, class I/classII
4 77 SUPERFAMILY SSF46785 Winged helix DNA-binding domain
4 77 InterPro IPR036390 Winged helix DNA-binding domain superfamily
4 68 CDD cd07377 WHTH_GntR
4 68 InterPro IPR000524 Transcription regulator HTH, GntR
8 67 SMART SM00345 gntr3
8 67 InterPro IPR000524 Transcription regulator HTH, GntR
88 423 CDD cd00609 AAT_like
85 422 Gene3D G3DSA:3.90.1150.10 Aspartate Aminotransferase, domain 1
85 422 InterPro IPR015422 Pyridoxal phosphate-dependent transferase, small domain
122 338 Gene3D G3DSA:3.40.640.10 -
122 338 InterPro IPR015421 Pyridoxal phosphate-dependent transferase, major domain
2 70 ProSiteProfiles PS50949 GntR-type HTH domain profile.
2 70 InterPro IPR000524 Transcription regulator HTH, GntR

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
0.853
Likely same site as FPocket 1 4.1 Å 15 shared residues 94% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.389
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.097
Show in viewer
Surrounding area
Pocket 4 P2Rank #4
0.06
Show in viewer
Surrounding area
Pocket 5 P2Rank #5
0.046
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #1
0.557
Likely same site as P2Rank 1 4.1 Å 15 shared residues 94% 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_A0A0H3GL11
AlphaFold DB full sequence Viewing
ColabFold VK055_1966
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.

69 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 19 records from similar proteins
Structural ligands 10 0 loaded crystals
Measured bioactivity 9 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
3EE PDB via homolog 207.2 Da · LogP 0.50 · TPSA 97.5 Open detail RCSB PDB
AKG PDB via homolog Detail RCSB PDB
G9A PDB via homolog Detail RCSB PDB
HCI PDB via homolog Detail RCSB PDB
KMT 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
3EE RCSB PDB O57946 207.2 Da LogP 0.50 TPSA 97.5 ✓ Ro5 ✓ Clean c1ccc(c(c1)C(=O)CC(=O)C(=O)O)N
AKG RCSB PDB O57946 146.1 Da LogP -0.50 TPSA 91.7 ✓ Ro5 ✓ Clean C(CC(=O)O)C(=O)C(=O)O
G9A RCSB PDB O57946 130.1 Da LogP 0.10 TPSA 74.6 ✓ Ro5 ✓ Clean C(/C=C/C(=O)O)C(=O)O
HCI RCSB PDB Q75WK2 150.2 Da LogP 1.70 TPSA 37.3 ✓ Ro5 ✓ Clean c1ccc(cc1)CCC(=O)O
KMT RCSB PDB Q75WK2 148.2 Da LogP 0.39 TPSA 54.4 ✓ Ro5 ✓ Clean CSCCC(=O)C(=O)O
KYA RCSB PDB O57946 189.2 Da LogP 1.64 TPSA 70.4 ✓ Ro5 ✓ Clean c1ccc2c(c1)c(cc(n2)C(=O)O)O
KYN RCSB PDB O57946 208.2 Da LogP 0.25 TPSA 106.4 ✓ Ro5 ✓ Clean c1ccc(c(c1)C(=O)C[C@@H](C(=O)O)N)N
N5F RCSB PDB Q72LL6 392.3 Da LogP 0.50 TPSA 186.5 1 viol. ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](CCCC(=O)O)C(=…
PGU RCSB PDB Q72LL6 378.3 Da LogP 0.11 TPSA 186.5 1 viol. ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](CCC(=O)O)C(=O…
PMP RCSB PDB O57946 248.2 Da LogP 0.16 TPSA 125.9 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN)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.