Protein target profile

KP13_04181

Aspartate aminotransferase

Genome: KpKP13 Gene: AHE45412.1 aspC 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GV21
Length 396
Pocket druggability 0.431
Direct ligand evidence 0 90 total records
Functional annotation 1 EC 10 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 (%)
42.748 Lower values reduce human off-target concern.
Human E-value
6.22e-101
Gut microbiome similarity
3.7% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
63.131 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
96.61 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

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 0.431
Structure A0A0H3GV21
Pocket Pocket 6
P2Rank 0.913
Structure A0A0H3GV21
Pocket Pocket 1
ColabFold model
FPocket 0.412 · Pocket 5
P2Rank 0.87 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 174 / 4744 genomes with a hit
Prevalence 3.7%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MFENITAAPADPILGLADLFRADDRPEKINLGIGVYKDETGKTPVLTSVKKAEQYLLENETTKNYLGIDGIPEFGRCTQELLFGKGNAIIADKRARTAQTPGGTGALRVAADFLAKNTDVKRVWVSNPSWPNHKSVFTSAGLEVREYAYYDAANHALDFDGLLASLNEAQAGDVVLFHGCCHNPTGIDPTLDQWQQLAQLSVEKGWLPLFDFAYQGFARGLEEDAEGLRAFAALHKELLVASSYSKNFGLYNERVGACTLVAADQETVDRAFSQMKSVIRANYSNPPAHGASVVATILSNDALRAIWEQELTDMRQRIQRMRLLFVNTLQEKGASRDFSFISQQNGMFSFSGLTKEQVLRLREEFAIYAVASGRINVAGMTPDNMAPLCEAIVAVL

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 10 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

10
  • 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:0008483 Catalysis of the transfer of an amino group to an acceptor, usually a 2-oxo acid.
  • GO:0006520 The chemical reactions and pathways involving amino acids, carboxylic acids containing one or more amino groups.
  • 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:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0042802 Binding to an identical protein or proteins.
  • GO:0004069 Catalysis of the reaction: L-aspartate + 2-oxoglutarate = oxaloacetate + L-glutamate.
  • GO:0004838 Catalysis of the reaction: L-tyrosine + 2-oxoglutarate = 3-(4-hydroxyphenyl)pyruvate + L-glutamate.
  • GO:0033585 OBSOLETE. The chemical reactions and pathways resulting in the formation of L-phenylalanine from other compounds, including chorismate, via the intermediate phenylpyruvate.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

23 records
Show feature table
Start End DB Term Name
27 392 Pfam PF00155 Aminotransferase class I and II
27 392 InterPro IPR004839 Aminotransferase, class I/classII
243 256 ProSitePatterns PS00105 Aminotransferases class-I pyridoxal-phosphate attachment site.
243 256 InterPro IPR004838 Aminotransferases, class-I, pyridoxal-phosphate-binding site
175 194 PRINTS PR00799 Aspartate aminotransferase signature
175 194 InterPro IPR000796 Aspartate/other aminotransferase
341 359 PRINTS PR00799 Aspartate aminotransferase signature
341 359 InterPro IPR000796 Aspartate/other aminotransferase
273 298 PRINTS PR00799 Aspartate aminotransferase signature
273 298 InterPro IPR000796 Aspartate/other aminotransferase
206 218 PRINTS PR00799 Aspartate aminotransferase signature
206 218 InterPro IPR000796 Aspartate/other aminotransferase
1 396 SUPERFAMILY SSF53383 PLP-dependent transferases
1 396 InterPro IPR015424 Pyridoxal phosphate-dependent transferase
5 392 Gene3D G3DSA:3.90.1150.10 Aspartate Aminotransferase, domain 1
5 392 InterPro IPR015422 Pyridoxal phosphate-dependent transferase, small domain
60 300 FunFam G3DSA:3.40.640.10:FF:000015 Aspartate aminotransferase
60 300 Gene3D G3DSA:3.40.640.10 -
60 300 InterPro IPR015421 Pyridoxal phosphate-dependent transferase, major domain
29 392 CDD cd00609 AAT_like
1 395 PANTHER PTHR11879 ASPARTATE AMINOTRANSFERASE
1 395 InterPro IPR000796 Aspartate/other aminotransferase
289 392 FunFam G3DSA:3.90.1150.10:FF:000001 Aspartate aminotransferase

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 · FPocket

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

Site 1 FPocket #6
0.431
Likely same site as P2Rank 2 1.7 Å 11 shared residues 85% of smaller site
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Surrounding area

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.913
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Surrounding area
Site 2 P2Rank #2
0.141
Likely same site as FPocket 6 1.7 Å 11 shared residues 85% of smaller site
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Surrounding area
Site 3 P2Rank #3
0.03
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Surrounding area
Site 4 P2Rank #4
0.025
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Surrounding area
Site 5 P2Rank #5
0.018
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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_A0A0H3GV21
AlphaFold DB full sequence Viewing
ColabFold KP13_04181
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.

90 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 40 records from similar proteins
Structural ligands 39 0 loaded crystals
Measured bioactivity 1 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
0A0 PDB via homolog 147.1 Da · LogP -0.74 · TPSA 100.6 Open detail RCSB PDB
3IB PDB via homolog Detail RCSB PDB
3QP PDB via homolog Detail RCSB PDB
4TB PDB via homolog Detail RCSB PDB
5PV 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
0A0 RCSB PDB P00509 147.1 Da LogP -0.74 TPSA 100.6 ✓ Ro5 ✓ Clean C[C@](CC(=O)O)(C(=O)O)N
3IB RCSB PDB P95468 203.2 Da LogP 2.58 TPSA 53.1 ✓ Ro5 ✓ Clean c1ccc2c(c1)c(c[nH]2)CCCC(=O)O
3QP RCSB PDB P00509 361.2 Da LogP 0.66 TPSA 173.9 ✓ Ro5 ✓ Clean Cc1ccc(c(c1O)/C=N/[C@@H](CC(=O)O)C(=O)O)COP(=O)…
4TB RCSB PDB P95468 170.2 Da LogP 2.16 TPSA 37.3 ✓ Ro5 ✓ Clean c1cc(sc1)CCCC(=O)O
5PV RCSB PDB P95468 178.2 Da LogP 2.48 TPSA 37.3 ✓ Ro5 ✓ Clean c1ccc(cc1)CCCCC(=O)O
77E RCSB PDB P00509 348.3 Da LogP 0.83 TPSA 163.2 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CC[C@H](CCC(=O)O)N)O
AHC RCSB PDB P95468 165.2 Da LogP 1.29 TPSA 63.3 ✓ Ro5 Alert c1cc(ccc1CCC(=O)O)N
AKG RCSB PDB P00509 146.1 Da LogP -0.50 TPSA 91.7 ✓ Ro5 ✓ Clean C(CC(=O)O)C(=O)C(=O)O
CLT RCSB PDB P95468 164.2 Da LogP 2.09 TPSA 37.3 ✓ Ro5 ✓ Clean c1ccc(cc1)CCCC(=O)O
CXP RCSB PDB P95468 156.2 Da LogP 2.43 TPSA 37.3 ✓ Ro5 ✓ Clean C1CCC(CC1)CCC(=O)O
GUA RCSB PDB P00509 132.1 Da LogP 0.33 TPSA 74.6 ✓ Ro5 ✓ Clean C(CC(=O)O)CC(=O)O
HCI RCSB PDB P00509 150.2 Da LogP 1.70 TPSA 37.3 ✓ Ro5 ✓ Clean c1ccc(cc1)CCC(=O)O
IOP RCSB PDB P00509 189.2 Da LogP 2.19 TPSA 53.1 ✓ Ro5 ✓ Clean c1ccc2c(c1)c(c[nH]2)CCC(=O)O
IVA RCSB PDB P00509 102.1 Da LogP 1.12 TPSA 37.3 ✓ Ro5 ✓ Clean CC(C)CC(=O)O
KET RCSB PDB C7E5X4 363.2 Da LogP -0.53 TPSA 188.1 ✓ Ro5 ✓ Clean Cc1c(c(c(c[nH+]1)COP(=O)(O)O)C=NC(CC(=O)O)C(=O)…
KYN RCSB PDB P05202 208.2 Da LogP 0.25 TPSA 106.4 ✓ Ro5 ✓ Clean c1ccc(c(c1)C(=O)C[C@@H](C(=O)O)N)N
LMR RCSB PDB C7E5X4 134.1 Da LogP -1.09 TPSA 94.8 ✓ Ro5 ✓ Clean C([C@@H](C(=O)O)O)C(=O)O
MAE RCSB PDB P00509 116.1 Da LogP -0.29 TPSA 74.6 ✓ Ro5 ✓ Clean C(=C/C(=O)O)/C(=O)O
MPL RCSB PDB P00509 262.2 Da LogP -0.05 TPSA 107.9 ✓ Ro5 ✓ Clean Cc1c(c(c(c[n+]1C)COP(=O)(O)O)C=O)O
MPP RCSB PDB P95468 210.2 Da LogP 1.72 TPSA 55.8 ✓ Ro5 ✓ Clean COc1ccc(cc1OC)CCC(=O)O
NOP RCSB PDB P00509 263.1 Da LogP -0.24 TPSA 131.0 ✓ Ro5 ✓ Clean Cc1c(c(c(c[n+]1[O-])COP(=O)(O)O)C=O)O
NPL RCSB PDB P00509 263.2 Da LogP -0.41 TPSA 116.9 ✓ Ro5 ✓ Clean Cc1c(c(c(c[n+]1C)COP(=O)(O)O)CN)O
OAA RCSB PDB P05202 131.1 Da LogP -2.22 TPSA 94.5 ✓ Ro5 ✓ Clean C(C(=O)C(=O)O)C(=O)[O-]
PDG RCSB PDB P00509 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)…
PGU RCSB PDB P00509 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…
PJ7 RCSB PDB D3H0F7 127.1 Da LogP 0.56 TPSA 76.5 ✓ Ro5 ✓ Clean c1c(coc1C(=O)O)N
PL6 RCSB PDB P00509 376.3 Da LogP 0.44 TPSA 186.8 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)\C=N\[C@@H](CCC(=O)O)C…
PLA RCSB PDB P00509 378.3 Da LogP 0.11 TPSA 186.5 1 viol. ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@](C)(CC(=O)O)C(=…
PLR RCSB PDB P04693 233.2 Da LogP 1.01 TPSA 99.9 ✓ Ro5 ✓ Clean Cc1c(cnc(c1O)C)COP(=O)(O)O
PMG RCSB PDB P00509 392.3 Da LogP 0.50 TPSA 186.5 1 viol. ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@](C)(CCC(=O)O)C(…
PMP RCSB PDB P00509 248.2 Da LogP 0.16 TPSA 125.9 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN)O
PP3 RCSB PDB P00509 320.2 Da LogP 0.27 TPSA 149.2 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](C)C(=O)O)O
PPD RCSB PDB P00509 364.2 Da LogP -0.28 TPSA 186.5 1 viol. ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](CC(=O)O)C(=O)…
PPT RCSB PDB P95468 164.2 Da LogP 2.01 TPSA 37.3 ✓ Ro5 ✓ Clean Cc1ccc(cc1)CCC(=O)O
PSZ RCSB PDB P00509 374.3 Da LogP 2.08 TPSA 149.2 ✓ Ro5 ✓ Clean Cc1c(c(c(cn1)COP(=O)(O)O)CNc2cc(sc2)C(=O)O)O
PY4 RCSB PDB P00509 334.3 Da LogP 0.66 TPSA 149.2 ✓ Ro5 ✓ Clean CC[C@H](C(=O)O)NCc1c(cnc(c1O)C)COP(=O)(O)O
PY5 RCSB PDB P00509 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
PY6 RCSB PDB P00509 362.3 Da LogP 1.44 TPSA 149.2 ✓ Ro5 ✓ Clean CCCC[C@@H](C(=O)O)NCc1c(cnc(c1O)C)COP(=O)(O)O
SIN RCSB PDB P00509 118.1 Da LogP -0.06 TPSA 74.6 ✓ Ro5 ✓ Clean C(CC(=O)O)C(=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.