KpATCC43816 Protein target profile

methionine aminotransferase, PLP-dependent

Accession: VK055_1888

Gene: AIK80494.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 6 reactions UniProt A0A0H3GPY3
Length 386
Pocket druggability (P2Rank · AlphaFold DB model) 0.83
Metabolic reactions 6
Chokepoint No
Direct ligand evidence 0 61 total records
Functional annotation 0 EC 5 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
Hit
Human identity (%)
34.247 Lower values reduce human off-target concern.
Human E-value
9.98e-35
Gut microbiome similarity
2.4% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
97.23 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) 0.83
Structure A0A0H3GPY3
Pocket Pocket 1
Druggability (FPocket) 0.165
Structure A0A0H3GPY3
Pocket Pocket 9
ColabFold model
P2Rank 0.847 · Pocket 1
FPocket 0.397 · Pocket 1
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 114 / 4744 genomes with a hit
Prevalence 2.4%

Metabolic context

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

Explore metabolic network

Metabolic context: more central than 97.3% of genes in this genome.

Relative network centrality 97.3% more central than 97.3% of genes in this genome
Chokepoint Not a chokepoint
Pathways

No specific KEGG pathway assigned - this reaction either has no KEGG mapping, or only matches a generic overview map with no route-level information.

Catalyzed reactions

6 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.

MNNNPLIPESKLPALGTTIFTQMSALAQQHQAINLSQGFPDFDGPRYLQERLAYHVAQGANQYAPMTGVPALREAIAGKTADLYGYQPDVNSEITVTAGATEALYAAITALVRRGDEVICFDPSYDSYAPAVALAGGELRRIALQPPHFRVDWRQFAAALSEKTRLVILNTPHNPSATVWQREDFAALWQAIAEREIYVLSDEVYEHICFAEGGHASVLAHPQLRERAVAVSSFGKTFHMTGWKVGYCVAPAAISAELRKVHQYLTFSVNTPAQLAIADMLREAPEHYRELPAFYRERRDLFIEALRPSRLEILPCEGTYFLLADYSAISDLDDVSFCRWLTTEVGVAAIPLSVFCADPFPHKLIRLCFAKQPATLLAAATRLCQL

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

5 GO

Subcellular localization

Localization
Unknown

Gene Ontology (GO)

5
  • GO:0009058 A cellular process consisting of the biochemical pathways by which a living organism synthesizes chemical substances. This typically represents the energy-requiring part of metabolism in which simpler substances are transformed into more complex ones.
  • 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:0030170 Binding to pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
  • GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
  • GO:0016212 Catalysis of the reaction: 2-oxoglutarate + L-kynurenine = H2O + kynurenate + L-glutamate. The product 4-(2-aminophenyl)-2,4-dioxobutanoate is converted into kynurenate by a spontaneous reaction. Also acts on 3-hydroxykynurenine to form xanthurenate.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

11 records
Show feature table
Start End DB Term Name
22 383 Gene3D G3DSA:3.90.1150.10 Aspartate Aminotransferase, domain 1
22 383 InterPro IPR015422 Pyridoxal phosphate-dependent transferase, small domain
62 283 FunFam G3DSA:3.40.640.10:FF:000033 Aspartate aminotransferase
10 385 SUPERFAMILY SSF53383 PLP-dependent transferases
10 385 InterPro IPR015424 Pyridoxal phosphate-dependent transferase
45 284 Gene3D G3DSA:3.40.640.10 -
45 284 InterPro IPR015421 Pyridoxal phosphate-dependent transferase, major domain
11 385 PANTHER PTHR43807 FI04487P
33 385 CDD cd00609 AAT_like
32 382 Pfam PF00155 Aminotransferase class I and II
32 382 InterPro IPR004839 Aminotransferase, class I/classII

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
0.83
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Surrounding area
Pocket 2 P2Rank #2
0.067
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Surrounding area
Pocket 3 P2Rank #3
0.038
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Surrounding area
Pocket 4 P2Rank #4
0.03
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Surrounding area
Pocket 5 P2Rank #5
0.02
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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_A0A0H3GPY3
AlphaFold DB full sequence Viewing
ColabFold VK055_1888
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 and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 11 records from similar proteins
Structural ligands 8 0 loaded crystals
Measured bioactivity 3 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
C6P PDB via homolog 352.3 Da · LogP 0.18 · TPSA 149.2 Open detail RCSB PDB
HCI PDB via homolog Detail RCSB PDB
IAC PDB via homolog Detail RCSB PDB
IK2 PDB via homolog Detail RCSB PDB
KMT 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
C6P RCSB PDB Q17CS8 352.3 Da LogP 0.18 TPSA 149.2 1 viol. ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](CS)C(=O)O)O
HCI RCSB PDB Q75WK2 150.2 Da LogP 1.70 TPSA 37.3 ✓ Ro5 ✓ Clean c1ccc(cc1)CCC(=O)O
IAC RCSB PDB Q16773 175.2 Da LogP 1.79 TPSA 53.1 ✓ Ro5 ✓ Clean c1ccc2c(c1)c(c[nH]2)CC(=O)O
IK2 RCSB PDB Q16773 322.2 Da LogP -0.19 TPSA 158.4 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CNOCC(=O)O)O
KMT RCSB PDB Q75WK2 148.2 Da LogP 0.39 TPSA 54.4 ✓ Ro5 ✓ Clean CSCCC(=O)C(=O)O
KYN RCSB PDB Q71RI9 208.2 Da LogP 0.25 TPSA 106.4 ✓ Ro5 ✓ Clean c1ccc(c(c1)C(=O)C[C@@H](C(=O)O)N)N
PMP RCSB PDB Q71RI9 248.2 Da LogP 0.16 TPSA 125.9 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN)O
QLP RCSB PDB Q17CS8 377.3 Da LogP -0.49 TPSA 192.3 1 viol. ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](CCC(=O)N)C(=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.