Protein target profile

VK055_4699

dihydrodipicolinate synthase

Genome: KpATCC43816 Gene: dapA AIK83233.1 3D evidence: Experimental + ColabFold model Metabolism 1 reaction UniProt W9BBZ5
Length 280
Pocket druggability 0.574
Metabolic reactions 1
Chokepoint Yes
Direct ligand evidence 0 58 total records
Functional annotation 1 EC 5 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 (%)
29.167 Lower values reduce human off-target concern.
Human E-value
3.67e-22
Gut microbiome similarity
3.8% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
91.786 Higher values support similarity to known essential genes.
DEG E-value
0.0 Smaller values mean stronger essential-gene similarity.

Localization

Localization
Cytoplasmic

Structure confidence

ColabFold pLDDT
98.77 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 0.574
Structure 6UE0
Pocket Pocket 1
P2Rank 0.787
Structure 6UE0
Pocket Pocket 1
ColabFold model
FPocket 0.968 · Pocket 4
P2Rank 0.982 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 182 / 4744 genomes with a hit
Prevalence 3.8%

Cross-references

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

Structure

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 Lysine biosynthesis, more central than 92.0% of genes in this genome.

Relative network centrality 92.0% more central than 92.0% 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.

MDENGNVCRTSLKKLIDYHVANGTSAIVSVGTTGESATLSHEEHGDVVMMTLELADGRIPVIAGTGANATAEAISLTKRFNDSGVVGCLTVTPYYNRPTQEGLFQHFKAIAEHTDLPQILYNVPSRTGCDMLPETVGRLAEIKNIVGIKEATGNLSRVHQIKELVSDDFILLSGDDATGMDFMQLGGVGVISVTANVAAREMADMCRLALAGQFAEARAINQRLMPLHTKLFVEPNPIPVKWGCKALGLVATDTLRLPMTPITDHGREAVTAALKHAGLL

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 5 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

5
  • GO:0016829 Catalysis of the cleavage of C-C, C-O, C-N and other bonds by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond. They differ from other enzymes in that two substrates are involved in one reaction direction, but only one in the other direction. When acting on the single substrate, a molecule is eliminated and this generates either a new double bond or a new ring.
  • GO:0009089 OBSOLETE. The chemical reactions and pathways resulting in the formation of lysine, via the intermediate diaminopimelate.
  • GO:0008840 Catalysis of the reaction: L-aspartate 4-semialdehyde + pyruvate = (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinate + H2O + H+.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0019877 OBSOLETE. The chemical reactions and pathways resulting in the formation of diaminopimelate, both as an intermediate in lysine biosynthesis and as a component (as meso-diaminopimelate) of the peptidoglycan of Gram-negative bacterial cell walls.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

29 records
Show feature table
Start End DB Term Name
121 151 ProSitePatterns PS00666 Dihydrodipicolinate synthase signature 2.
121 151 InterPro IPR020625 Schiff base-forming aldolase, active site
26 43 ProSitePatterns PS00665 Dihydrodipicolinate synthase signature 1.
26 43 InterPro IPR020624 Schiff base-forming aldolase, conserved site
1 276 Pfam PF00701 Dihydrodipicolinate synthetase family
1 276 InterPro IPR002220 DapA-like
1 276 Hamap MF_00418 4-hydroxy-tetrahydrodipicolinate synthase [dapA].
1 276 InterPro IPR005263 4-hydroxy-tetrahydrodipicolinate synthase, DapA
2 279 PANTHER PTHR12128 DIHYDRODIPICOLINATE SYNTHASE
2 279 InterPro IPR002220 DapA-like
1 276 NCBIfam TIGR00674 4-hydroxy-tetrahydrodipicolinate synthase
59 77 PRINTS PR00146 Dihydrodipicolinate synthase signature
59 77 InterPro IPR002220 DapA-like
91 107 PRINTS PR00146 Dihydrodipicolinate synthase signature
91 107 InterPro IPR002220 DapA-like
116 133 PRINTS PR00146 Dihydrodipicolinate synthase signature
116 133 InterPro IPR002220 DapA-like
23 44 PRINTS PR00146 Dihydrodipicolinate synthase signature
23 44 InterPro IPR002220 DapA-like
1 280 SUPERFAMILY SSF51569 Aldolase
1 280 PIRSF PIRSF001365 DHDPS
1 280 InterPro IPR002220 DapA-like
1 280 Gene3D G3DSA:3.20.20.70 Aldolase class I
1 280 InterPro IPR013785 Aldolase-type TIM barrel
1 278 SMART SM01130 DHDPS_2
1 278 InterPro IPR002220 DapA-like
1 280 FunFam G3DSA:3.20.20.70:FF:000046 4-hydroxy-tetrahydrodipicolinate synthase
1 274 CDD cd00950 DHDPS
1 274 InterPro IPR005263 4-hydroxy-tetrahydrodipicolinate synthase, DapA

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
All structural evidence 1 experimental · 1 predicted

Structural evidence

1 + 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 6UE0
X-ray 1.89 Å AAA,BBB
100.0% 1-280
Viewing
ColabFold VK055_4699
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.

58 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 8 records from similar proteins
Structural ligands 7 0 loaded crystals
Measured bioactivity 1 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
2KT PDB via homolog 102.1 Da · LogP 0.05 · TPSA 54.4 Open detail RCSB PDB
3OH PDB via homolog Detail RCSB PDB
FLC PDB via homolog Detail RCSB PDB
LYZ PDB via homolog Detail RCSB PDB
OXL 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
2KT RCSB PDB D0CFC3 102.1 Da LogP 0.05 TPSA 54.4 ✓ Ro5 ✓ Clean CCC(=O)C(=O)O
3OH RCSB PDB Q9I4W3 90.1 Da LogP -0.55 TPSA 57.5 ✓ Ro5 ✓ Clean C(CO)C(=O)O
FLC RCSB PDB A9DKW4 189.1 Da LogP -5.25 TPSA 140.6 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O
LYZ RCSB PDB D0CFC3 162.2 Da LogP -1.50 TPSA 109.6 ✓ Ro5 ✓ Clean C(C[C@@H](C(=O)O)N)[C@H](CN)O
OXL RCSB PDB D0CFC3 88.0 Da LogP -3.51 TPSA 80.3 ✓ Ro5 ✓ Clean C(=O)(C(=O)[O-])[O-]
PYR RCSB PDB D0CFC3 88.1 Da LogP -0.34 TPSA 54.4 ✓ Ro5 ✓ Clean CC(=O)C(=O)O
TLA RCSB PDB P0A6L2 150.1 Da LogP -2.12 TPSA 115.1 ✓ Ro5 ✓ Clean [C@@H]([C@H](C(=O)O)O)(C(=O)O)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.