Protein target profile

KP13_01136

EAL domain-containing protein

Genome: KpKP13 Gene: AHE44717.1 3D evidence: Experimental + ColabFold model UniProt A6T8V8
Length 405
Pocket druggability 0.942
Direct ligand evidence 1 53 total records
Functional annotation 0 EC 2 GO
Target summary

Strong target candidate with converging metabolic, structural and chemical evidence.

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
0.4% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Localization

Localization
CytoplasmicMembrane

Structure confidence

ColabFold pLDDT
94.96 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

PDB experimental structure

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket 0.942
Structure 3GFX
Pocket Pocket 23
P2Rank 0.548
Structure 3GFX
Pocket Pocket 1
ColabFold model
FPocket 0.51 · Pocket 14
P2Rank 0.529 · Pocket 1
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 17 / 4744 genomes with a hit
Prevalence 0.4%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MLTTLIYRSQVHPDRPPVDLDALVHRASSKNLPLGITGILLFNGLQFFQVLEGTEEALESLFSEIQSDPRHRDVVELMRDYSAYRRFHGTGMRILDLRLFETDGALEEILRFSTFGVTEPVNDRMFRLLSAFIADGGRYCLPEPLQPSRWMMMPASGTAAPQHLPGQPCQFALQAIVEPAKKRVSSFEALIRSPTGGSPVEMFAAIAAEDRYRFDLESKAYAFALAGQLPLGKHQLAINLLPGSLYHHPDAVGWLMDSLLAAGLRPDQVLIEVTETEVITCFDQFRKVLKALRVAGMKLAIDDFGAGYSGLSLLTRFQPDKIKVDAELVRDIHISGTKQAIVASVVRCCEDLGITVVAEGVETLEEWCWLQSVGIRLFQGFLFSRPCLNGIGEICWPVARQAMDL

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

2 GO

Gene Ontology (GO)

2
  • GO:0009882 The function of absorbing and responding to electromagnetic radiation with a wavelength of approximately 400-470nm. The response may involve a change in conformation.
  • GO:0071949 Binding to the oxidized form, FAD, of flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

23 records
Show feature table
Start End DB Term Name
146 391 SMART SM00052 duf2_2
146 391 InterPro IPR001633 EAL domain
141 405 Gene3D G3DSA:3.20.20.450 EAL domain
141 405 InterPro IPR035919 EAL domain superfamily
2 94 SMART SM01034 BLUF_2
2 94 InterPro IPR007024 BLUF domain
1 131 SUPERFAMILY SSF54975 Acylphosphatase/BLUF domain-like
1 131 InterPro IPR036046 Acylphosphatase-like domain superfamily
1 140 Gene3D G3DSA:3.30.70.100 -
150 400 ProSiteProfiles PS50883 EAL domain profile.
150 400 InterPro IPR001633 EAL domain
171 386 Pfam PF00563 EAL domain
171 386 InterPro IPR001633 EAL domain
2 93 ProSiteProfiles PS50925 BLUF domain profile.
2 93 InterPro IPR007024 BLUF domain
2 92 Pfam PF04940 Sensors of blue-light using FAD
2 92 InterPro IPR007024 BLUF domain
170 386 CDD cd01948 EAL
170 386 InterPro IPR001633 EAL domain
170 386 PANTHER PTHR33121 CYCLIC DI-GMP PHOSPHODIESTERASE PDEF
141 405 FunFam G3DSA:3.20.20.450:FF:000012 Diguanylate cyclase/phosphodiesterase domain 2 (EAL)
168 386 SUPERFAMILY SSF141868 EAL domain-like
168 386 InterPro IPR035919 EAL domain superfamily

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 · FPocket

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

Site 1 FPocket #23
0.942
Likely same site as P2Rank 3 4.7 Å 8 shared residues 100% of smaller site
Unusual size
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Surrounding area
Site 2 FPocket #1
0.82
Likely same site as P2Rank 1 2.4 Å 13 shared residues 93% of smaller site
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Surrounding area
Site 3 FPocket #4
0.44
Unusual size
Show in viewer
Surrounding area
Site 4 FPocket #2
0.274
Likely same site as P2Rank 5 2.0 Å 9 shared residues 100% of smaller site
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Surrounding area

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.548
Likely same site as FPocket 1 2.4 Å 13 shared residues 93% of smaller site
Show in viewer
Surrounding area
Site 2 P2Rank #2
0.464
Show in viewer
Surrounding area
Site 3 P2Rank #3
0.143
Likely same site as FPocket 23 4.7 Å 8 shared residues 100% of smaller site
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Surrounding area
Site 4 P2Rank #4
0.13
Show in viewer
Surrounding area
Site 5 P2Rank #5
0.084
Likely same site as FPocket 2 2.0 Å 9 shared residues 100% of smaller site
Show in viewer
Surrounding area
All structural evidence 6 experimental · 1 predicted

Structural evidence

6 + 1

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
PDB 2KB2
X-ray A Loaded
PDB 3GFX
X-ray A Viewing
PDB 3GFY
X-ray A Loaded
PDB 3GFZ
X-ray A Loaded
PDB 3GG0
X-ray A Loaded
PDB 3GG1
X-ray A Loaded
ColabFold KP13_01136
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.

53 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 1 same-protein records
Transferred evidence 2 records from similar proteins
Structural ligands 1 1 loaded crystals
Measured bioactivity 2 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
C2E PDB co-crystal 690.4 Da · LogP -3.05 · TPSA 349.6 Open detail RCSB PDB
CHEMBL2398348 ChEMBL via homolog · pchembl 7.70 (~20.0 nM) Detail ChEMBL
CHEMBL2398349 ChEMBL via homolog · pchembl 6.14 (~724.4 nM) Detail ChEMBL
ZINC12501894 ZINC proposed compound · Tanimoto 1.000 Detail ZINC
ZINC33494013 ZINC proposed compound · Tanimoto 1.000 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.

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Ligand Source crystal MW · LogP · TPSA Lipinski PAINS SMILES
C2E RCSB PDB 690.4 Da LogP -3.05 TPSA 349.6 3 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@H]4[C@H](O3)CO[P@@](=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.