KpATCC43816 Protein target profile

fructose-bisphosphate aldolase, class II

Accession: VK055_4128

Gene: fbaA AIK82674.1 3D evidence: AlphaFold DB model + ColabFold model Metabolism 4 reactions UniProt A0A0H3GV85
Length 359
Pocket druggability (P2Rank · AlphaFold DB model) 0.256
Metabolic reactions 4
Chokepoint No
Direct ligand evidence 0 120 total records
Functional annotation 1 EC 7 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
4.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
95.45 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) 0.256
Structure A0A0H3GV85
Pocket Pocket 1
Druggability (FPocket) 0.48
Structure A0A0H3GV85
Pocket Pocket 1
ColabFold model
P2Rank 0.29 · Pocket 1
FPocket 0.489 · Pocket 2
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 201 / 4744 genomes with a hit
Prevalence 4.2%

Metabolic context

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

Explore metabolic network

Metabolic context: more central than 99.4% of genes in this genome, no human homolog detected.

Relative network centrality 99.4% more central than 99.4% of genes in this genome
Chokepoint Not a chokepoint
Catalyzed reactions

4 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.

MSKIFDFVKPGVITGDDVQKVFQVAKENNFALPAVNCVGTDSINAVLEAAAKVRSPVIVQFSNGGAAFIAGKGVKTDVPQGAAILGAISGAHHVHQMAEHYGVPVILHTDHCAKKLLPWIDGLLDAGEKHFAATGKPLFSSHMIDLSEESLHENIEICSKYLARMAKMGMTLEIELGCTGGEEDGVDNSHMDASALYTQPEDVDYAYTELSKISPRFTIAASFGNVHGVYKPGNVVLTPTILRDSQEYVSKKHNLPHNSLNFVFHGGSGSSAQEIKDSVSYGVVKMNIDTDTQWATWDGILQYYKANEAYLQGQLGNPKGEDQPNKKYYDPRVWLRAAQTSMVTRLEQAFKELNAIDVL

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 7 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

7
  • GO:0005975 The chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y.
  • GO:0016832 Catalysis of the cleavage of a C-C bond in a molecule containing a hydroxyl group and a carbonyl group to form two smaller molecules, each being an aldehyde or a ketone.
  • GO:0008270 Binding to a zinc ion (Zn).
  • GO:0004332 Catalysis of the reaction: beta-D-fructose 1,6-bisphosphate = D-glyceraldehyde 3-phosphate + dihydroxyacetone phosphate.
  • GO:0006096 The chemical reactions and pathways resulting in the breakdown of a carbohydrate into pyruvate, with the concomitant production of a small amount of ATP and the reduction of NAD(P) to NAD(P)H. Glycolysis begins with the metabolism of a carbohydrate to generate products that can enter the pathway and ends with the production of pyruvate. Pyruvate may be converted to acetyl-coenzyme A, ethanol, lactate, or other small molecules.
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0006094 The formation of glucose from noncarbohydrate precursors, such as pyruvate, amino acids and glycerol.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

20 records
Show feature table
Start End DB Term Name
17 355 Pfam PF01116 Fructose-bisphosphate aldolase class-II
17 355 InterPro IPR000771 Fructose-bisphosphate aldolase, class-II
3 358 PANTHER PTHR30559 FRUCTOSE-BISPHOSPHATE ALDOLASE CLASS 2
3 358 InterPro IPR006411 Fructose-bisphosphate aldolase, class II, yeast/E. coli subtype
4 358 NCBIfam TIGR01520 class II fructose-bisphosphate aldolase
4 358 InterPro IPR006411 Fructose-bisphosphate aldolase, class II, yeast/E. coli subtype
172 183 ProSitePatterns PS00806 Fructose-bisphosphate aldolase class-II signature 2.
172 183 InterPro IPR000771 Fructose-bisphosphate aldolase, class-II
13 359 PIRSF PIRSF001359 F_bP_aldolase_II
13 359 InterPro IPR000771 Fructose-bisphosphate aldolase, class-II
4 357 SUPERFAMILY SSF51569 Aldolase
2 359 FunFam G3DSA:3.20.20.70:FF:000013 Class II fructose-bisphosphate aldolase
15 359 CDD cd00946 FBP_aldolase_IIA
15 359 InterPro IPR006411 Fructose-bisphosphate aldolase, class II, yeast/E. coli subtype
14 357 NCBIfam TIGR00167 ketose-bisphosphate aldolase
14 357 InterPro IPR000771 Fructose-bisphosphate aldolase, class-II
101 112 ProSitePatterns PS00602 Fructose-bisphosphate aldolase class-II signature 1.
101 112 InterPro IPR000771 Fructose-bisphosphate aldolase, class-II
2 359 Gene3D G3DSA:3.20.20.70 Aldolase class I
2 359 InterPro IPR013785 Aldolase-type TIM barrel

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
0.256
Show in viewer
Surrounding area
Pocket 2 P2Rank #2
0.219
Show in viewer
Surrounding area
Pocket 3 P2Rank #3
0.179
Likely same site as FPocket 1 1.4 Å 14 shared residues 100% of smaller site
Show in viewer
Surrounding area
Pocket 4 P2Rank #4
0.107
Show in viewer
Surrounding area
Pocket 5 P2Rank #5
0.064
Show in viewer
Surrounding area

Binding pockets · FPocket

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

Pocket 1 FPocket #1
0.48 Unusual size
Likely same site as P2Rank 3 1.4 Å 14 shared residues 100% of smaller site
Show in viewer
Surrounding area
Residue sets
UniProt: Active site:110-110 Proton donor
UniProt: Binding site:111-111
UniProt: Binding site:145-145
UniProt: Binding site:175-175
UniProt: Binding site:227-227
UniProt: Binding site:228-228
UniProt: Binding site:265-265
UniProt: Binding site:266-268
UniProt: Binding site:287-290
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_A0A0H3GV85
AlphaFold DB full sequence Viewing
ColabFold VK055_4128
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.

120 records
Chemistry signal

Structural and bioactivity evidence are both available for this target.

Direct evidence 0 same-protein records
Transferred evidence 70 records from similar proteins
Structural ligands 8 0 loaded crystals
Measured bioactivity 62 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
13P PDB via homolog 170.1 Da · LogP -1.34 · TPSA 104.1 Open detail RCSB PDB
2FP PDB via homolog Detail RCSB PDB
8HC PDB via homolog Detail RCSB PDB
FLC PDB via homolog Detail RCSB PDB
G3P 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
13P RCSB PDB P0AB71 170.1 Da LogP -1.34 TPSA 104.1 ✓ Ro5 ✓ Clean C(C(=O)COP(=O)(O)O)O
2FP RCSB PDB P9WQA3 340.1 Da LogP -3.14 TPSA 211.3 1 viol. ✓ Clean C([C@H]([C@@H]([C@H](C(=O)COP(=O)(O)O)O)O)O)OP(…
8HC RCSB PDB P9WQA3 189.2 Da LogP 1.64 TPSA 70.4 ✓ Ro5 ✓ Clean c1cc2ccc(nc2c(c1)O)C(=O)O
FLC RCSB PDB W8TRN9 189.1 Da LogP -5.25 TPSA 140.6 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O
G3P RCSB PDB P9WQA3 172.1 Da LogP -1.55 TPSA 107.2 ✓ Ro5 ✓ Clean C([C@H](COP(=O)(O)O)O)O
GOS RCSB PDB P0AB71 342.1 Da LogP -3.35 TPSA 214.4 1 viol. ✓ Clean C([C@H]([C@H]([C@@H]([C@H](COP(=O)(O)O)O)O)O)O)…
MLT RCSB PDB Q6TV43 134.1 Da LogP -1.09 TPSA 94.8 ✓ Ro5 ✓ Clean C([C@H](C(=O)O)O)C(=O)O
NH4 RCSB PDB P0AB71 18.0 Da LogP 0.38 TPSA 36.5 ✓ Ro5 ✓ Clean [NH4+]

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 PGH ChEMBL TD4 ChEMBL CHEMBL1982521 ChEMBL PH4 ChEMBL CHEMBL1464738 ChEMBL CHEMBL1278086 ChEMBL CHEMBL1236227 ChEMBL CHEMBL1276292 ChEMBL CHEMBL1429930 ChEMBL CHEMBL1709293 ChEMBL CHEMBL1608811 ChEMBL CHEMBL1330204 ChEMBL CHEMBL1982831 ChEMBL CHEMBL1417696 ChEMBL CHEMBL1417974 ChEMBL CHEMBL1876674 ChEMBL CHEMBL1566050 ChEMBL CHEMBL2131581 ChEMBL CHEMBL1471458 ChEMBL CHEMBL2356597 ChEMBL CHEMBL1403575 ChEMBL CHEMBL1278173 ChEMBL CHEMBL1468728 ChEMBL CHEMBL1409396 ChEMBL CHEMBL1305695 ChEMBL CHEMBL1416316 ChEMBL CHEMBL1534514 ChEMBL CHEMBL1550806 ChEMBL CHEMBL1322235 ChEMBL CHEMBL1548989 ChEMBL CHEMBL1573047 ChEMBL CHEMBL1605711 ChEMBL CHEMBL611941 ChEMBL CHEMBL1366544 ChEMBL CHEMBL1460744 ChEMBL CHEMBL1300133 ChEMBL CHEMBL1331202 ChEMBL CHEMBL1346018 ChEMBL CHEMBL1364365 ChEMBL CHEMBL1389755 ChEMBL CHEMBL1391949 ChEMBL CHEMBL1419606 ChEMBL CHEMBL1431182 ChEMBL CHEMBL1431253 ChEMBL CHEMBL1431614 ChEMBL CHEMBL1452334 ChEMBL CHEMBL1459393 ChEMBL CHEMBL1468514 ChEMBL CHEMBL1492872 ChEMBL CHEMBL1517767 ChEMBL CHEMBL1530673 ChEMBL CHEMBL1566758 ChEMBL CHEMBL1595595 ChEMBL CHEMBL1608557 ChEMBL CHEMBL1895454 ChEMBL CHEMBL2144387 ChEMBL CHEMBL303846 ChEMBL CHEMBL3207326 ChEMBL CHEMBL3210814 ChEMBL CHEMBL3211355 ChEMBL CHEMBL443510 ChEMBL FCN