KpATCC43816 Protein target profile

erythrose-4-phosphate dehydrogenase

Accession: VK055_4126

Gene: AIK82672.1 epd 3D evidence: AlphaFold DB model + ColabFold model Metabolism 1 reaction UniProt A0A0H3GSZ3
Length 342
Pocket druggability (P2Rank · AlphaFold DB model) 0.685
Metabolic reactions 1
Chokepoint Yes
Direct ligand evidence 0 60 total records
Functional annotation 1 EC 6 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
Hit
Human identity (%)
38.983 Lower values reduce human off-target concern.
Human E-value
1.8e-32
Gut microbiome similarity
3.9% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
53.03 Higher values support similarity to known essential genes.
DEG E-value
7.55e-127 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
96.59 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) 0.685
Structure A0A0H3GSZ3
Pocket Pocket 1
Druggability (FPocket) 0.7
Structure A0A0H3GSZ3
Pocket Pocket 8
ColabFold model
P2Rank 0.769 · Pocket 1
FPocket 0.462 · Pocket 3
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 186 / 4744 genomes with a hit
Prevalence 3.9%

Metabolic context

Reactions catalyzed, pathway membership, and centrality in the genome-scale metabolic network.

Explore metabolic network

Attractive metabolic target: catalyzes a producing chokepoint reaction in Vitamin B6 metabolism, no isoenzyme backup detected, more central than 91.5% of genes in this genome.

Relative network centrality 91.5% more central than 91.5% of genes in this genome
Chokepoint Chokepoint gene
Catalyzed reaction

1 reaction mapped to this gene in the metabolic model. Open the full network to see each one, with substrates/products and the reaction-reaction map.

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MTIRIAINGFGRIGRNVVRALYESGRRAEITVVAINELADAAGIAHLLKYDTSHGRFAWDVRQEREQLFVGDDAIRLLHEPTIAALPWRELAVDVVLDCTGVYGSREHGEAHLQAGAKKVLFSHPGGNDLDATVVYGVNQDELRAGHRIVSNASCTTNCIIPIIKLLDDAYGIESGTVTTIHSAMHDQQVIDAYHPDLRRTRAASQSIIPVDTKLAAGITRIFPQFNDRFEAIAVRVPTINVTAIDLSVTVKKPVKACEVNQLLQKAAQGAFHGIVDYTELPLVSTDFNHDPHSAIVDGTQTRVSGAHLIKTLVWCDNEWGFANRMLDTTLAMAAIGFRFDA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 6 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

6
  • GO:0016620 Catalysis of an oxidation-reduction (redox) reaction in which an aldehyde or ketone (oxo) group acts as a hydrogen or electron donor and reduces NAD or NADP.
  • GO:0051287 Binding to nicotinamide adenine dinucleotide, a coenzyme involved in many redox and biosynthetic reactions; binding may be to either the oxidized form, NAD+, or the reduced form, NADH.
  • GO:0042823 The chemical reactions and pathways resulting in the formation of pyridoxal phosphate, pyridoxal phosphorylated at the hydroxymethyl group of C-5, the active form of vitamin B6.
  • GO:0048001 Catalysis of the reaction: D-erythrose 4-phosphate + H2O + NAD+ = 4-phospho-D-erythronate + 2 H+ + NADH.
  • GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
  • GO:0008615 The chemical reactions and pathways resulting in the formation of pyridoxine, 2-methyl-3-hydroxy-4,5-bis(hydroxymethyl)pyridine, one of the vitamin B6 compounds.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

33 records
Show feature table
Start End DB Term Name
3 155 SMART SM00846 gp_dh_n_7
3 155 InterPro IPR020828 Glyceraldehyde 3-phosphate dehydrogenase, NAD(P) binding domain
160 316 Pfam PF02800 Glyceraldehyde 3-phosphate dehydrogenase, C-terminal domain
160 316 InterPro IPR020829 Glyceraldehyde 3-phosphate dehydrogenase, catalytic domain
3 104 Pfam PF00044 Glyceraldehyde 3-phosphate dehydrogenase, NAD binding domain
3 104 InterPro IPR020828 Glyceraldehyde 3-phosphate dehydrogenase, NAD(P) binding domain
153 160 ProSitePatterns PS00071 Glyceraldehyde 3-phosphate dehydrogenase active site.
153 160 InterPro IPR020830 Glyceraldehyde 3-phosphate dehydrogenase, active site
1 337 PIRSF PIRSF000149 GAPDH
1 337 InterPro IPR020831 Glyceraldehyde/Erythrose phosphate dehydrogenase family
3 328 Gene3D G3DSA:3.40.50.720 -
154 318 Gene3D G3DSA:3.30.360.10 Dihydrodipicolinate Reductase; domain 2
2 337 Hamap MF_01640 D-erythrose-4-phosphate dehydrogenase [epd].
2 337 InterPro IPR006422 D-erythrose-4-phosphate dehydrogenase
1 179 SUPERFAMILY SSF51735 NAD(P)-binding Rossmann-fold domains
1 179 InterPro IPR036291 NAD(P)-binding domain superfamily
4 328 NCBIfam TIGR01532 erythrose-4-phosphate dehydrogenase
4 328 InterPro IPR006422 D-erythrose-4-phosphate dehydrogenase
154 318 FunFam G3DSA:3.30.360.10:FF:000007 D-erythrose-4-phosphate dehydrogenase
3 164 FunFam G3DSA:3.40.50.720:FF:000001 Glyceraldehyde-3-phosphate dehydrogenase
155 317 SUPERFAMILY SSF55347 Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain
1 334 PANTHER PTHR43148 GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE 2
1 334 InterPro IPR020831 Glyceraldehyde/Erythrose phosphate dehydrogenase family
232 249 PRINTS PR00078 Glyceraldehyde-3-phosphate dehydrogenase signature
232 249 InterPro IPR020831 Glyceraldehyde/Erythrose phosphate dehydrogenase family
176 192 PRINTS PR00078 Glyceraldehyde-3-phosphate dehydrogenase signature
176 192 InterPro IPR020831 Glyceraldehyde/Erythrose phosphate dehydrogenase family
112 125 PRINTS PR00078 Glyceraldehyde-3-phosphate dehydrogenase signature
112 125 InterPro IPR020831 Glyceraldehyde/Erythrose phosphate dehydrogenase family
149 167 PRINTS PR00078 Glyceraldehyde-3-phosphate dehydrogenase signature
149 167 InterPro IPR020831 Glyceraldehyde/Erythrose phosphate dehydrogenase family
272 287 PRINTS PR00078 Glyceraldehyde-3-phosphate dehydrogenase signature
272 287 InterPro IPR020831 Glyceraldehyde/Erythrose phosphate dehydrogenase family

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
0.685
Likely same site as FPocket 8 2.6 Å 15 shared residues 94% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.04
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Surrounding area
Pocket 3 P2Rank #3
0.025
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Surrounding area
Pocket 4 P2Rank #4
0.013
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Surrounding area
Pocket 5 P2Rank #5
0.011
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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 #8
0.7
Likely same site as P2Rank 1 2.6 Å 15 shared residues 94% of smaller site
Show in viewer
Surrounding area
Residue sets
UniProt: Active site:155-155 Nucleophile
UniProt: Binding site:12-13
UniProt: Binding site:123-123
UniProt: Binding site:154-156
UniProt: Binding site:200-200
UniProt: Binding site:213-214
UniProt: Binding site:236-236
UniProt: Binding site:318-318
UniProt: Site:182-182 Activates thiol group during catalysis
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_A0A0H3GSZ3
AlphaFold DB full sequence Viewing
ColabFold VK055_4126
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.

60 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 10 records from similar proteins
Structural ligands 8 0 loaded crystals
Measured bioactivity 2 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
3CD PDB via homolog 697.9 Da · LogP -1.69 · TPSA 292.2 Open detail RCSB PDB
AW9 PDB via homolog Detail RCSB PDB
F4F PDB via homolog Detail RCSB PDB
G3H PDB via homolog Detail RCSB PDB
G3P 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
3CD RCSB PDB P0A9B6 697.9 Da LogP -1.69 TPSA 292.2 3 viol. ✓ Clean c1cc(c[n+](c1)[C@H]2[C@@H]([C@@H]([C@H](O2)CO[P…
AW9 RCSB PDB P04406 130.1 Da LogP -0.20 TPSA 63.6 ✓ Ro5 ✓ Clean COC(=O)C=CC(=O)O
F4F RCSB PDB P04406 282.3 Da LogP 1.60 TPSA 83.8 ✓ Ro5 ✓ Clean CC(C)[C@H]1CC[C@]([C@@H]2[C@@H]1C=C(COC2=O)C(=O…
G3H RCSB PDB P00362 170.1 Da LogP -1.34 TPSA 104.1 ✓ Ro5 ✓ Clean C([C@H](C=O)O)OP(=O)(O)O
G3P RCSB PDB P0A9B2 172.1 Da LogP -1.55 TPSA 107.2 ✓ Ro5 ✓ Clean C([C@H](COP(=O)(O)O)O)O
MLI RCSB PDB Q8DIW5 102.0 Da LogP -3.12 TPSA 80.3 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(=O)[O-]
PHN RCSB PDB P00355 180.2 Da LogP 2.78 TPSA 25.8 ✓ Ro5 ✓ Clean c1cc2ccc3cccnc3c2nc1
XPE RCSB PDB P04406 458.5 Da LogP -0.88 TPSA 123.5 1 viol. ✓ Clean C(COCCOCCOCCOCCOCCOCCOCCOCCOCCO)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.

Cross-references

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