Protein target profile

PA3506

hypothetical protein

Genome: NC_002516.2

Gene: PA3506 3D evidence: AlphaFold DB model UniProt Q9HYA3
Length 560
Pocket druggability 0.725
Ligand records 102
EC / GO 0 / 8
Target summary

Target candidate with partial support; inspect missing evidence before prioritizing.

4 signals
How to read 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 TPW 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.

Overview

Basic information about this protein and its source genome.

Accession
PA3506
Gene
PA3506
Status
annotated
Amino acids
560
3D evidence
AlphaFold DB model

Target profile

Computed evidence for target prioritization.

Human off-target
hit
Human identity (%)
33.171
Human E-value
2.51e-15
Gut microbiome off-target
hit
Essential (DEG)
N
Localization
Cytoplasmic

Selected pocket evidence

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 0.725
Structure
Pocket

Sequence

Primary amino-acid sequence viewer.

MRNASQVTVGAAIAAFLEQCEVKAAFGVISIHNMPILDAFASRGNIRFVMARGEAGAANMADAYARTSGGLGVCLTSTGTAAGNAAGALVEALTAGTPLLHLTGQIETPYLDRSLAYIHEAPDQLSMLKAISKAAFRVRSVDTAISTLKLAVQTALTAPAGPVSVEIPIDIQSALINLPADLSPLPVPVARPSEQALDDLAERFAQARRPMLWLGGGARHAGPQVQRLLAMGVGVVTSTQGRGIVPEDDARSLGAFNLNKPVERFYQSCDAMLVVGSRLRGNETLKYELKLPRPLYRADADATAEGRCYPSDFFVCGDSERVLKGLADRLEGRLSVDPAFAADLAAARNQARAQLVDGLGPYASLVEQLQALAGRNFNWVRDVTVSNSTWGNRHLNIFSPRAGVHALGGGIGQGLAMGIGAAVGAAETAPGRKTFVLAGDGGFILNLGELATAVQERADMLIVLMNDQGYGVIKNIQDAAYGGRRCYVDLHTPDYAQLSASLGLRHAKVSDLKDFSAVLDGALAEPGPFLLEVDMLAVGSFKSIFAGPPTNDAKTDKATA

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

8 GO

Gene Ontology (GO)

8
  • GO:0005948 A dimeric (a large and a small chain) or tetrameric (two large and two small chains) enzyme complex. Catalyzes the formation of acetolactate from pyruvate.
  • GO:0003984 Catalysis of the reaction: H+ + 2 pyruvate = (2S)-2-acetolactate + CO2. Can also convert 2-oxobutanoate and pyruvate to (S)-2-ethyl-2-hydroxy-3-oxobutanoate.
  • GO:0050660 Binding to FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2.
  • GO:0000287 Binding to a magnesium (Mg) ion.
  • GO:0030976 Binding to thiamine pyrophosphate, the diphosphoric ester of thiamine. Acts as a coenzyme of several (de)carboxylases, transketolases, and alpha-oxoacid dehydrogenases.
  • GO:0009097 OBSOLETE. The chemical reactions and pathways resulting in the formation of isoleucine, (2R*,3R*)-2-amino-3-methylpentanoic acid.
  • GO:0009099 The chemical reactions and pathways resulting in the formation of valine, 2-amino-3-methylbutanoic acid.
  • 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.

Sequence Features

Domain/signature hits from InterPro and related databases.

26 records
Show feature table
Start End DB Term Name
2 184 Gene3D G3DSA:3.40.50.970 -
190 358 Gene3D G3DSA:3.40.50.1220 -
387 533 Pfam PF02775 Thiamine pyrophosphate enzyme, C-terminal TPP binding domain
387 533 InterPro IPR011766 Thiamine pyrophosphate enzyme, TPP-binding
423 442 ProSitePatterns PS00187 Thiamine pyrophosphate enzymes signature.
423 442 InterPro IPR000399 TPP-binding enzyme, conserved site
8 177 Pfam PF02776 Thiamine pyrophosphate enzyme, N-terminal TPP binding domain
8 177 InterPro IPR012001 Thiamine pyrophosphate enzyme, N-terminal TPP-binding domain
6 534 PANTHER PTHR18968 THIAMINE PYROPHOSPHATE ENZYMES
6 534 InterPro IPR045229 Thiamine pyrophosphate enzyme
1 24 Phobius SIGNAL_PEPTIDE Signal peptide region
198 326 Pfam PF00205 Thiamine pyrophosphate enzyme, central domain
198 326 InterPro IPR012000 Thiamine pyrophosphate enzyme, central domain
12 169 CDD cd07035 TPP_PYR_POX_like
1 6 Phobius SIGNAL_PEPTIDE_N_REGION N-terminal region of a signal peptide.
365 535 CDD cd00568 TPP_enzymes
361 538 Gene3D G3DSA:3.40.50.970 -
25 560 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
362 535 SUPERFAMILY SSF52518 Thiamin diphosphate-binding fold (THDP-binding)
362 535 InterPro IPR029061 Thiamin diphosphate-binding fold
7 17 Phobius SIGNAL_PEPTIDE_H_REGION Hydrophobic region of a signal peptide.
162 352 SUPERFAMILY SSF52467 DHS-like NAD/FAD-binding domain
162 352 InterPro IPR029035 DHS-like NAD/FAD-binding domain superfamily
6 189 SUPERFAMILY SSF52518 Thiamin diphosphate-binding fold (THDP-binding)
6 189 InterPro IPR029061 Thiamin diphosphate-binding fold
18 24 Phobius SIGNAL_PEPTIDE_C_REGION C-terminal region of a signal peptide.

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.

3D visualization script Full viewer

Loading 3D structure...

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Structural evidence

0 + 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
AlphaFold DB PA3506
AlphaFold DB full sequence Viewing
Pocket details FPocket · P2Rank — toggle visibility and zoom from here, or open full viewer

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET Sticks Spheres Surfaces Druggability Labels Zoom Positions
1 0.725

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.

102 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 102 via homologs
Structural ligands 14 0 loaded crystals
Bioactive compounds 38 50 ZINC proposed compounds
Drug-like & clean 94 1 PAINS alerts
Best available ligand signal
1IQ PDB via homolog 311.3 Da · LogP 2.22 · TPSA 91.7 Open detail RCSB PDB
Detail RCSB PDB 1IQ PDB via homolog
Detail RCSB PDB 1MM PDB via homolog
Detail RCSB PDB 1MS PDB via homolog
Detail RCSB PDB 1SM PDB via homolog

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
1IQ RCSB PDB P17597 311.3 Da LogP 2.22 TPSA 91.7 ✓ Ro5 ✓ Clean CC(C)[C@@]1(C(=O)NC(=N1)c2c(cc3ccccc3n2)C(=O)O)C
1MM RCSB PDB P17597 381.4 Da LogP 0.49 TPSA 149.5 ✓ Ro5 ✓ Clean Cc1nc(nc(n1)OC)NC(=O)NS(=O)(=O)c2ccccc2C(=O)OC
1MS RCSB PDB P17597 337.3 Da LogP 1.20 TPSA 144.2 ✓ Ro5 ✓ Clean Cc1ccnc(n1)NC(=O)NS(=O)(=O)c2ccccc2[N+](=O)[O-]
1SM RCSB PDB P17597 364.4 Da LogP 1.39 TPSA 127.3 ✓ Ro5 ✓ Clean Cc1cc(nc(n1)NC(=O)NS(=O)(=O)c2ccccc2C(=O)OC)C
6QL RCSB PDB P17597 430.4 Da LogP 2.58 TPSA 144.2 1 viol. ✓ Clean COc1cc(nc(n1)Oc2cccc(c2C(=O)O)Oc3nc(cc(n3)OC)OC…
6R4 RCSB PDB P17597 398.4 Da LogP 0.10 TPSA 138.6 ✓ Ro5 ✓ Clean CCCOC1=NN(C(=O)N1C)C(=O)NS(=O)(=O)c2ccccc2C(=O)…
6R5 RCSB PDB P17597 390.4 Da LogP -0.31 TPSA 138.6 1 viol. ✓ Clean Cc1c(c(cs1)C(=O)OC)S(=O)(=O)NC(=O)N2C(=O)N(C(=N…
F50 RCSB PDB P17597 76.1 Da LogP 0.02 TPSA 46.5 ✓ Ro5 ✓ Clean CC(=O)OO
FAB RCSB PDB P17597 855.6 Da LogP -2.87 TPSA 373.8 3 viol. Alert Cc1cc2c(cc1C)[N+](=C3C(=O)NC(=O)N=C3N2C[C@@H]([…
P22 RCSB PDB P17597 206.0 Da LogP 0.23 TPSA 113.3 ✓ Ro5 ✓ Clean CCO[P@](=O)(O)OP(=O)(O)O
PXD RCSB PDB P17597 483.4 Da LogP 2.61 TPSA 116.9 ✓ Ro5 ✓ Clean COc1cnc(n2c1nc(n2)NS(=O)(=O)c3c(cccc3OCC(F)F)C(…
TDM RCSB PDB P17597 468.4 Da LogP 2.51 TPSA 188.6 ✓ Ro5 ✓ Clean Cc1ncc(c(n1)N)CN\2C(=C(S/C2=C(\C)/O)CCO[P@@](=O…
TP9 RCSB PDB P17597 412.3 Da LogP -0.03 TPSA 182.8 1 viol. ✓ Clean Cc1ncc(c(n1)N)CN/C(=C(/CCO[P@](=O)([O-])O[P@@](…
TZD RCSB PDB P17597 440.3 Da LogP 0.72 TPSA 187.1 ✓ Ro5 ✓ Clean Cc1ncc(c(n1)N)CN2C(=C(SC2=O)CCO[P@@](=O)(O)OP(=…

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.