KpATCC43816 Protein target profile

aspartate kinase, monofunctional class

Accession: VK055_3062

Gene: AIK81647.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 1 reaction UniProt A0A0H3GQ40
Length 449
Pocket druggability (P2Rank · AlphaFold DB model) 0.732
Metabolic reactions 1
Chokepoint No
Direct ligand evidence 0 51 total records
Functional annotation 1 EC 7 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
No hit
Gut microbiome similarity
3.3% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
92.45 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) 0.732
Structure A0A0H3GQ40
Pocket Pocket 1
Druggability (FPocket) 0.596
Structure A0A0H3GQ40
Pocket Pocket 1
ColabFold model
P2Rank 0.805 · Pocket 1
FPocket 0.736 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 155 / 4744 genomes with a hit
Prevalence 3.3%

Metabolic context

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

Explore metabolic network

Metabolic context: more central than 97.0% of genes in this genome, no human homolog detected.

Relative network centrality 97.0% more central than 97.0% of genes in this genome
Chokepoint Not a chokepoint
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.

MTDLVVAKFGGTSVADFDAMNRSIDVALLDANTRIVVLSASAGVTNILVALAGGLEPTERFSQLDALRQIQFNILERLRYPNVIREEIERLLENITTLAEAAALASSTALTDELVSHGELMSTLLFVEILRERGIQAQWFDARKVLRTNDRFGRAEPDIAAVAELTQQQLAPRLAEGLVVTQGFIGSEAKGRTTTLGRGGSDYTAALLGEALNATRVDIWTDVPGIYTTDPRVAPAAKRIDVIAFEEAAEMATFGAKVLHPATLLPAVRSDIPVFVGSSKEPKAGGTLVCKTTENPPLFRALALRRRQTLLTLHSLNMLHSRGFLAEVFGILARHNISVDLITTSEVSVALTMDTTGSTSAGDTLLTQALLTELSSLCRVEVEENLALVALIGNELSKACGVGKEVFGVLEPFNIRMICYGASSHNLCFLVPGDDAEKVVQKLHHNLFE

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 7 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

7
  • GO:0008652 The chemical reactions and pathways resulting in the formation of amino acids, organic acids containing one or more amino substituents.
  • GO:0004072 Catalysis of the reaction: L-aspartate + ATP = 4-phospho-L-aspartate + ADP + H+.
  • GO:0009089 OBSOLETE. The chemical reactions and pathways resulting in the formation of lysine, via the intermediate diaminopimelate.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0009090 The chemical reactions and pathways resulting in the formation of homoserine, alpha-amino-gamma-hydroxybutyric acid.
  • GO:0009088 The chemical reactions and pathways resulting in the formation of L-threonine (2-amino-3-hydroxybutyric acid), a polar, uncharged, essential amino acid found in peptide linkage in proteins.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

33 records
Show feature table
Start End DB Term Name
4 277 Pfam PF00696 Amino acid kinase family
4 277 InterPro IPR001048 Aspartate/glutamate/uridylate kinase
6 14 ProSitePatterns PS00324 Aspartokinase signature.
6 14 InterPro IPR018042 Aspartate kinase, conserved site
313 394 ProSiteProfiles PS51671 ACT domain profile.
313 394 InterPro IPR002912 ACT domain
1 449 PANTHER PTHR21499 ASPARTATE KINASE
4 290 CDD cd04258 AAK_AKiii-LysC-EC
4 290 InterPro IPR041745 Lysine-sensitive aspartokinase 3, N-terminal catalytic domain
3 449 NCBIfam TIGR00657 aspartate kinase
3 449 InterPro IPR001341 Aspartate kinase
2 449 PIRSF PIRSF000726 Asp_kin
2 449 InterPro IPR005260 Aspartate kinase, monofunctional class
4 291 SUPERFAMILY SSF53633 Carbamate kinase-like
4 291 InterPro IPR036393 Acetylglutamate kinase-like superfamily
309 379 FunFam G3DSA:3.30.70.260:FF:000017 Aspartokinase
386 449 CDD cd04917 ACT_AKiii-LysC-EC_2
309 383 Gene3D G3DSA:3.30.70.260 -
380 448 FunFam G3DSA:3.30.70.260:FF:000023 Aspartokinase
323 377 Pfam PF01842 ACT domain
323 377 InterPro IPR002912 ACT domain
301 448 Gene3D G3DSA:3.30.70.260 -
377 448 SUPERFAMILY SSF55021 ACT-like
377 448 InterPro IPR045865 ACT-like domain
308 384 CDD cd04932 ACT_AKiii-LysC-EC_1
42 134 Gene3D G3DSA:1.20.120.1320 Aspartokinase, catalytic domain
42 134 InterPro IPR042199 Aspartokinase/Bifunctional aspartokinase/homoserine dehydrogenase, catalytic domain
3 449 NCBIfam TIGR00656 aspartate kinase, monofunctional class
3 449 InterPro IPR005260 Aspartate kinase, monofunctional class
6 289 Gene3D G3DSA:3.40.1160.10 -
6 289 InterPro IPR036393 Acetylglutamate kinase-like superfamily
297 393 SUPERFAMILY SSF55021 ACT-like
297 393 InterPro IPR045865 ACT-like domain

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
0.732
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.175
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.135
Show in viewer
Surrounding area
Pocket 4 P2Rank #4
0.045
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #1
0.596 Unusual size
Show in viewer
Surrounding area
Residue sets
UniProt: Binding site:119-119
UniProt: Binding site:221-222
UniProt: Binding site:227-227
UniProt: Binding site:232-232
UniProt: Binding site:257-258
UniProt: Binding site:45-45
UniProt: Binding site:8-11
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_A0A0H3GQ40
AlphaFold DB full sequence Viewing
ColabFold VK055_3062
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.

51 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 1 records from similar proteins
Structural ligands 1 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
TAR PDB via homolog 150.1 Da · LogP -2.12 · TPSA 115.1 Open detail RCSB PDB
ZINC1709621 ZINC proposed compound · Tanimoto 0.600 Detail ZINC
ZINC1709622 ZINC proposed compound · Tanimoto 0.600 Detail ZINC
ZINC1709623 ZINC proposed compound · Tanimoto 0.600 Detail ZINC
ZINC1709624 ZINC proposed compound · Tanimoto 0.600 Detail ZINC

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
TAR RCSB PDB Q9LYU8 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.

Cross-references

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