KpKP13 Protein target profile

Formate dehydrogenase, nitrate-inducible, iron-sulfur subunit

Accession: KP13_04527

Gene: AHE44403.1 fdnH 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A377TTA5
Length 230
Pocket druggability (P2Rank · AlphaFold DB model) 0.78
Direct ligand evidence 0 64 total records
Functional annotation 0 EC 9 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
3.2% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
95.08 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) 0.78
Structure A0A377TTA5
Pocket Pocket 1
Druggability (FPocket) 0.486
Structure A0A377TTA5
Pocket Pocket 12
ColabFold model
P2Rank 0.692 · Pocket 1
FPocket 0.118 · Pocket 15
Core conservation Accessory gene
Roary core
CoreCruncher accessory
Gut microbiome 151 / 4744 genomes with a hit
Prevalence 3.2%

Sequence

Primary amino-acid sequence viewer.

MYDNPADLSAKSWTVMRFSETEQNGKLEWLIRKDGCMHCAEPGCLKACPSAGAIIQYANGIVDFQQENCIGCGYCIAGCPFNVPRLNKEDNRVYKCTLCVDRVSVGQEPACVKTCPTGAIHFGTKKEMLEVAEERVAKLKKRGYANAGIYNPPGVGGTHVMYVLHHADQPELYHKLPKKPQIDTSISLWKGALKPLAAAGFIATFAGLIYHYIGIGPNKEVDDDEEKHDE

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

9 GO

Subcellular localization

Localization
CytoplasmicMembrane

Gene Ontology (GO)

9
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0015944 The chemical reactions and pathways by which formate is converted to CO2.
  • GO:0045333 The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which either requires oxygen (aerobic respiration) or does not (anaerobic respiration).
  • GO:0051539 Binding to a 4 iron, 4 sulfur (4Fe-4S) cluster; this cluster consists of four iron atoms, with the inorganic sulfur atoms found between the irons and acting as bridging ligands.
  • GO:0009326 An enzyme complex that catalyzes the dehydrogenation of formate to produce carbon dioxide (CO2).
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
  • GO:0036397 Catalysis of the reaction: formate + a quinone = CO2 + a quinol.
  • GO:0046872 Binding to a metal ion.
  • GO:0009061 The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which uses compounds other than oxygen (e.g. nitrate, sulfate) as the terminal electron acceptor.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

24 records
Show feature table
Start End DB Term Name
60 89 ProSiteProfiles PS51379 4Fe-4S ferredoxin-type iron-sulfur binding domain profile.
60 89 InterPro IPR017896 4Fe-4S ferredoxin-type, iron-sulphur binding domain
2 227 PANTHER PTHR43545 FORMATE DEHYDROGENASE, NITRATE-INDUCIBLE, IRON-SULFUR SUBUNIT
69 80 ProSitePatterns PS00198 4Fe-4S ferredoxin-type iron-sulfur binding region signature.
69 80 InterPro IPR017900 4Fe-4S ferredoxin, iron-sulphur binding, conserved site
38 97 Gene3D G3DSA:3.30.70.20 -
2 152 Gene3D G3DSA:3.30.70.20 -
214 230 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
1 226 NCBIfam TIGR01582 formate dehydrogenase subunit beta
1 226 InterPro IPR006470 Formate dehydrogenase iron-sulphur subunit, Proteobacteria
12 198 SUPERFAMILY SSF54862 4Fe-4S ferredoxins
184 230 FunFam G3DSA:1.20.5.480:FF:000001 Formate dehydrogenase iron-sulfur subunit
28 124 Pfam PF13247 4Fe-4S dicluster domain
28 124 InterPro IPR017896 4Fe-4S ferredoxin-type, iron-sulphur binding domain
1 195 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
183 230 Gene3D G3DSA:1.20.5.480 Single helix bin
183 230 InterPro IPR038384 Formate dehydrogenase, C-terminal domain superfamily
182 225 Pfam PF09163 Formate dehydrogenase N, transmembrane
182 225 InterPro IPR015246 Formate dehydrogenase, transmembrane
27 59 ProSiteProfiles PS51379 4Fe-4S ferredoxin-type iron-sulfur binding domain profile.
27 59 InterPro IPR017896 4Fe-4S ferredoxin-type, iron-sulphur binding domain
196 213 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 174 CDD cd10558 FDH-N
1 174 InterPro IPR006470 Formate dehydrogenase iron-sulphur subunit, Proteobacteria

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
0.78
Likely same site as FPocket 12 4.6 Å 25 shared residues 86% of smaller site
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Surrounding area
Pocket 2 P2Rank #2
0.219
Likely same site as FPocket 12 6.3 Å 11 shared residues 100% of smaller site
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Surrounding area
Pocket 3 P2Rank #3
0.124
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Surrounding area
Pocket 4 P2Rank #4
0.051
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Surrounding area
Pocket 5 P2Rank #5
0.029
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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 #12
0.486 Unusual size
Likely same site as P2Rank 1 4.6 Å 25 shared residues 86% 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_A0A377TTA5
AlphaFold DB full sequence Viewing
ColabFold KP13_04527
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.

64 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 14 records from similar proteins
Structural ligands 14 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
2MD PDB via homolog 742.6 Da · LogP -2.53 · TPSA 346.6 Open detail RCSB PDB
3PH PDB via homolog Detail RCSB PDB
6MO PDB via homolog Detail RCSB PDB
AGA PDB via homolog Detail RCSB PDB
BSY 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
2MD RCSB PDB Q8GC87 742.6 Da LogP -2.53 TPSA 346.6 3 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@@](=…
3PH RCSB PDB P11349 705.0 Da LogP 12.07 TPSA 119.4 2 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)O)OC(=O…
6MO RCSB PDB P0AAJ3 95.9 Da LogP -0.00 TPSA 0.0 ✓ Ro5 ✓ Clean [Mo+6]
AGA RCSB PDB P11349 455.5 Da LogP 1.85 TPSA 151.7 ✓ Ro5 ✓ Clean CCCCCCCC(=O)O[C@H](COC(=O)CCCC)COP(=O)([O-])OC[…
BSY RCSB PDB G8QM54 128.0 Da LogP -2.25 TPSA 60.4 ✓ Ro5 ✓ Clean O[Se](=O)[O-]
CDL RCSB PDB P0AAJ3 1464.1 Da LogP 23.31 TPSA 242.6 3 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)([O-])OCC(…
F3S RCSB PDB D0MDD5 295.8 Da LogP 2.59 TPSA 0.0 ✓ Ro5 ✓ Clean S1[Fe]2S[Fe]3[S]2[Fe]1S3
H2S RCSB PDB Q72EJ0 34.1 Da LogP 0.11 TPSA 0.0 ✓ Ro5 ✓ Clean S
HQO RCSB PDB P0AAJ3 259.3 Da LogP 3.69 TPSA 47.2 ✓ Ro5 Alert CCCCCCCc1cc(c2ccccc2[n+]1[O-])O
MD1 RCSB PDB P11349 740.6 Da LogP -2.13 TPSA 358.0 3 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=O…
MGD RCSB PDB P0AAJ3 740.6 Da LogP -2.06 TPSA 346.6 3 viol. ✓ Clean c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@@](=…
MO RCSB PDB P11349 95.9 Da LogP -0.00 TPSA 0.0 ✓ Ro5 ✓ Clean [Mo]
PCI RCSB PDB P11349 266.3 Da LogP 4.66 TPSA 20.2 ✓ Ro5 ✓ Clean c1(c(c(c(c(c1Cl)Cl)Cl)Cl)Cl)O
W RCSB PDB Q72EJ0 183.8 Da LogP -0.00 TPSA 0.0 ✓ Ro5 ✓ Clean [W+6]

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.