Protein profile

VK055_4837

NADH:ubiquinone oxidoreductase, membrane subunitA

Genome: KpATCC43816

Gene: nuoA AIK83364.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GT27

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Amino acids 119

Annotations 5

Features 14

PDB binders 23

Druggability 0.692

Overview

Basic information about this protein and its source genome.

Accession: VK055_4837
Assembly: Klebsiella pneumoniae subsp. pneumoniae strain ATCC 43816 KPPR1, complete genome
Gene: nuoA AIK83364.1
Status: annotated
Amino acids: 119
Structure source: AlphaFold + ColabFold

7.1.1.-

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:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. 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.

Target profile

Computed evidence for target prioritization.

Human off-target: hit
Human identity (%): 48.649
Human E-value: 1.22e-06
Gut microbiome off-target: hit
Essential (DEG): Y
DEG identity (%): 58.252
DEG E-value: 2.7900000000000003e-37
Localization: CytoplasmicMembrane
ColabFold pLDDT: 81.71

Selected Druggability evidence

AlphaFold / UniProt model

Selected Druggability is the FPocket score chosen for ranking using the curated structure priority. The 3D viewer may show a different loaded structure, so its visible pockets can differ.

FPocket 0.692

Structure A0A0H3GT27

Pocket Pocket 2

P2Rank

Structure A0A0H3GT27

Pocket No pockets

ColabFold model

FPocket 0.285 · Pocket 2

Core conservation Accessory gene

Roary core

CoreCruncher accessory

Gut microbiome 133 / 4744 genomes with a hit

Normalized 0.028

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 4 GO

Enzyme Commission (EC)

7.1.1.-

Gene Ontology (GO)

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:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
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 Features

Domain/signature hits from InterPro and related databases.

14 records

Show feature table

Start	End	DB	Term	Name
1	97	FunFam	G3DSA:1.20.58.1610:FF:000003	NADH-quinone oxidoreductase subunit A
94	119	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
60	70	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
39	59	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
3	96	Pfam	PF00507	NADH-ubiquinone/plastoquinone oxidoreductase, chain 3
3	96	InterPro	IPR000440	NADH:ubiquinone/plastoquinone oxidoreductase, chain 3
3	97	PANTHER	PTHR11058	NADH-UBIQUINONE OXIDOREDUCTASE CHAIN 3
3	97	InterPro	IPR000440	NADH:ubiquinone/plastoquinone oxidoreductase, chain 3
1	97	Gene3D	G3DSA:1.20.58.1610	NADH:ubiquinone/plastoquinone oxidoreductase, chain 3
1	97	InterPro	IPR038430	NADH:ubiquinone oxidoreductase, subunit 3 superfamily
71	93	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
39	61	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
1	38	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
71	93	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.

3D Structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; predicted models typically cover the full protein.

Loading 3D structure...

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Structural evidence

0 + 2

Experimental PDB entries and predicted models. Click Switch to display a different structure in the viewer.

Entry	Method	Resolution	Chain	Coverage	Links	Status
AlphaFold AF_A0A0H3GT27	AlphaFold	—	—	full sequence	—	Viewing
ColabFold VK055_4837	ColabFold	—	—	full sequence	—	Loaded

Pocket details FPocket · P2Rank — toggle visibility and zoom from here, or open full viewer

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET	Sticks	Spheres	Surfaces	Druggability	Labels	Zoom	Positions
2				0.692

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET	Sticks	Spheres	Surfaces	Druggability	Labels	Zoom	Positions
2				0.285

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

Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in TPW, use Open crystal to inspect it in the structure viewer.

No PDB structure with a co-crystallized ligand found for this exact protein.

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.

Ligand	Source crystal	UniProt (homolog)	MW · LogP · TPSA	Lipinski	PAINS	SMILES
3PE	6G2J	P03899	748.1 Da LogP 12.06 TPSA 134.4	2 viol.	✓ Clean	`CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN)OC…`
8Q1	5XTH	B9EE38	540.7 Da LogP 3.29 TPSA 162.3	1 viol.	✓ Clean	`CCCCCCCCCCCC(=O)SCCNC(=O)CCNC(=O)[C@@H](C(C)(C)…`
970	6ZKL	O78753	394.4 Da LogP 3.70 TPSA 63.2	✓ Ro5	✓ Clean	`CC(=C)[C@H]1Cc2c(ccc3c2O[C@@H]4COc5cc(c(cc5[C@@…`
AYA	6ZKL	O78753	131.1 Da LogP -0.40 TPSA 66.4	✓ Ro5	✓ Clean	`C[C@@H](C(=O)O)NC(=O)C`
BCR	6L7O	Q8DJ02	536.9 Da LogP 12.61 TPSA 0.0	2 viol.	✓ Clean	`CC1=C(C(CCC1)(C)C)\C=C\C(=C\C=C\C(=C\C=C\C=C(/C…`
CDL	6G2J	P03899	1464.1 Da LogP 23.31 TPSA 242.6	3 viol.	✓ Clean	`CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)([O-])OCC(…`
DCQ	6ZKA	O78753	322.4 Da LogP 4.49 TPSA 52.6	✓ Ro5	Alert	`CCCCCCCCCCC1=C(C(=O)C(=C(C1=O)OC)OC)C`
DGD	6KHI	Q8DJ02	949.3 Da LogP 7.61 TPSA 231.1	4 viol.	✓ Clean	`CCCCCCCCCCCCCCCCCC(=O)OC[C@H](CO[C@H]1[C@@H]([C…`
EHZ	6G2J	P03899	584.7 Da LogP 3.04 TPSA 182.5	2 viol.	✓ Clean	`CCCCCCCCCCC[C@@H](CC(=O)SCCNC(=O)CCNC(=O)[C@@H]…`
FES	6G2J	P03899	175.8 Da LogP 1.29 TPSA 0.0	✓ Ro5	✓ Clean	`S1[Fe]S[Fe]1`
FME	6ZKL	O78753	177.2 Da LogP -0.06 TPSA 66.4	✓ Ro5	✓ Clean	`CSCC[C@@H](C(=O)O)NC=O`
LHG	6KHI	Q8DJ02	723.0 Da LogP 9.89 TPSA 148.8	2 viol.	✓ Clean	`CCCCCCCCCCCCCCCC(=O)OC[C@H](CO[P@@](=O)(O)OC[C@…`
LMG	6KHI	Q8DJ02	787.2 Da LogP 9.78 TPSA 152.0	2 viol.	✓ Clean	`CCCCCCCCCCCCCCCCCC(=O)OC[C@H](CO[C@H]1[C@@H]([C…`
MYR	6ZKB	O78753	228.4 Da LogP 4.77 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCC(=O)O`
PC1	6G2J	P03899	790.2 Da LogP 12.17 TPSA 111.2	2 viol.	✓ Clean	`CCCCCCCCCCCCCCCCCC(=O)OC[C@H](CO[P@@](=O)([O-])…`
PEE	5XTC	P03897	744.0 Da LogP 11.61 TPSA 134.4	2 viol.	✓ Clean	`CCCCCCCC/C=C\CCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN…`
PGT	6TJV	Q8DJ02	751.0 Da LogP 10.67 TPSA 148.8	2 viol.	✓ Clean	`CCCCCCCCCCCCCCCCCC(=O)O[C@@H](COC(=O)CCCCCCCCCC…`
PL9	6KHJ	Q8DJ02	749.2 Da LogP 16.57 TPSA 34.1	2 viol.	Alert	`CC1=C(C(=O)C(=CC1=O)CC=C(C)CCC=C(C)CCC=C(C)CCC=…`
PLX	5XTC	P03897	767.1 Da LogP 11.61 TPSA 114.7	2 viol.	✓ Clean	`CCCCCCCCCCCCCCCCC[C@@H](O)O[C@H](CO[C@@H](CCCCC…`
PNS	5LNK	O78753	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`
PQN	6L7P	Q8DJ02	450.7 Da LogP 9.16 TPSA 34.1	1 viol.	Alert	`CC1=C(C(=O)c2ccccc2C1=O)C\C=C(/C)\CCC[C@H](C)CC…`
SQD	6KHI	Q8DJ02	795.1 Da LogP 8.12 TPSA 186.1	3 viol.	✓ Clean	`CCCCCCCCCCCCCCCC(=O)OC[C@H](COC1[C@@H]([C@H]([C…`
ZMP	5LNK	O78753	568.7 Da LogP 4.07 TPSA 162.3	1 viol.	✓ Clean	`CCCCCCCCCCCCCC(=O)SCCNC(=O)CCNC(=O)[C@H](C(C)(C…`

Experimental bioactivity from ChEMBL measured directly on this protein. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

No ChEMBL bioactivity data found for this exact protein.

Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).

No ChEMBL hits found through similar proteins.

Proposed virtual-screening candidates from ZINC. Score = Tanimoto similarity to a known binder (0–1; higher = more similar).

Ligand	Tanimoto	MW · LogP · TPSA	Lipinski	PAINS	SMILES
ZINC13522091	1.000	394.4 Da LogP 3.70 TPSA 63.2	✓ Ro5	✓ Clean	`C=C(C)[C@@H]1Cc2c(ccc3c2O[C@@H]2COc4cc(OC)c(OC)…`
ZINC1529498	1.000	200.3 Da LogP 3.99 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCCCCCC(=O)O`
ZINC1530417	1.000	228.4 Da LogP 4.77 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCC(=O)O`
ZINC1530836	1.000	394.4 Da LogP 3.70 TPSA 63.2	✓ Ro5	✓ Clean	`C=C(C)[C@@H]1Cc2c(ccc3c2O[C@H]2COc4cc(OC)c(OC)c…`
ZINC1628119	1.000	214.3 Da LogP 4.38 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCCCCCCC(=O)O`
ZINC2548962	1.000	394.4 Da LogP 3.70 TPSA 63.2	✓ Ro5	✓ Clean	`C=C(C)[C@@H]1Cc2c(ccc3c2O[C@H]2COc4cc(OC)c(OC)c…`
ZINC2575028	1.000	322.4 Da LogP 4.49 TPSA 52.6	✓ Ro5	Alert	`CCCCCCCCCCC1=C(C)C(=O)C(OC)=C(OC)C1=O`
ZINC3860715	1.000	394.4 Da LogP 3.70 TPSA 63.2	✓ Ro5	✓ Clean	`C=C(C)[C@H]1Cc2c(ccc3c2O[C@@H]2COc4cc(OC)c(OC)c…`
ZINC3874884	1.000	394.4 Da LogP 3.70 TPSA 63.2	✓ Ro5	✓ Clean	`C=C(C)[C@@H]1Cc2c(ccc3c2O[C@@H]2COc4cc(OC)c(OC)…`
ZINC3874885	1.000	394.4 Da LogP 3.70 TPSA 63.2	✓ Ro5	✓ Clean	`C=C(C)[C@H]1Cc2c(ccc3c2O[C@H]2COc4cc(OC)c(OC)cc…`
ZINC8660420	1.000	394.4 Da LogP 3.70 TPSA 63.2	✓ Ro5	✓ Clean	`C=C(C)[C@H]1Cc2c(ccc3c2O[C@@H]2COc4cc(OC)c(OC)c…`
ZINC102190506	0.872	467.5 Da LogP 4.25 TPSA 134.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)OC[C@H](CO[P@@](=O)(O)OCCN)OC(=O)CC…`
ZINC102190512	0.872	467.5 Da LogP 4.25 TPSA 134.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)OC[C@@H](CO[P@@](=O)(O)OCCN)OC(=O)C…`
ZINC226792912	0.860	396.4 Da LogP 2.72 TPSA 80.3	✓ Ro5	✓ Clean	`COc1cc2c(cc1OC)[C@@H]1C(=O)c3ccc4c(c3O[C@@H]1CO…`
ZINC226792928	0.860	396.4 Da LogP 2.72 TPSA 80.3	✓ Ro5	✓ Clean	`COc1cc2c(cc1OC)[C@@H]1C(=O)c3ccc4c(c3O[C@H]1CO2…`
ZINC230121190	0.860	396.4 Da LogP 2.72 TPSA 80.3	✓ Ro5	✓ Clean	`COc1cc2c(cc1OC)[C@@H]1C(=O)c3ccc4c(c3O[C@@H]1CO…`
ZINC230121201	0.860	396.4 Da LogP 2.72 TPSA 80.3	✓ Ro5	✓ Clean	`COc1cc2c(cc1OC)[C@@H]1C(=O)c3ccc4c(c3O[C@H]1CO2…`
ZINC27416437	0.851	411.4 Da LogP 2.69 TPSA 134.4	✓ Ro5	✓ Clean	`CCCCCC(=O)OC[C@H](CO[P@](=O)(O)OCCN)OC(=O)CCCCC`
ZINC33902364	0.851	411.4 Da LogP 2.69 TPSA 134.4	✓ Ro5	✓ Clean	`CCCCCC(=O)OC[C@@H](CO[P@@](=O)(O)OCCN)OC(=O)CCC…`
ZINC138457918	0.850	228.3 Da LogP 3.56 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)CCCCC(=O)O`
ZINC138458029	0.850	228.3 Da LogP 3.56 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCCC(=O)O`
ZINC144395054	0.850	242.4 Da LogP 3.95 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCC(=O)CCCCCCCC(=O)O`
ZINC14619628	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCC(=O)CCCCCCCCCC(=O)O`
ZINC196749828	0.850	214.3 Da LogP 3.17 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCC(=O)O`
ZINC2113934076	0.850	256.4 Da LogP 4.34 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCCCCC(=O)O`
ZINC2113934082	0.850	256.4 Da LogP 4.34 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)CCCCCCC(=O)O`
ZINC2113934083	0.850	256.4 Da LogP 4.34 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCCC(=O)CCCCC(=O)O`
ZINC2243670	0.850	228.3 Da LogP 3.56 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCC(=O)CCCCCCC(=O)O`
ZINC2569203	0.850	214.3 Da LogP 3.17 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCC(=O)CCCCCC(=O)O`
ZINC4798470	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCCCCCC(=O)O`
ZINC5973005	0.850	242.4 Da LogP 3.95 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCCCC(=O)O`
ZINC71418182	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCCCC(=O)CCCCC(=O)O`
ZINC79244776	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)CCCCCCCC(=O)O`
ZINC86037082	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCCC(=O)CCCCCC(=O)O`
ZINC86037089	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCC(=O)CCCCCCC(=O)O`
ZINC86039283	0.850	242.4 Da LogP 3.95 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCC(=O)CCCCC(=O)O`
ZINC13813085	0.820	410.4 Da LogP 2.68 TPSA 83.5	✓ Ro5	✓ Clean	`C=C(CO)[C@@H]1Cc2c(ccc3c2O[C@H]2COc4cc(OC)c(OC)…`
ZINC13813088	0.820	410.4 Da LogP 2.68 TPSA 83.5	✓ Ro5	✓ Clean	`C=C(CO)[C@@H]1Cc2c(ccc3c2O[C@@H]2COc4cc(OC)c(OC…`
ZINC2115043	0.820	410.4 Da LogP 2.68 TPSA 83.5	✓ Ro5	✓ Clean	`C=C(CO)[C@@H]1Cc2c(ccc3c2O[C@@H]2COc4cc(OC)c(OC…`
ZINC36387001	0.820	410.4 Da LogP 2.68 TPSA 83.5	✓ Ro5	✓ Clean	`C=C(CO)[C@@H]1Cc2c(ccc3c2O[C@H]2COc4cc(OC)c(OC)…`
ZINC3947515	0.820	410.4 Da LogP 2.68 TPSA 83.5	✓ Ro5	✓ Clean	`C=C(CO)[C@H]1Cc2c(ccc3c2O[C@@H]2COc4cc(OC)c(OC)…`
ZINC2242696	0.810	273.3 Da LogP -1.39 TPSA 124.6	✓ Ro5	✓ Clean	`CC(=O)N[C@@H](C)C(=O)N[C@@H](C)C(=O)N[C@@H](C)C…`
ZINC2566274	0.810	344.4 Da LogP -1.89 TPSA 153.7	✓ Ro5	✓ Clean	`CC(=O)N[C@@H](C)C(=O)N[C@@H](C)C(=O)N[C@@H](C)C…`
ZINC2572098	0.810	202.2 Da LogP -0.90 TPSA 95.5	✓ Ro5	✓ Clean	`CC(=O)N[C@@H](C)C(=O)N[C@@H](C)C(=O)O`
ZINC3160730	0.810	214.3 Da LogP 3.17 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)CCCC(=O)O`
ZINC4582907	0.810	200.3 Da LogP 2.78 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCC(=O)O`
ZINC4727003	0.810	312.4 Da LogP 4.69 TPSA 71.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCC(=O)CCCCCCCC(=O)O`
ZINC5706638	0.810	344.4 Da LogP -1.89 TPSA 153.7	✓ Ro5	✓ Clean	`CC(=O)N[C@H](C)C(=O)N[C@@H](C)C(=O)N[C@@H](C)C(…`
ZINC5706640	0.810	344.4 Da LogP -1.89 TPSA 153.7	✓ Ro5	✓ Clean	`CC(=O)N[C@H](C)C(=O)N[C@H](C)C(=O)N[C@@H](C)C(=…`
ZINC86037074	0.810	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCC(=O)CCCC(=O)O`

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.