KpATCC43816 Protein target profile

flavodoxin-like fold family protein

Accession: VK055_4032

Gene: AIK82579.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism Not in network UniProt A0A0H3GXR4
Length 193
Pocket druggability (P2Rank · AlphaFold DB model) 0.588
Direct ligand evidence 0 188 total records
Functional annotation 1 EC 2 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
3.9% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
97.1 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) 0.588
Structure A0A0H3GXR4
Pocket Pocket 1
Druggability (FPocket) 0.586
Structure A0A0H3GXR4
Pocket Pocket 5
ColabFold model
P2Rank 0.636 · Pocket 1
FPocket 0.381 · Pocket 4
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 184 / 4744 genomes with a hit
Prevalence 3.9%

Metabolic context

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

This protein is not associated with the imported metabolic network for this genome.

Browse the genome's metabolic network

Imported from KpATCC43816.sbml · 2026-07-09

Sequence

Primary amino-acid sequence viewer.

MSNILIINGAKKFAHSNGQLNDTLTEVAESYLRDAGHDVKSVRAESEYDVKEEVQNFLWADVVIWQMPGWWMGAPWTVKKYMDDVFTEGHGSLYASDGRTRSDASKKYGSGGLVQGKKYMLSLTWNAPMEAFTDQDQFFHGVGVDGVYLPFHKANQFLGMEALPTFIANDVIKMPDVPRYIAEYRKHLAEIFG

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 2 GO

Subcellular localization

Localization
Unknown

Enzyme Commission (EC)

1

Gene Ontology (GO)

2
  • GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
  • GO:0008753 Catalysis of the reaction: NADPH + H+ + a quinone = NADP+ + a quinol.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

8 records
Show feature table
Start End DB Term Name
2 192 PANTHER PTHR46305 -
1 193 FunFam G3DSA:3.40.50.360:FF:000007 Drug activity modulator B
1 192 SUPERFAMILY SSF52218 Flavoproteins
1 192 InterPro IPR029039 Flavoprotein-like superfamily
1 193 Gene3D G3DSA:3.40.50.360 -
1 193 InterPro IPR029039 Flavoprotein-like superfamily
3 188 Pfam PF02525 Flavodoxin-like fold
3 188 InterPro IPR003680 Flavodoxin-like fold

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.

Download VMD script Full viewer

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Drag to rotate — click the view, then scroll to zoom.

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
0.588
Likely same site as FPocket 5 6.7 Å 10 shared residues 71% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.103
Likely same site as FPocket 2 1.9 Å 8 shared residues 89% of smaller site
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.008
Likely same site as FPocket 9 1.4 Å 9 shared residues 100% of smaller site
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #5
0.586
Likely same site as P2Rank 1 6.7 Å 10 shared residues 71% of smaller site
Show in viewer
Surrounding area
Pocket 2 FPocket #9
0.432
Likely same site as P2Rank 3 1.4 Å 9 shared residues 100% of smaller site
Show in viewer
Surrounding area
Pocket 3 FPocket #2
0.332
Likely same site as P2Rank 2 1.9 Å 8 shared residues 89% of smaller site
Show in viewer
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_A0A0H3GXR4
AlphaFold DB full sequence Viewing
ColabFold VK055_4032
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.

188 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 138 records from similar proteins
Structural ligands 38 0 loaded crystals
Measured bioactivity 100 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
0TX PDB via homolog 319.9 Da · LogP 4.81 · TPSA 28.2 Open detail RCSB PDB
1PQ PDB via homolog Detail RCSB PDB
372 PDB via homolog Detail RCSB PDB
3ZU PDB via homolog Detail RCSB PDB
3ZV 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
0TX RCSB PDB P16083 319.9 Da LogP 4.81 TPSA 28.2 ✓ Ro5 ✓ Clean CCN(CC)CCC[C@H](C)Nc1ccnc2c1ccc(c2)Cl
1PQ RCSB PDB P16083 259.4 Da LogP 2.78 TPSA 60.2 ✓ Ro5 ✓ Clean C[C@@H](CCCN)Nc1cc(cc2c1nccc2)OC
372 RCSB PDB P16083 243.3 Da LogP 1.62 TPSA 73.2 ✓ Ro5 ✓ Clean CC(=O)Nc1ccc2c(c1)C(C(=O)N2C)CC#N
3ZU RCSB PDB P16083 268.3 Da LogP 2.10 TPSA 78.4 ✓ Ro5 ✓ Clean COc1ccc2c(c1)C(=O)C(=[N+]2[O-])c3ccc(cc3)N
3ZV RCSB PDB P16083 267.3 Da LogP 3.02 TPSA 47.9 ✓ Ro5 ✓ Clean COc1ccc(cc1)C2=Nc3ccc(cc3C2=O)OC
465 RCSB PDB P16083 303.7 Da LogP 1.49 TPSA 114.7 ✓ Ro5 ✓ Clean CN1c2c3c(cc(nc3c(c(c2N)Cl)N=C)C(=O)N)C1=O
4X4 RCSB PDB P16083 374.4 Da LogP 3.54 TPSA 84.6 ✓ Ro5 ✓ Clean COc1ccc2c([nH]1)c(c3n2cc4c3nccc4)CCNC(=O)c5ccco5
6A1 RCSB PDB P16083 357.4 Da LogP 2.24 TPSA 79.0 ✓ Ro5 ✓ Clean C[N+](C)(CCNC1CCc2c3c1c(c4cc(ccc4n3cn2)OC)O)O
6T0 RCSB PDB P16083 240.3 Da LogP 2.82 TPSA 56.7 ✓ Ro5 ✓ Clean CC(C)Cn1cnc2c1c3ccccc3nc2N
79X RCSB PDB P16083 295.3 Da LogP 3.03 TPSA 60.7 ✓ Ro5 ✓ Clean COc1cc-2c(cc1OC)C(=O)n3c2cc4c3ccc(c4)O
A2Z RCSB PDB P16083 217.2 Da LogP 1.58 TPSA 40.5 ✓ Ro5 ✓ Clean CC1=CC(=O)N(c2c1ccc3c2OCO3)C
A7B RCSB PDB P16083 189.2 Da LogP 1.85 TPSA 42.1 ✓ Ro5 ✓ Clean CC1=CC(=O)Nc2c1cccc2OC
AA RCSB PDB P16083 195.2 Da LogP 2.39 TPSA 40.2 ✓ Ro5 Alert c1ccc2c(c1)c(c3ccccc3[nH+]2)N
AD1 RCSB PDB P16083 179.2 Da LogP -0.75 TPSA 57.6 ✓ Ro5 Alert CN1C[C@H](C2=CC(=O)C(=O)C=C21)O
AO RCSB PDB P16083 266.4 Da LogP 2.94 TPSA 20.6 ✓ Ro5 ✓ Clean CN(C)c1ccc2cc3ccc(cc3[nH+]c2c1)N(C)C
C09 RCSB PDB P16083 242.3 Da LogP 2.23 TPSA 76.8 ✓ Ro5 ✓ Clean CCOCc1[nH]c2c3ccccc3nc(c2n1)N
CB1 RCSB PDB P16083 252.2 Da LogP 0.42 TPSA 132.4 ✓ Ro5 ✓ Clean c1c(c(cc(c1N2CC2)[N+](=O)[O-])[N+](=O)[O-])C(=O…
CLQ RCSB PDB P16083 319.9 Da LogP 4.81 TPSA 28.2 ✓ Ro5 ✓ Clean CCN(CC)CCC[C@@H](C)Nc1ccnc2c1ccc(c2)Cl
DM2 RCSB PDB P16083 543.5 Da LogP 0.00 TPSA 206.1 3 viol. Alert C[C@H]1[C@H]([C@H](C[C@@H](O1)O[C@H]2C[C@@](Cc3…
ET RCSB PDB P16083 314.4 Da LogP 4.13 TPSA 55.9 ✓ Ro5 Alert CC[n+]1c2cc(ccc2c3ccc(cc3c1c4ccccc4)N)N
EWQ RCSB PDB P16083 233.3 Da LogP 1.86 TPSA 40.5 ✓ Ro5 ✓ Clean CC1=CC(=O)N(c2c1cc(cc2OC)OC)C
HGZ RCSB PDB P16083 249.3 Da LogP 1.86 TPSA 60.6 ✓ Ro5 ✓ Clean CC1=CC(=O)Nc2c1cc(c(c2OC)OC)OC
K17 RCSB PDB P16083 433.7 Da LogP 4.61 TPSA 28.7 ✓ Ro5 ✓ Clean c1[nH]c2c(n1)c(c(c(c2Br)Br)Br)Br
K25 RCSB PDB P16083 476.8 Da LogP 4.68 TPSA 31.9 ✓ Ro5 ✓ Clean CN(C)c1[nH]c2c(n1)c(c(c(c2Br)Br)Br)Br
LDP RCSB PDB P16083 153.2 Da LogP 0.60 TPSA 66.5 ✓ Ro5 Alert c1cc(c(cc1CCN)O)O
M42 RCSB PDB P16083 203.2 Da LogP 1.57 TPSA 51.3 ✓ Ro5 ✓ Clean CC1=CC(=O)Nc2c1ccc3c2OCO3
M49 RCSB PDB P16083 275.3 Da LogP 1.21 TPSA 87.3 ✓ Ro5 ✓ Clean CC(=O)NCC[C@@H]1c2cc(ccc2NC1=O)NC(=O)C
ML1 RCSB PDB P16083 232.3 Da LogP 1.86 TPSA 54.1 ✓ Ro5 ✓ Clean CC(=O)NCCc1c[nH]c2c1cc(cc2)OC
MXX RCSB PDB P16083 233.3 Da LogP 1.86 TPSA 40.5 ✓ Ro5 ✓ Clean CC1=CC(=O)N(c2c1c(ccc2OC)OC)C
MZX RCSB PDB P16083 219.2 Da LogP 1.85 TPSA 51.3 ✓ Ro5 ✓ Clean CC1=CC(=O)Nc2c1c(ccc2OC)OC
O73 RCSB PDB P16083 412.4 Da LogP 2.41 TPSA 129.5 ✓ Ro5 Alert Cc1c(c2c(n1C)C(=O)C=C(C2=O)NCCCCN)COc3ccc(cc3)[…
RZW RCSB PDB P16083 263.3 Da LogP 1.87 TPSA 49.7 ✓ Ro5 ✓ Clean CC1=CC(=O)N(c2c1c(c(cc2OC)OC)OC)C
VAP RCSB PDB P16083 263.3 Da LogP 1.87 TPSA 49.7 ✓ Ro5 ✓ Clean CC1=CC(=O)N(c2c1cc(c(c2OC)OC)OC)C
VK3 RCSB PDB P16083 172.2 Da LogP 2.01 TPSA 34.1 ✓ Ro5 Alert CC1=CC(=O)c2ccccc2C1=O
VVV RCSB PDB P16083 249.3 Da LogP 1.86 TPSA 60.6 ✓ Ro5 ✓ Clean CC1=CC(=O)Nc2c1c(c(cc2OC)OC)OC
XM5 RCSB PDB P16083 233.2 Da LogP 1.28 TPSA 49.7 ✓ Ro5 ✓ Clean CN1c2c(ccc3c2OCO3)C(=CC1=O)OC
YTR RCSB PDB P16083 233.3 Da LogP 1.86 TPSA 40.5 ✓ Ro5 ✓ Clean CC1=CC(=O)N(c2c1ccc(c2OC)OC)C
ZXZ RCSB PDB P16083 173.2 Da LogP 1.85 TPSA 22.0 ✓ Ro5 ✓ Clean CC1=CC(=O)N(c2c1cccc2)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.

Cross-references

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

Chemistry

ChEMBL CHEMBL300056 ChEMBL CHEMBL300728 ChEMBL CHEMBL52559 ChEMBL 52X ChEMBL CHEMBL53622 ChEMBL CHEMBL1770214 ChEMBL CHEMBL300195 ChEMBL MZC ChEMBL CHEMBL33700 ChEMBL CHEMBL457126 ChEMBL 6T3 ChEMBL CHEMBL1945729 ChEMBL 695 ChEMBL CHEMBL8602 ChEMBL CHEMBL55084 ChEMBL ML2 ChEMBL CHEMBL465378 ChEMBL XRA ChEMBL CHEMBL124254 ChEMBL CHEMBL134447 ChEMBL CHEMBL457992 ChEMBL CHEMBL4514167 ChEMBL CHEMBL457541 ChEMBL CHEMBL493424 ChEMBL CHEMBL455339 ChEMBL CHEMBL1967497 ChEMBL CHEMBL1836819 ChEMBL CHEMBL457539 ChEMBL CHEMBL495399 ChEMBL CHEMBL3770674 ChEMBL CHEMBL3770366 ChEMBL CHEMBL4435240 ChEMBL CHEMBL125082 ChEMBL CHEMBL446329 ChEMBL CHEMBL8150 ChEMBL CHEMBL1237241 ChEMBL CHEMBL456727 ChEMBL CHEMBL494566 ChEMBL CHEMBL458209 ChEMBL CHEMBL521826 ChEMBL CHEMBL456691 ChEMBL CHEMBL3770215 ChEMBL CHEMBL443636 ChEMBL CHEMBL34348 ChEMBL CHEMBL8219 ChEMBL CHEMBL457763 ChEMBL CHEMBL24057 ChEMBL CHEMBL3769989 ChEMBL DXH ChEMBL CHEMBL456646 ChEMBL STI ChEMBL 6T2 ChEMBL CHEMBL4463549 ChEMBL CHEMBL1836822 ChEMBL CHEMBL443429 ChEMBL CHEMBL37703 ChEMBL CHEMBL340884 ChEMBL CHEMBL4558270 ChEMBL CHEMBL1836826 ChEMBL CHEMBL133534 ChEMBL CHEMBL334645 ChEMBL CHEMBL124373 ChEMBL CHEMBL3770283 ChEMBL CHEMBL457764 ChEMBL CHEMBL4436961 ChEMBL CHEMBL467573 ChEMBL CHEMBL457540 ChEMBL STL ChEMBL CHEMBL1836825 ChEMBL CHEMBL521827 ChEMBL TE7 ChEMBL CHEMBL457533 ChEMBL CHEMBL511361 ChEMBL UXH ChEMBL CHEMBL323332 ChEMBL CHEMBL4534563 ChEMBL CHEMBL3769837 ChEMBL CHEMBL3771399 ChEMBL CHEMBL451333 ChEMBL CHEMBL505118 ChEMBL CHEMBL4443539 ChEMBL CHEMBL52755 ChEMBL CHEMBL111674 ChEMBL CHEMBL4553527 ChEMBL CHEMBL1836823 ChEMBL CHEMBL3770187 ChEMBL CHEMBL1836818 ChEMBL CHEMBL1237284 ChEMBL CHEMBL124374 ChEMBL CHEMBL1836817 ChEMBL CHEMBL147350 ChEMBL CHEMBL4443793 ChEMBL CHEMBL1836821 ChEMBL CHEMBL1836795 ChEMBL CHEMBL1836824 ChEMBL CHEMBL3769656 ChEMBL CHEMBL5893169 ChEMBL CHEMBL598253 ChEMBL CHEMBL611083 ChEMBL CHEMBL8238