KpATCC43816 Protein target profile

transcriptional regulator, putative

Accession: VK055_1940

Gene: AIK80547.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A1V7XH93

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Length 316

Pocket druggability (P2Rank · AlphaFold DB model) 0.866

Direct ligand evidence 0 37 total records

Functional annotation 0 EC 4 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.

Main supporting evidence

No similar human protein detected The current BLAST sequence screen did not find a significant human match, lowering apparent off-target risk. Moderate predicted binding pocket FPocket selected-pocket score 0.60. This supports review but is not experimental validation. Second pocket predictor agrees P2Rank predicted binding-site probability 0.87. Structure available AlphaFold DB model + ColabFold model Review the complete evidence below

Risks to review

Evidence coverage

Core evidence streams are available for this target.

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: 1.0% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG): N
DEG identity (%): 28.571 Higher values support similarity to known essential genes.

Structure confidence

ColabFold pLDDT: 92.02 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) 0.866

Structure A0A1V7XH93

Pocket Pocket 1

Druggability (FPocket) 0.597

Structure A0A1V7XH93

Pocket Pocket 16

ColabFold model

P2Rank 0.85 · Pocket 1

FPocket 0.529 · Pocket 4

Core conservation Accessory gene

Roary accessory

CoreCruncher accessory

Gut microbiome 46 / 4744 genomes with a hit

Prevalence 1.0%

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.

MSKQDEQRLLVKIATLYYSENKKQSEIASLLHLSQSFVSRALTRCQKEGLVKITVVQPTNIFVDLEKAIEERFGIRQAIVVDVGENASYSQVKHAIGSAAAHYVETRLRPEDLVGISSWSSTIRCMVDEMHPQNIRAAGVIQLLGGVGPNGNVQATILTQQLAAHLGCPAWLLPSQSIEHSVEERSRLVNSPDVAAVVAKFAEVDVAIVGIGELEPSQLLKNSGNYYNETMLQLLAARGAVGDICLHYYDAAGKPVLSQDEDPVIGMELEQIRRCPQVIALAGGVDKENAIRGALQGDYIDVLITDFPTARALIKG

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Subcellular localization

Localization: Cytoplasmic

Gene Ontology (GO)

GO:0030246 Binding to a carbohydrate, which includes monosaccharides, oligosaccharides and polysaccharides as well as substances derived from monosaccharides by reduction of the carbonyl group (alditols), by oxidation of one or more hydroxy groups to afford the corresponding aldehydes, ketones, or carboxylic acids, or by replacement of one or more hydroxy group(s) by a hydrogen atom. Cyclitols are generally not regarded as carbohydrates.
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:0006355 Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
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.

11 records

Show feature table

Start	End	DB	Term	Name
63	314	Pfam	PF04198	Putative sugar-binding domain
63	314	InterPro	IPR007324	Sugar-binding domain, putative
14	51	Pfam	PF01047	MarR family
14	51	InterPro	IPR000835	MarR-type HTH domain
13	59	SUPERFAMILY	SSF46785	Winged helix DNA-binding domain
13	59	InterPro	IPR036390	Winged helix DNA-binding domain superfamily
1	53	Gene3D	G3DSA:1.10.10.60	-
2	315	PANTHER	PTHR34294	TRANSCRIPTIONAL REGULATOR-RELATED
63	314	SUPERFAMILY	SSF100950	NagB/RpiA/CoA transferase-like
63	314	InterPro	IPR037171	NagB/RpiA transferase-like
54	314	Gene3D	G3DSA:3.40.50.1360	-

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

0.866

Likely same site as FPocket 1 2.5 Å 20 shared residues 100% of smaller site

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Surrounding area

Pocket 2 P2Rank #2

0.005

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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 #16

0.597

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Surrounding area

Pocket 2 FPocket #18

0.43

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Surrounding area

Pocket 3 FPocket #1

0.274

Likely same site as P2Rank 1 2.5 Å 20 shared residues 100% of smaller site

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Surrounding area

Binding pockets · P2Rank

Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Pocket 1 P2Rank #1

0.85

Likely same site as FPocket 7 3.1 Å 16 shared residues 89% of smaller site

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Surrounding area

Pocket 2 P2Rank #2

0.089

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Surrounding area

Pocket 3 P2Rank #3

0.008

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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 #4

0.529

Likely same site as P2Rank 1 7.5 Å 9 shared residues 82% of smaller site

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Surrounding area

Pocket 2 FPocket #3

0.512

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Surrounding area

Pocket 3 FPocket #7

0.349

Likely same site as P2Rank 1 3.1 Å 16 shared residues 89% 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_A0A1V7XH93	AlphaFold DB	—	—	full sequence	—	Viewing
ColabFold VK055_1940	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.

37 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 35 similarity-based ZINC candidates

Best available ligand signal

13P PDB via homolog 170.1 Da · LogP -1.34 · TPSA 104.1 Open detail RCSB PDB

G3H PDB via homolog Detail RCSB PDB

ZINC1532601 ZINC proposed compound · Tanimoto 0.630 Detail ZINC

ZINC32786787 ZINC proposed compound · Tanimoto 0.630 Detail ZINC

ZINC1530556 ZINC proposed compound · Tanimoto 0.586 Detail ZINC

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
13P RCSB PDB	3BXE	O32253	170.1 Da LogP -1.34 TPSA 104.1	✓ Ro5	✓ Clean	`C(C(=O)COP(=O)(O)O)O`
G3H RCSB PDB	2OKG	O32253	170.1 Da LogP -1.34 TPSA 104.1	✓ Ro5	✓ Clean	`C([C@H](C=O)O)OP(=O)(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
ZINC1532601 ZINC	0.630	200.1 Da LogP -1.98 TPSA 124.3	✓ Ro5	✓ Clean	`O=C[C@@H](O)[C@H](O)COP(=O)(O)O`
ZINC32786787 ZINC	0.630	200.1 Da LogP -1.98 TPSA 124.3	✓ Ro5	✓ Clean	`O=C[C@H](O)[C@H](O)COP(=O)(O)O`
ZINC1530556 ZINC	0.586	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	0.586	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`
ZINC3606137 ZINC	0.586	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	0.586	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`
ZINC8551307 ZINC	0.586	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	0.586	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`
ZINC100033330 ZINC	0.567	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)O`
ZINC100067275 ZINC	0.567	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)O`
ZINC100889630 ZINC	0.567	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)O`
ZINC104861723 ZINC	0.567	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…`
ZINC12503760 ZINC	0.567	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)O`
ZINC12503763 ZINC	0.567	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)O`
ZINC19850142 ZINC	0.567	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)O`
ZINC2508229 ZINC	0.567	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)O`
ZINC4545927 ZINC	0.567	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)(…`
ZINC4545928 ZINC	0.567	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…`
ZINC4545929 ZINC	0.567	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…`
ZINC2522549 ZINC	0.552	214.1 Da LogP -1.59 TPSA 124.3	✓ Ro5	✓ Clean	`O=CC[C@H](O)[C@H](O)COP(=O)(O)O`
ZINC4543673 ZINC	0.552	214.1 Da LogP -1.59 TPSA 124.3	✓ Ro5	✓ Clean	`O=CC[C@@H](O)[C@H](O)COP(=O)(O)O`
ZINC4543675 ZINC	0.552	214.1 Da LogP -1.59 TPSA 124.3	✓ Ro5	✓ Clean	`O=CC[C@H](O)[C@@H](O)COP(=O)(O)O`
ZINC4543677 ZINC	0.552	214.1 Da LogP -1.59 TPSA 124.3	✓ Ro5	✓ Clean	`O=CC[C@@H](O)[C@@H](O)COP(=O)(O)O`
ZINC100657408 ZINC	0.548	259.2 Da LogP -3.30 TPSA 170.5	1 viol.	✓ Clean	`N[C@H](C=O)[C@H](O)[C@H](O)[C@H](O)COP(=O)(O)O`
ZINC215934438 ZINC	0.548	259.2 Da LogP -3.30 TPSA 170.5	1 viol.	✓ Clean	`N[C@H](C=O)[C@H](O)[C@@H](O)[C@@H](O)COP(=O)(O)O`
ZINC255961849 ZINC	0.548	259.2 Da LogP -3.30 TPSA 170.5	1 viol.	✓ Clean	`N[C@H](C=O)[C@H](O)[C@H](O)[C@@H](O)COP(=O)(O)O`
ZINC255961850 ZINC	0.548	259.2 Da LogP -3.30 TPSA 170.5	1 viol.	✓ Clean	`N[C@H](C=O)[C@H](O)[C@@H](O)[C@H](O)COP(=O)(O)O`
ZINC5132021 ZINC	0.548	259.2 Da LogP -3.30 TPSA 170.5	1 viol.	✓ Clean	`N[C@@H](C=O)[C@@H](O)[C@H](O)[C@H](O)COP(=O)(O)O`
ZINC13518200 ZINC	0.531	276.2 Da LogP -2.32 TPSA 144.5	1 viol.	✓ Clean	`O=C[C@H](O)[C@@H](O)[C@H](O)[C@H](S)COP(=O)(O)O`
ZINC25721582 ZINC	0.516	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	0.516	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	0.516	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	0.516	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	0.516	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`
ZINC5975509 ZINC	0.500	202.1 Da LogP -2.19 TPSA 127.5	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@H](O)[C@H](O)CO`

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.

Sequence

UniProt A0A1V7XH93