Protein target profile

KP13_03933

Pirin-like protein

Genome: KpKP13 Gene: AHE45322.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A6T7B4
Length 428
Pocket druggability 0.917
Direct ligand evidence 0 65 total records
Functional annotation 0 EC 0 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 (%)
36.68 Lower values reduce human off-target concern.
Human E-value
7.8e-43
Gut microbiome similarity
0.0% 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
Cytoplasmic

Structure confidence

ColabFold pLDDT
75.44 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

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 0.917
Structure A6T7B4
Pocket Pocket 1
P2Rank 0.78
Structure A6T7B4
Pocket Pocket 1
ColabFold model
FPocket 0.72 · Pocket 9
P2Rank 0.842 · Pocket 1
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 0 / 4744 genomes with a hit
Prevalence 0.0%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MQQGDRTGDPDATARLGAQRLDRLLRRLGLNQHRFAMLIKGLPDLGDRELTGGSLNQTHAQPLLELRNAAAEFGFRLVKRSPRRRETAMVYHLDKPGEVIEILHPSSIVPFLEQYRSFLLTTAYVVPDISLFTSDTDTQEKAMKQITGVYTAPAQHWVGDGFPVRSMFSYQTHGQQLSPFLLLDYAGPYTFPAGSEKRGVGEHPHRGFETVTIVYAGEVEHRDSTGRGGVIGPGDVQWMTAGAGILHEEFHSEAFTRSGGELKMIQLWVNLPAKDKMATPGYQSITAGTIPTVALANGAGQVRVIAGQYDDVSGPAHTFSPLNVWDLQLNQGHDLTLRQPEGWSTALVVLEGEVIINGSESAREGQLAVLSQAGDAVHLEATAPAKVLLMAGEPLHEPIVGYGPFVMNNKTQIAEAVRDFNSGRFGQI

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

No GO or EC annotations are currently loaded for this protein.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

13 records
Show feature table
Start End DB Term Name
162 272 CDD cd02909 cupin_pirin_N
324 426 Pfam PF05726 Pirin C-terminal cupin domain
324 426 InterPro IPR008778 Pirin, C-terminal domain
159 421 Gene3D G3DSA:2.60.120.10 Jelly Rolls
159 421 InterPro IPR014710 RmlC-like jelly roll fold
162 269 Pfam PF02678 Pirin
162 269 InterPro IPR003829 Pirin, N-terminal domain
144 427 SUPERFAMILY SSF51182 RmlC-like cupins
144 427 InterPro IPR011051 RmlC-like cupin domain superfamily
291 395 Gene3D G3DSA:2.60.120.10 Jelly Rolls
291 395 InterPro IPR014710 RmlC-like jelly roll fold
143 428 PANTHER PTHR43594 QUERCETIN 2,3-DIOXYGENASE
321 394 CDD cd02247 cupin_pirin_C

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 #1
0.917
Likely same site as P2Rank 1 2.3 Å 12 shared residues 92% 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
0.78
Likely same site as FPocket 1 2.3 Å 12 shared residues 92% of smaller site
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Surrounding area
Site 2 P2Rank #2
0.003
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Surrounding area
Site 3 P2Rank #3
0.001
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_A6T7B4
AlphaFold DB full sequence Viewing
ColabFold KP13_03933
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.

65 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 15 records from similar proteins
Structural ligands 5 0 loaded crystals
Measured bioactivity 10 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
3F1 PDB via homolog 399.5 Da · LogP 4.75 · TPSA 55.7 Open detail RCSB PDB
6JQ PDB via homolog Detail RCSB PDB
FJE PDB via homolog Detail RCSB PDB
K8M PDB via homolog Detail RCSB PDB
K8S 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
3F1 RCSB PDB O00625 399.5 Da LogP 4.75 TPSA 55.7 ✓ Ro5 ✓ Clean Cc1ccc(cc1)S(=O)(=O)N=[S@](C)c2ccc(cc2)OCc3cccc…
6JQ RCSB PDB O00625 550.7 Da LogP 5.85 TPSA 92.8 2 viol. ✓ Clean Cc1ccc(cc1NC(=O)c2ccc3c(c2)ccc(n3)CCCN4CCCC4)NC…
FJE RCSB PDB O00625 307.7 Da LogP 3.31 TPSA 71.8 ✓ Ro5 ✓ Clean c1cc(c(c(c1N)F)C(=O)c2c[nH]c3c2cc(cn3)Cl)F
K8M RCSB PDB O00625 473.9 Da LogP 5.28 TPSA 62.3 1 viol. ✓ Clean c1cc(ccc1NC(=O)[C@@H]2CC(CN(C2)C(=O)c3cc(cc(c3)…
K8S RCSB PDB O00625 444.9 Da LogP 5.34 TPSA 62.6 1 viol. ✓ Clean c1cc(cc(c1)C(=O)N2C[C@H](CC(C2)(F)F)C(=O)Nc3ccc…

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.