Genome KpKP13

Protein target profile

Multiple antibiotic resistance protein marR

Accession: KP13_05275

Gene: marR AHE44682.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GT75
Length 144
Pocket druggability (P2Rank · AlphaFold DB model) 0.019
Direct ligand evidence 0 64 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.

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 (%)
84.028 Higher values support similarity to known essential genes.
DEG E-value
5.3199999999999995e-89 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
90.95 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) 0.019
Structure A0A0H3GT75
Pocket Pocket 1
Druggability (FPocket) 0.755
Structure A0A0H3GT75
Pocket Pocket 2
ColabFold model
P2Rank 0.045 · Pocket 1
FPocket 0.699 · Pocket 9
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 61 / 4744 genomes with a hit
Prevalence 1.3%

Cross-references

External database identifiers for this protein, its structures, ligands, and metabolic reactions.

Sequence

Primary amino-acid sequence viewer.

MKSTSDLFNEMIPLGRLIQMVNQKKDRLLNDYLSPMDITATQFRVLCSIRCEVCITPVELKTVLSVDPGAMTRMLDRLACKGWIERLPNPADKRGVLVQLTPDGAALCEQCHQVVGQKLHQELTKNLSADEVAMLEQLLKKVLP

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Subcellular localization

Localization
Cytoplasmic

Gene Ontology (GO)

4
  • 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).
  • GO:0006950 Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a disturbance in organismal or cellular homeostasis, usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

22 records
Show feature table
Start End DB Term Name
31 132 SMART SM00347 marrlong4
31 132 InterPro IPR000835 MarR-type HTH domain
6 142 SUPERFAMILY SSF46785 Winged helix DNA-binding domain
6 142 InterPro IPR036390 Winged helix DNA-binding domain superfamily
38 96 Pfam PF01047 MarR family
38 96 InterPro IPR000835 MarR-type HTH domain
70 104 ProSitePatterns PS01117 MarR-type HTH domain signature.
70 104 InterPro IPR023187 Transcriptional regulator MarR-type, conserved site
7 142 PANTHER PTHR33164 TRANSCRIPTIONAL REGULATOR, MARR FAMILY
7 142 InterPro IPR039422 Transcription regulators MarR/SlyA-like
7 144 Gene3D G3DSA:1.10.10.10 -
7 144 InterPro IPR036388 Winged helix-like DNA-binding domain superfamily
11 144 ProSiteProfiles PS50995 MarR-type HTH domain profile.
11 144 InterPro IPR000835 MarR-type HTH domain
91 107 PRINTS PR00598 Bacterial regulatory protein MarR family signature
91 107 InterPro IPR000835 MarR-type HTH domain
72 87 PRINTS PR00598 Bacterial regulatory protein MarR family signature
72 87 InterPro IPR000835 MarR-type HTH domain
122 142 PRINTS PR00598 Bacterial regulatory protein MarR family signature
122 142 InterPro IPR000835 MarR-type HTH domain
55 71 PRINTS PR00598 Bacterial regulatory protein MarR family signature
55 71 InterPro IPR000835 MarR-type HTH 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
0.019
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.011
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #2
0.755
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_A0A0H3GT75
AlphaFold DB full sequence Viewing
ColabFold KP13_05275
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.

64 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 14 records from similar proteins
Structural ligands 14 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
3IB PDB via homolog 203.2 Da · LogP 2.58 · TPSA 53.1 Open detail RCSB PDB
BEZ PDB via homolog Detail RCSB PDB
CAQ PDB via homolog Detail RCSB PDB
CFA PDB via homolog Detail RCSB PDB
DHB 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
3IB RCSB PDB C5CSP2 203.2 Da LogP 2.58 TPSA 53.1 ✓ Ro5 ✓ Clean c1ccc2c(c1)c(c[nH]2)CCCC(=O)O
BEZ RCSB PDB C5CSP2 122.1 Da LogP 1.38 TPSA 37.3 ✓ Ro5 ✓ Clean c1ccc(cc1)C(=O)O
CAQ RCSB PDB C5CSP2 110.1 Da LogP 1.10 TPSA 40.5 ✓ Ro5 Alert c1ccc(c(c1)O)O
CFA RCSB PDB C5CSP2 221.0 Da LogP 2.46 TPSA 46.5 ✓ Ro5 ✓ Clean c1cc(c(cc1Cl)Cl)OCC(=O)O
DHB RCSB PDB Q7X0D9 154.1 Da LogP 0.80 TPSA 77.8 ✓ Ro5 Alert c1cc(c(cc1C(=O)O)O)O
FER RCSB PDB Q7X0D9 194.2 Da LogP 1.50 TPSA 66.8 ✓ Ro5 ✓ Clean COc1cc(ccc1O)\C=C\C(=O)O
HC4 RCSB PDB Q7X0D9 164.2 Da LogP 1.49 TPSA 57.5 ✓ Ro5 ✓ Clean c1cc(ccc1/C=C/C(=O)O)O
HID RCSB PDB C5CSP2 191.2 Da LogP 1.50 TPSA 73.3 ✓ Ro5 ✓ Clean c1cc2c(cc1O)c(c[nH]2)CC(=O)O
IAC RCSB PDB C5CSP2 175.2 Da LogP 1.79 TPSA 53.1 ✓ Ro5 ✓ Clean c1ccc2c(c1)c(c[nH]2)CC(=O)O
ICO RCSB PDB C5CSP2 161.2 Da LogP 1.87 TPSA 53.1 ✓ Ro5 ✓ Clean c1ccc2c(c1)c(c[nH]2)C(=O)O
IOP RCSB PDB C5CSP2 189.2 Da LogP 2.19 TPSA 53.1 ✓ Ro5 ✓ Clean c1ccc2c(c1)c(c[nH]2)CCC(=O)O
SAL RCSB PDB P40676 138.1 Da LogP 1.09 TPSA 57.5 ✓ Ro5 ✓ Clean c1ccc(c(c1)C(=O)O)O
V55 RCSB PDB Q7X0D9 152.1 Da LogP 1.21 TPSA 46.5 ✓ Ro5 ✓ Clean COc1cc(ccc1O)C=O
WOM RCSB PDB C5CSP2 241.5 Da LogP 2.32 TPSA 76.2 ✓ Ro5 ✓ Clean c1(c(c(nc(c1Cl)Cl)C(=O)O)Cl)N

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.