Protein target profile

KP13_00988

NADH-quinone oxidoreductase subunit G

Genome: KpKP13 Gene: nuoG AHE43482.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GT22
Length 859
Pocket druggability 0.592
Direct ligand evidence 0 73 total records
Functional annotation 1 EC 11 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 (%)
24.921 Lower values reduce human off-target concern.
Human E-value
4.23e-46
Gut microbiome similarity
2.8% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

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

Localization

Localization
Cytoplasmic

Structure confidence

ColabFold pLDDT
97.1 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket 0.592
Structure A0A0H3GT22
Pocket Pocket 11
P2Rank 0.278
Structure A0A0H3GT22
Pocket Pocket 1
ColabFold model
FPocket 0.738 · Pocket 4
P2Rank 0.534 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 131 / 4744 genomes with a hit
Prevalence 2.8%

Cross-references

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

Sequence

Primary amino-acid sequence viewer.

MKQYQNAEDTRGRLVMSCMTPASDGTFISIDDSEAKQFRESVVEWLMTNHPHDCPVCEEGGNCHLQDMTVMTGHSFRRYRFTKRTHRNQDLGPFISHEMNRCIACYRCVRYYKDYADGTDLGVYGAHDNVYFGRPEDGTLESEFSGNLVEVCPTGVFTDKTHSERYNRKWDMQFAPSICQQCSIGCNISPGERYGELRRIENRYNGTVNRYFLCDRGRFGYGYVNLKDRPRQPVQRRGDDLITLNAEQAMQGAADILRQSKKVIGIGSPRASIESNFALRELVGADNFYTGIAKGEQARLQMMLKVLREGGIHTPSLRDIESYDAVLVLGEDITQTGARVALAVRQAVKGKAREMAAAQKVADWQIAAILNIGQRAKHPLFVTNVDDTRLDDIAAWTYRAPVEDQARLGFAIAHALDDSAPAVDGLSQDLQGKVDVIVQALAGAKKPLIISGTNAGSMEIIQAAANVAKALKGRGADVGVTMVARAVNSVGLGMIGGGSLEEALDELESGAADAVIVLENDLHRHASAARVDAALAKAPLVMVVDHQRTAIMDKAHLVLSAASFAESDGTVVNNEGRAQRFFQVYDPAYYDAKTVMLESWRWLHSLHSTVNNRQVDWTQLDHVIDAAIAALPQLAGIKDAAPDATFRIRGQKLAREPHRYSGRTAMRANISVHEPRQPQDKDTMFAFSMEGNNQPSAPRSQIPFAWAPGWNSPQAWNKFQDEVGGKLRHGDPGVRLFEASASGLEYFTAVPASFQAEEGKWRIAPYYHLFGSDELSQRAPVFQSRMPEPYIKLNPADAAKLGVNPGAMLSFSVEGQTLRLPLVISEGLTAGQVGLPMGMPGIAPVLTGSRIDSLQEAKA

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 11 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

11
  • GO:0008137 Catalysis of the reaction: NADH + ubiquinone + 5 H+(in) = NAD+ + ubiquinol + 4 H+(out).
  • 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:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0042773 The transfer of electrons through a series of electron donors and acceptors, generating energy that is ultimately used for synthesis of ATP.
  • GO:0051536 Binding to an iron-sulfur cluster, a combination of iron and sulfur atoms.
  • 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:0051537 Binding to a 2 iron, 2 sulfur (2Fe-2S) cluster; this cluster consists of two iron atoms, with two inorganic sulfur atoms found between the irons and acting as bridging ligands.
  • 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:0046872 Binding to a metal ion.
  • GO:0003954 Catalysis of the reaction: NADH + H+ + acceptor = NAD+ + reduced 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.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

35 records
Show feature table
Start End DB Term Name
101 111 ProSitePatterns PS00643 Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 3.
101 111 InterPro IPR000283 NADH:ubiquinone oxidoreductase, 75kDa subunit, conserved site
6 78 Gene3D G3DSA:3.10.20.740 -
172 226 FunFam G3DSA:2.20.25.90:FF:000003 NADH-quinone oxidoreductase
459 642 FunFam G3DSA:3.40.50.740:FF:000006 NADH-quinone oxidoreductase
54 66 ProSitePatterns PS00642 Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 2.
54 66 InterPro IPR000283 NADH:ubiquinone oxidoreductase, 75kDa subunit, conserved site
31 849 PANTHER PTHR43105 RESPIRATORY NITRATE REDUCTASE
761 844 CDD cd02788 MopB_CT_NDH-1_NuoG2-N7
762 855 FunFam G3DSA:2.40.40.20:FF:000014 NADH-quinone oxidoreductase
170 639 SUPERFAMILY SSF53706 Formate dehydrogenase/DMSO reductase, domains 1-3
448 641 Gene3D G3DSA:3.40.50.740 -
39 75 Pfam PF10588 NADH-ubiquinone oxidoreductase-G iron-sulfur binding region
39 75 InterPro IPR019574 NADH:ubiquinone oxidoreductase, subunit G, iron-sulphur binding
176 648 CDD cd02771 MopB_NDH-1_NuoG2-N7
172 228 ProSiteProfiles PS51669 Prokaryotic molybdopterin oxidoreductases 4Fe-4S domain profile.
172 228 InterPro IPR006963 Molybdopterin oxidoreductase, 4Fe-4S domain
505 589 Pfam PF00384 Molybdopterin oxidoreductase
505 589 InterPro IPR006656 Molybdopterin oxidoreductase
39 79 SMART SM00929 NADH_G_4Fe_4S_3_2
39 79 InterPro IPR019574 NADH:ubiquinone oxidoreductase, subunit G, iron-sulphur binding
765 853 SUPERFAMILY SSF50692 ADC-like
765 853 InterPro IPR009010 Aspartate decarboxylase-like domain superfamily
32 164 SUPERFAMILY SSF54862 4Fe-4S ferredoxins
34 73 ProSiteProfiles PS51839 His(Cys)3-ligated-type [4Fe-4S] domain profile.
34 73 InterPro IPR019574 NADH:ubiquinone oxidoreductase, subunit G, iron-sulphur binding
172 226 SMART SM00926 Molybdop_Fe4S4_2
172 226 InterPro IPR006963 Molybdopterin oxidoreductase, 4Fe-4S domain
761 858 Gene3D G3DSA:2.40.40.20 -
172 225 Pfam PF04879 Molybdopterin oxidoreductase Fe4S4 domain
172 225 InterPro IPR006963 Molybdopterin oxidoreductase, 4Fe-4S domain
163 274 Gene3D G3DSA:3.30.200.210 -
11 606 NCBIfam TIGR01973 NADH-quinone oxidoreductase subunit NuoG
11 606 InterPro IPR010228 NADH:ubiquinone oxidoreductase, subunit G
163 275 FunFam G3DSA:3.30.200.210:FF:000004 NADH-quinone oxidoreductase

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

Loading 3D structure...

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 · FPocket

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

Site 1 FPocket #11
0.592
Show in viewer
Surrounding area
Site 2 FPocket #4
0.513
Show in viewer
Surrounding area
Site 3 FPocket #49
0.496
Show in viewer
Surrounding area
Site 4 FPocket #15
0.329
Show in viewer
Surrounding area

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.278
Show in viewer
Surrounding area
Site 2 P2Rank #2
0.274
Show in viewer
Surrounding area
Site 3 P2Rank #3
0.231
Show in viewer
Surrounding area
Site 4 P2Rank #4
0.222
Show in viewer
Surrounding area
Site 5 P2Rank #5
0.156
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_A0A0H3GT22
AlphaFold DB full sequence Viewing
ColabFold KP13_00988
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.

73 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 23 records from similar proteins
Structural ligands 23 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
8Q1 PDB via homolog Detail RCSB PDB
CDL PDB via homolog Detail RCSB PDB
CPL PDB via homolog Detail RCSB PDB
DCQ 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 F2Z6F1 748.1 Da LogP 12.06 TPSA 134.4 2 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN)OC…
8Q1 RCSB PDB P28331 540.7 Da LogP 3.29 TPSA 162.3 1 viol. ✓ Clean CCCCCCCCCCCC(=O)SCCNC(=O)CCNC(=O)[C@@H](C(C)(C)…
CDL RCSB PDB Q9UUU3 1464.1 Da LogP 23.31 TPSA 242.6 3 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)([O-])OCC(…
CPL RCSB PDB F2Z6F1 758.1 Da LogP 10.94 TPSA 111.2 2 viol. ✓ Clean CCCCCCCCCCCCCCCC(=O)OC[C@H](CO[P@@](=O)([O-])OC…
DCQ RCSB PDB Q56223 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 F2Z6F1 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 Q56223 175.8 Da LogP 1.29 TPSA 0.0 ✓ Ro5 ✓ Clean S1[Fe]S[Fe]1
HQH RCSB PDB Q56223 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 Q56223 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 Q56223 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…
LMN RCSB PDB F2Z6F1 1005.2 Da LogP -1.68 TPSA 357.1 3 viol. ✓ Clean CCCCCCCCCCC(CCCCCCCCCC)(CO[C@@H]1[C@@H]([C@@H](…
LMT RCSB PDB F2Z6F1 510.6 Da LogP -0.45 TPSA 178.5 3 viol. ✓ Clean CCCCCCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1…
PC1 RCSB PDB P15690 790.2 Da LogP 12.17 TPSA 111.2 2 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](CO[P@@](=O)([O-])…
PEE RCSB PDB P28331 744.0 Da LogP 11.61 TPSA 134.4 2 viol. ✓ Clean CCCCCCCC/C=C\CCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN…
PLC RCSB PDB F2Z6F1 622.8 Da LogP 8.12 TPSA 108.4 2 viol. ✓ Clean CCCCCCCCCCCC(=O)OC[C@H](CO[P@](=O)(O)OCC[N+](C)…
PLX RCSB PDB P28331 767.1 Da LogP 11.61 TPSA 114.7 2 viol. ✓ Clean CCCCCCCCCCCCCCCCC[C@@H](O)O[C@H](CO[C@@H](CCCCC…
PSC RCSB PDB F2Z6F1 759.1 Da LogP 11.58 TPSA 108.4 2 viol. ✓ Clean CCCCCCCCCCCCCCCC(=O)OC[C@H](CO[P@@](=O)(O)OCC[N…
SMA RCSB PDB Q56223 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…
T7X RCSB PDB F2Z6F1 887.1 Da LogP 9.17 TPSA 209.5 4 viol. ✓ Clean CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)OC1[C@@…
UQ1 RCSB PDB Q56223 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
UQ2 RCSB PDB P15690 318.4 Da LogP 4.04 TPSA 52.6 ✓ Ro5 Alert CC1=C(C(=O)C(=C(C1=O)OC)OC)C\C=C(/C)\CCC=C(C)C
UQ9 RCSB PDB F2Z6F1 795.2 Da LogP 16.13 TPSA 52.6 2 viol. Alert CC1=C(C(=O)C(=C(C1=O)OC)OC)C\C=C(/C)\CC\C=C(/C)…
ZMP RCSB PDB F2Z6F1 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.