KpATCC43816 Protein target profile

branched-chain amino acid aminotransferase

Accession: VK055_3206

Gene: AIK81774.1 ilvE 3D evidence: AlphaFold DB model + ColabFold model Metabolism 3 reactions UniProt A0A0H3GPS2
Length 309
Pocket druggability (P2Rank · AlphaFold DB model) 0.916
Metabolic reactions 3
Chokepoint Yes
Direct ligand evidence 0 61 total records
Functional annotation 1 EC 11 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 (%)
28.571 Lower values reduce human off-target concern.
Human E-value
5.99e-20
Gut microbiome similarity
4.4% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
44.518 Higher values support similarity to known essential genes.
DEG E-value
3.34e-87 Smaller values mean stronger essential-gene similarity.

Structure confidence

ColabFold pLDDT
95.83 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) 0.916
Structure A0A0H3GPS2
Pocket Pocket 1
Druggability (FPocket) 0.683
Structure A0A0H3GPS2
Pocket Pocket 4
ColabFold model
P2Rank 0.883 · Pocket 1
FPocket 0.654 · Pocket 4
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 210 / 4744 genomes with a hit
Prevalence 4.4%

Metabolic context

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

Explore metabolic network

Attractive metabolic target: catalyzes a producing & consuming chokepoint reaction in Glucosinolate biosynthesis, no isoenzyme backup detected, more central than 93.3% of genes in this genome.

Relative network centrality 93.3% more central than 93.3% of genes in this genome
Chokepoint Chokepoint gene
Catalyzed reactions

3 reactions 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.

MTTKKADYIWFNGEMVPWGEAKVHVMSHALHYGTSVFEGIRCYDSHKGPVVFRHREHMQRLHDSAKIYRFPVSQSVDELMEACREVIRTNNLTSAYIRPLVFVGDVGMGVNPPPGYNTDVIIAAFPWGAYLGAEALEQGIDAMVSSWNRAAPNTIPTAAKAGGNYLSSLLVGSEARRHGYQEGIALDVNGYISEGAGENLFEVKDGVLFTPPFTSSALPGITRDAIIKLAKDLGIEVREQVLSRESLYLADEVFMSGTAAEITPVRSVDGIQVGAGRRGPVTKRIQEAFFGLFTGETEDKWGWLDPVSK

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 11 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

11
  • GO:0009081 The chemical reactions and pathways involving amino acids containing a branched carbon skeleton, comprising isoleucine, leucine and valine.
  • 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.
  • GO:0004084 Catalysis of the reaction: a branched-chain amino acid (L-leucine, L-isoleucine and L-valine) + 2-oxoglutarate = L-glutamate + a 2-oxocarboxylate derived from the branched-chain amino acid.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0052656 Catalysis of the reaction: L-isoleucine + 2-oxoglutarate = (S)-3-methyl-2-oxopentanoate + L-glutamate.
  • GO:0052654 Catalysis of the reaction:L-leucine + 2-oxoglutarate = 4-methyl-2-oxopentanoate + L-glutamate.
  • GO:0052655 Catalysis of the reaction: L-valine + 2-oxoglutarate = 3-methyl-2-oxobutanoate + L-glutamate.
  • GO:0006532 The chemical reactions and pathways resulting in the formation of aspartate, the anion derived from aspartic acid, 2-aminobutanedioic acid.
  • GO:0009097 OBSOLETE. The chemical reactions and pathways resulting in the formation of isoleucine, (2R*,3R*)-2-amino-3-methylpentanoic acid.
  • GO:0009098 The chemical reactions and pathways resulting in the formation of L-leucine, 2-amino-4-methylpentanoic acid.
  • GO:0009099 The chemical reactions and pathways resulting in the formation of valine, 2-amino-3-methylbutanoic acid.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

17 records
Show feature table
Start End DB Term Name
138 289 Gene3D G3DSA:3.20.10.10 -
138 289 InterPro IPR043132 Branched-chain-amino-acid aminotransferase-like, C-terminal
10 127 Gene3D G3DSA:3.30.470.10 -
10 127 InterPro IPR043131 Branched-chain-amino-acid aminotransferase-like, N-terminal
10 307 NCBIfam TIGR01122 branched-chain-amino-acid transaminase
10 307 InterPro IPR005785 Branched-chain amino acid aminotransferase I
194 223 ProSitePatterns PS00770 Aminotransferases class-IV signature.
194 223 InterPro IPR018300 Aminotransferase, class IV, conserved site
6 291 PANTHER PTHR42743 AMINO-ACID AMINOTRANSFERASE
36 268 Pfam PF01063 Amino-transferase class IV
36 268 InterPro IPR001544 Aminotransferase class IV
10 127 FunFam G3DSA:3.30.470.10:FF:000001 Branched-chain-amino-acid aminotransferase
22 295 CDD cd01557 BCAT_beta_family
22 295 InterPro IPR033939 Branched-chain aminotransferase
138 289 FunFam G3DSA:3.20.10.10:FF:000001 Branched-chain-amino-acid aminotransferase
7 307 SUPERFAMILY SSF56752 D-aminoacid aminotransferase-like PLP-dependent enzymes
7 307 InterPro IPR036038 Aminotransferase-like, PLP-dependent enzymes

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
0.916
Likely same site as FPocket 1 1.6 Å 29 shared residues 91% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.461
Likely same site as FPocket 4 2.2 Å 11 shared residues 100% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.077
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Surrounding area
Pocket 4 P2Rank #4
0.023
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Surrounding area
Pocket 5 P2Rank #5
0.015
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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 #4
0.683
Likely same site as P2Rank 2 2.2 Å 11 shared residues 100% of smaller site
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Surrounding area
Pocket 2 FPocket #1
0.589 Unusual size
Likely same site as P2Rank 1 1.6 Å 29 shared residues 91% of smaller site
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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_A0A0H3GPS2
AlphaFold DB full sequence Viewing
ColabFold VK055_3206
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.

61 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 11 records from similar proteins
Structural ligands 11 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
2ML PDB via homolog 145.2 Da · LogP 0.83 · TPSA 63.3 Open detail RCSB PDB
4MV PDB via homolog Detail RCSB PDB
AKG PDB via homolog Detail RCSB PDB
GBN PDB via homolog Detail RCSB PDB
GUA 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
2ML RCSB PDB P0AB80 145.2 Da LogP 0.83 TPSA 63.3 ✓ Ro5 ✓ Clean CC(C)C[C@@](C)(C(=O)O)N
4MV RCSB PDB P0AB80 116.2 Da LogP 1.51 TPSA 37.3 ✓ Ro5 ✓ Clean CC(C)CCC(=O)O
AKG RCSB PDB A0A0A7GJ30 146.1 Da LogP -0.50 TPSA 91.7 ✓ Ro5 ✓ Clean C(CC(=O)O)C(=O)C(=O)O
GBN RCSB PDB Q5SM19 171.2 Da LogP 1.37 TPSA 63.3 ✓ Ro5 ✓ Clean C1CCC(CC1)(CC(=O)O)CN
GUA RCSB PDB P0AB80 132.1 Da LogP 0.33 TPSA 74.6 ✓ Ro5 ✓ Clean C(CC(=O)O)CC(=O)O
PGU RCSB PDB P0AB80 378.3 Da LogP 0.11 TPSA 186.5 1 viol. ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](CCC(=O)O)C(=O…
PMP RCSB PDB D1CCW1 248.2 Da LogP 0.16 TPSA 125.9 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN)O
PPE RCSB PDB Q5SM19 379.3 Da LogP -0.47 TPSA 187.8 1 viol. ✓ Clean Cc1c(c(c(c[nH+]1)COP(=O)(O)O)CN[C@@H](CCC(=O)O)…
PXG RCSB PDB O29329 368.3 Da LogP 2.02 TPSA 149.2 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CNc2cccc(c2)C(=O)O)O
PY5 RCSB PDB F2L0W0 348.3 Da LogP 1.05 TPSA 149.2 ✓ Ro5 ✓ Clean CCC[C@@H](C(=O)O)NCc1c(cnc(c1O)C)COP(=O)(O)O
TAM RCSB PDB O29329 163.2 Da LogP -1.17 TPSA 86.7 ✓ Ro5 ✓ Clean C(CO)C(CCO)(CCO)N

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.