KpKP13 Protein target profile

L-aspartate oxidase

Accession: KP13_00805

Gene: AHE43170.1 nadB 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3H1L7
Length 539
Pocket druggability (P2Rank · AlphaFold DB model) 0.97
Direct ligand evidence 0 76 total records
Functional annotation 1 EC 6 GO
Target summary

Target candidate with partial support; inspect missing evidence before prioritizing.

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 (%)
33.459 Lower values reduce human off-target concern.
Human E-value
1.22e-23
Gut microbiome similarity
4.0% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
94.14 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) 0.97
Structure A0A0H3H1L7
Pocket Pocket 1
Druggability (FPocket) 0.347
Structure A0A0H3H1L7
Pocket Pocket 1
ColabFold model
P2Rank 0.986 · Pocket 1
FPocket 0.889 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 188 / 4744 genomes with a hit
Prevalence 4.0%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MNTTPDFSCDVLIIGSGAAGLSLALRLAEHSSVTVLSKGPISEGSTFYAQGGIAAVFDETDSIESHVEDTLIAGAGLCDRHAVTFVASNARSCVQWLIDQGVLFDTQVQANGEESYHLTREGGHSHRRILHAADATGKAVETTLVDKALAHPNIRILERSNAVDLIVSDKIGLPGTRRVVGAWIWNRNKERVETCSAKAVVLATGGAAKVYQYTTNPDVSSGDGIAMAWRAGCRVANLEFNQFHPTALYHPQARNFLLTEALRGEGAHLKRPDGTRFMPDFDERGELAPRDIVARAIDHEMKRLGVDCMFLDISHKPEAFVRQHFPMIYEKLLGLGIDLTKDPVPVVPAAHYTCGGVMVDDNGRTDVDGLYAIGEVSYTGLHGANRMASNSLLECLVYGWSAAEDITRRLPLAQKVATLPAWDESQVEIPDELVVIQHNWHELRLLMWDYVGIVRTTRRLERALRRITMLQQELDEYYARFRVSNNLLELRNLVQVAELIVRCAMLRKESRGLHYTLDYPQPLPDSGPSILSPLAHIKR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 6 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

6
  • GO:0016491 Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
  • GO:0008734 Catalysis of the reaction: L-aspartate + O2 = iminosuccinate + H2O2. Can also use fumatate as electron acceptor under anaerobic conditions, yielding succinate.
  • GO:0009435 The chemical reactions and pathways resulting in the formation of nicotinamide adenine dinucleotide (NAD+), a coenzyme that interconverts with its reduced form, NADH, in many redox and catabolic reactions. NAD+ is derived from various sources including vitamin B3.
  • GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
  • GO:0000166 Binding to a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
  • GO:0034628 The chemical reactions and pathways resulting in the formation of nicotinamide adenine dinucleotide (NAD+), beginning with the catabolism of L-aspartate into the precursor quinolinate. NAD+ is a coenzyme that interconverts with its reduced form, NADH, in many redox and catabolic reactions.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

29 records
Show feature table
Start End DB Term Name
425 539 Gene3D G3DSA:1.20.58.100 -
10 392 Pfam PF00890 FAD binding domain
10 392 InterPro IPR003953 FAD-dependent oxidoreductase 2, FAD binding domain
355 377 PRINTS PR00368 FAD-dependent pyridine nucleotide reductase signature
11 30 PRINTS PR00368 FAD-dependent pyridine nucleotide reductase signature
8 522 PANTHER PTHR42716 L-ASPARTATE OXIDASE
8 522 InterPro IPR005288 L-aspartate oxidase
10 259 FunFam G3DSA:3.50.50.60:FF:000060 L-aspartate oxidase
441 521 Pfam PF02910 Fumarate reductase flavoprotein C-term
441 521 InterPro IPR015939 Fumarate reductase/succinate dehydrogenase flavoprotein-like, C-terminal
238 353 SUPERFAMILY SSF56425 Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain
238 353 InterPro IPR027477 Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain superfamily
453 480 Coils Coil Coil
426 536 FunFam G3DSA:1.20.58.100:FF:000002 L-aspartate oxidase
4 445 SUPERFAMILY SSF51905 FAD/NAD(P)-binding domain
4 445 InterPro IPR036188 FAD/NAD(P)-binding domain superfamily
1 257 PIRSF PIRSF000171 SDHA_APRA_LASPO
341 527 PIRSF PIRSF000171 SDHA_APRA_LASPO
426 525 SUPERFAMILY SSF46977 Succinate dehydrogenase/fumarate reductase flavoprotein C-terminal domain
426 525 InterPro IPR037099 Fumarate reductase/succinate dehydrogenase flavoprotein-like, C-terminal domain superfamily
248 361 Gene3D G3DSA:3.90.700.10 Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain
248 361 InterPro IPR027477 Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain superfamily
10 404 Gene3D G3DSA:3.50.50.60 -
10 404 InterPro IPR036188 FAD/NAD(P)-binding domain superfamily
248 361 FunFam G3DSA:3.90.700.10:FF:000002 L-aspartate oxidase
370 377 PRINTS PR00411 Pyridine nucleotide disulphide reductase class-I signature
10 32 PRINTS PR00411 Pyridine nucleotide disulphide reductase class-I signature
8 520 NCBIfam TIGR00551 L-aspartate oxidase
8 520 InterPro IPR005288 L-aspartate oxidase

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
0.97
Likely same site as FPocket 1 3.4 Å 41 shared residues 100% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.391
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Surrounding area
Pocket 3 P2Rank #3
0.268
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Surrounding area
Pocket 4 P2Rank #4
0.109
Likely same site as FPocket 1 7.8 Å 9 shared residues 100% of smaller site
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Surrounding area
Pocket 5 P2Rank #5
0.08
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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 #1
0.347 Unusual size
Likely same site as P2Rank 1 3.4 Å 41 shared residues 100% of smaller site
Show in viewer
Surrounding area
Residue sets
UniProt: Active site:290-290 Proton acceptor
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_A0A0H3H1L7
AlphaFold DB full sequence Viewing
ColabFold KP13_00805
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.

76 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 26 records from similar proteins
Structural ligands 26 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
12J PDB via homolog 381.2 Da · LogP 4.33 · TPSA 38.3 Open detail RCSB PDB
3NP PDB via homolog Detail RCSB PDB
4YP PDB via homolog Detail RCSB PDB
AT5 PDB via homolog Detail RCSB PDB
BRS 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
12J RCSB PDB Q33862 381.2 Da LogP 4.33 TPSA 38.3 ✓ Ro5 ✓ Clean CC(C)Oc1cccc(c1)NC(=O)c2ccccc2I
3NP RCSB PDB P00363 119.1 Da LogP -0.26 TPSA 80.4 ✓ Ro5 ✓ Clean C(C[N+](=O)[O-])C(=O)O
4YP RCSB PDB Q33862 303.4 Da LogP 3.35 TPSA 69.4 ✓ Ro5 Alert CC1=C(C(=O)C(=C(C1=O)N)OC)C/C=C(\C)/CCC=C(C)C
AT5 RCSB PDB Q33862 366.2 Da LogP 2.79 TPSA 88.6 ✓ Ro5 ✓ Clean C[C@@H](C[C@H](C)C(=O)C1=C(C(=C(NC1=O)OC)OC)O)[…
BRS RCSB PDB P00363 322.7 Da LogP 4.01 TPSA 106.5 ✓ Ro5 ✓ Clean C[C@H](c1ccc(cc1)Cl)c2cc(cc(c2O)[N+](=O)[O-])[N…
CE1 RCSB PDB P00363 538.8 Da LogP 4.03 TPSA 94.1 1 viol. ✓ Clean CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCO
E23 RCSB PDB Q33862 335.4 Da LogP 4.93 TPSA 29.1 ✓ Ro5 ✓ Clean CC(C)(C)c1ccc(cc1)CNC(=O)c2ccccc2C(F)(F)F
E24 RCSB PDB Q33862 348.2 Da LogP 4.94 TPSA 29.1 ✓ Ro5 ✓ Clean c1ccc(c(c1)C(=O)NCc2ccc(cc2Cl)Cl)C(F)(F)F
EPH RCSB PDB Q33862 709.9 Da LogP 10.16 TPSA 134.4 2 viol. ✓ Clean CCCC=CCC=CCCCCCCCC(=O)O[C@H](COC(=O)CCCCCCC=CCC…
F3S RCSB PDB Q33862 295.8 Da LogP 2.59 TPSA 0.0 ✓ Ro5 ✓ Clean S1[Fe]2S[Fe]3[S]2[Fe]1S3
F6A RCSB PDB Q33862 341.3 Da LogP 5.62 TPSA 29.1 1 viol. ✓ Clean c1ccc(cc1)c2cccc(c2)NC(=O)c3ccccc3C(F)(F)F
FD8 RCSB PDB Q33862 447.3 Da LogP 6.45 TPSA 38.3 1 viol. ✓ Clean c1ccc(c(c1)C(=O)Nc2cccc(c2)Oc3c(c(c(c(c3F)F)F)F…
FES RCSB PDB Q33862 175.8 Da LogP 1.29 TPSA 0.0 ✓ Ro5 ✓ Clean S1[Fe]S[Fe]1
FLC RCSB PDB P00363 189.1 Da LogP -5.25 TPSA 140.6 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O
FTN RCSB PDB Q33862 323.3 Da LogP 4.74 TPSA 38.3 ✓ Ro5 ✓ Clean CC(C)Oc1cccc(c1)NC(=O)c2ccccc2C(F)(F)F
FUM RCSB PDB Q33862 116.1 Da LogP -0.29 TPSA 74.6 ✓ Ro5 ✓ Clean C(=C/C(=O)O)\C(=O)O
GUA RCSB PDB P00363 132.1 Da LogP 0.33 TPSA 74.6 ✓ Ro5 ✓ Clean C(CC(=O)O)CC(=O)O
HQO RCSB PDB P00363 259.3 Da LogP 3.69 TPSA 47.2 ✓ Ro5 Alert CCCCCCCc1cc(c2ccccc2[n+]1[O-])O
MLI RCSB PDB Q33862 102.0 Da LogP -3.12 TPSA 80.3 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(=O)[O-]
MQ7 RCSB PDB P00363 649.0 Da LogP 14.10 TPSA 34.1 2 viol. Alert CC1=C(C(=O)c2ccccc2C1=O)C\C=C(/C)\CC\C=C(/C)\CC…
MRN RCSB PDB Q33862 269.3 Da LogP 4.03 TPSA 38.3 ✓ Ro5 ✓ Clean Cc1ccccc1C(=O)Nc2cccc(c2)OC(C)C
OAA RCSB PDB P00363 131.1 Da LogP -2.22 TPSA 94.5 ✓ Ro5 ✓ Clean C(C(=O)C(=O)O)C(=O)[O-]
PBF RCSB PDB P00363 269.3 Da LogP 1.87 TPSA 80.4 ✓ Ro5 ✓ Clean c1ccc(cc1)C(=O)c2ccc(cc2)C[C@@H](C(=O)O)N
RQX RCSB PDB Q33862 263.3 Da LogP 2.41 TPSA 69.4 ✓ Ro5 Alert CCC/C(=C/CC1=C(C(=O)C(=C(C1=O)OC)N)C)/C
SIN RCSB PDB P10902 118.1 Da LogP -0.06 TPSA 74.6 ✓ Ro5 ✓ Clean C(CC(=O)O)C(=O)O
UQ1 RCSB PDB Q33862 250.3 Da LogP 2.32 TPSA 52.6 ✓ Ro5 Alert CC1=C(C(=O)C(=C(C1=O)OC)OC)CC=C(C)C

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.