KpKP13 Protein target profile

NADH-quinone oxidoreductase subunit C/D

Accession: KP13_00991

Gene: AHE43479.1 nuoC 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GWB2
Length 602
Pocket druggability (P2Rank · AlphaFold DB model) 0.562
Direct ligand evidence 0 66 total records
Functional annotation 1 EC 8 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 (%)
44.531 Lower values reduce human off-target concern.
Human E-value
2.06e-32
Gut microbiome similarity
2.8% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Structure confidence

ColabFold pLDDT
95.79 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) 0.562
Structure A0A0H3GWB2
Pocket Pocket 1
Druggability (FPocket) 0.836
Structure A0A0H3GWB2
Pocket Pocket 8
ColabFold model
P2Rank 0.377 · Pocket 1
FPocket 0.581 · Pocket 13
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 134 / 4744 genomes with a hit
Prevalence 2.8%

Sequence

Primary amino-acid sequence viewer.

MVNNMTDLTAHDAAPAWQTRDHLDDPVIGELRNRFGPDAFTVQPTRTGVPVVWVKREQLLEVGDFLKKLPKPYVMLFDLHGMDERLRTHRDGLPAADFSVFYHLISIDRNRDIMLKVALSENDLHLPTFTKLFPNANWYERETWEMFGITFDGHPNLRRIMMPPTWEGHPLRKDYPARATEFDPFELTKAKQDLEMEALTFKPEEWGMKRGTDNEDFMFLNLGPNHPSAHGAFRIILQLDGEEIVDCVPDIGYHHRGAEKMGERQSWHSYIPYTDRIEYLGGCVNEMPYVLAVEKLAGITVPDRVNVIRVMLSELFRINSHLLYISTFIQDVGAMTPVFFAFTDRQKIYDLVEAITGFRMHPAWFRIGGVAHDLPRGWDRLLREFLEWMPKRLDSYEKAALRNTILKGRSVGVAAYTAKEALEWGTTGAGLRATGIDFDVRKWRPYSGYENFDFEVPTGGGVSDCYTRVMLKVEELRQSLRILQQCLDNMPEGPFKADHPLTTPPPKERTLQHIETLITHFLQVSWGPVMPANESFQMIEATKGINSYYLTSDGSTMSYRTRVRTPSFAHLQQIPSAIRGSLVSDLIVYLGSIDFVMSDVDR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 8 GO

Subcellular localization

Localization
Cytoplasmic

Enzyme Commission (EC)

1

Gene Ontology (GO)

8
  • GO:0008137 Catalysis of the reaction: NADH + ubiquinone + 5 H+(in) = NAD+ + ubiquinol + 4 H+(out).
  • GO:0030964 An integral membrane complex that possesses NADH oxidoreductase activity. The complex is one of the components of the electron transport chain. It catalyzes the transfer of a pair of electrons from NADH to a quinone.
  • GO:0050136 Catalysis of the reaction: NADH + H+ + a quinone = NAD+ + a quinol.
  • GO:0051287 Binding to nicotinamide adenine dinucleotide, a coenzyme involved in many redox and biosynthetic reactions; binding may be to either the oxidized form, NAD+, or the reduced form, NADH.
  • GO:0016651 Catalysis of an oxidation-reduction (redox) reaction in which NADH or NADPH acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
  • GO:0048038 Binding to a quinone, any member of a class of diketones derivable from aromatic compounds by conversion of two CH groups into CO groups with any necessary rearrangement of double bonds.
  • 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:0022904 A process in which a series of electron carriers operate together to transfer electrons from donors such as NADH and FADH2 to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

30 records
Show feature table
Start End DB Term Name
6 159 FunFam G3DSA:3.30.460.80:FF:000001 NADH-quinone oxidoreductase subunit C/D
217 602 Gene3D G3DSA:1.10.645.10 -
217 602 InterPro IPR029014 [NiFe]-hydrogenase, large subunit
27 231 SUPERFAMILY SSF143243 Nqo5-like
27 231 InterPro IPR037232 NADH:ubiquinone oxidoreductase, 30kDa subunit superfamily
227 602 SUPERFAMILY SSF56762 HydB/Nqo4-like
227 602 InterPro IPR029014 [NiFe]-hydrogenase, large subunit
331 602 Pfam PF00346 Respiratory-chain NADH dehydrogenase, 49 Kd subunit
331 602 InterPro IPR001135 NADH-quinone oxidoreductase, subunit D
6 159 Gene3D G3DSA:3.30.460.80 NADH:ubiquinone oxidoreductase, 30kDa subunit
6 159 InterPro IPR037232 NADH:ubiquinone oxidoreductase, 30kDa subunit superfamily
27 191 Hamap MF_01357 NAD(P)H-quinone oxidoreductase subunit J, chloroplastic [ndhJ].
27 191 InterPro IPR010218 NADH dehydrogenase, subunit C
51 178 NCBIfam TIGR01961 NADH (or F420H2) dehydrogenase, subunit C
51 178 InterPro IPR010218 NADH dehydrogenase, subunit C
18 602 Hamap MF_01359 NADH-quinone oxidoreductase subunit C/D [nuoC].
18 602 InterPro IPR023062 NADH dehydrogenase, subunit CD
212 602 PANTHER PTHR11993 NADH-UBIQUINONE OXIDOREDUCTASE 49 KDA SUBUNIT
212 602 InterPro IPR022885 NAD(P)H-quinone oxidoreductase subunit D/H
213 602 Hamap MF_01358 NAD(P)H-quinone oxidoreductase subunit H, chloroplastic [ndhH].
213 602 InterPro IPR022885 NAD(P)H-quinone oxidoreductase subunit D/H
52 179 Pfam PF00329 Respiratory-chain NADH dehydrogenase, 30 Kd subunit
52 179 InterPro IPR001268 NADH:ubiquinone oxidoreductase, 30kDa subunit
140 161 ProSitePatterns PS00542 Respiratory chain NADH dehydrogenase 30 Kd subunit signature.
140 161 InterPro IPR020396 NADH:ubiquinone oxidoreductase, 30kDa subunit, conserved site
254 265 ProSitePatterns PS00535 Respiratory chain NADH dehydrogenase 49 Kd subunit signature.
254 265 InterPro IPR014029 NADH:ubiquinone oxidoreductase, 49kDa subunit, conserved site
217 602 FunFam G3DSA:1.10.645.10:FF:000001 NADH-quinone oxidoreductase subunit C/D
217 602 NCBIfam TIGR01962 NADH dehydrogenase (quinone) subunit D
217 602 InterPro IPR022885 NAD(P)H-quinone oxidoreductase subunit D/H

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
0.562
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Surrounding area
Pocket 2 P2Rank #2
0.398
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Surrounding area
Pocket 3 P2Rank #3
0.385
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Surrounding area
Pocket 4 P2Rank #4
0.341
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Surrounding area
Pocket 5 P2Rank #5
0.177
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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 #8
0.836
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Surrounding area
Pocket 2 FPocket #26
0.374 Unusual size
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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_A0A0H3GWB2
AlphaFold DB full sequence Viewing
ColabFold KP13_00991
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.

66 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 16 records from similar proteins
Structural ligands 16 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
3PE PDB via homolog 748.1 Da · LogP 12.06 · TPSA 134.4 Open detail RCSB PDB
CDL PDB via homolog Detail RCSB PDB
DCQ PDB via homolog Detail RCSB PDB
EHZ PDB via homolog Detail RCSB PDB
FES 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
3PE RCSB PDB A0A6P3DZ89 748.1 Da LogP 12.06 TPSA 134.4 2 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN)OC…
CDL RCSB PDB W5PJ73 1464.1 Da LogP 23.31 TPSA 242.6 3 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)([O-])OCC(…
DCQ RCSB PDB Q56220 322.4 Da LogP 4.49 TPSA 52.6 ✓ Ro5 Alert CCCCCCCCCCC1=C(C(=O)C(=C(C1=O)OC)OC)C
EHZ RCSB PDB Q91WD5 584.7 Da LogP 3.04 TPSA 182.5 2 viol. ✓ Clean CCCCCCCCCCC[C@@H](CC(=O)SCCNC(=O)CCNC(=O)[C@@H]…
FES RCSB PDB W5PJ73 175.8 Da LogP 1.29 TPSA 0.0 ✓ Ro5 ✓ Clean S1[Fe]S[Fe]1
HQH RCSB PDB Q56220 415.6 Da LogP 5.05 TPSA 71.6 1 viol. ✓ Clean C/C=C(\C)/[C@@H]([C@H](C)/C=C(\C)/C=C/C/C(=C/CC…
HQK RCSB PDB Q56220 364.9 Da LogP 5.24 TPSA 34.9 1 viol. ✓ Clean CC(C)(C)c1ccc(cc1)CSC2=C(C(=O)N(N=C2)C(C)(C)C)Cl
HQW RCSB PDB Q56220 397.4 Da LogP 4.66 TPSA 91.8 ✓ Ro5 ✓ Clean CC1=C(OC(=C(C1=O)C)OC)[C@H]2C/C(=C/C(=C/c3ccc(c…
MYR RCSB PDB A0A6P3DZ89 228.4 Da LogP 4.77 TPSA 37.3 ✓ Ro5 ✓ Clean CCCCCCCCCCCCCC(=O)O
PC1 RCSB PDB W5PJ73 790.2 Da LogP 12.17 TPSA 111.2 2 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](CO[P@@](=O)([O-])…
PEE RCSB PDB F1S1A8 744.0 Da LogP 11.61 TPSA 134.4 2 viol. ✓ Clean CCCCCCCC/C=C\CCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN…
PLX RCSB PDB F1S1A8 767.1 Da LogP 11.61 TPSA 114.7 2 viol. ✓ Clean CCCCCCCCCCCCCCCCC[C@@H](O)O[C@H](CO[C@@H](CCCCC…
PNS RCSB PDB W5PJ73 358.4 Da LogP -0.96 TPSA 145.2 1 viol. ✓ Clean CC(C)(COP(=O)(O)O)[C@H](C(=O)NCCC(=O)NCCS)O
SMA RCSB PDB Q56220 514.7 Da LogP 6.14 TPSA 87.4 2 viol. ✓ Clean C/C=C(\C)/C=C/C=C[C@@H]([C@@H](C)[C@H]([C@@H](C…
UQ1 RCSB PDB Q56220 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
ZMP RCSB PDB F1S1A8 568.7 Da LogP 4.07 TPSA 162.3 1 viol. ✓ Clean CCCCCCCCCCCCCC(=O)SCCNC(=O)CCNC(=O)[C@H](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.

Cross-references

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