Protein profile

PA1883

NADH-quinone oxidoreductase subunit A

Genome: NC_002516.2

Gene: nuoA1 PA1883 Structure source: AlphaFold UniProt Q9I2L4

Export view

Amino acids 132

Annotations 7

Features 19

PDB binders 20

Druggability 0.937

Overview

Basic information about this protein and its source genome.

Accession: PA1883
Assembly: Pseudomonas aeruginosa PAO1, complete genome
Gene: nuoA1 PA1883
Status: annotated
Amino acids: 132
Structure source: AlphaFold

7.1.1.-

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:0045271 Respiratory chain complex I is an enzyme of the respiratory chain. It consists of several polypeptide chains and is L-shaped, with a horizontal arm lying in the membrane and a vertical arm that projects into the matrix. The electrons of NADH enter the chain at this complex. GO:0050136 Catalysis of the reaction: NADH + H+ + a quinone = NAD+ + a quinol. GO:0008137 Catalysis of the reaction: NADH + ubiquinone + 5 H+(in) = NAD+ + ubiquinol + 4 H+(out). 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: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.

Target profile

Computed evidence for target prioritization.

Human off-target: No hit
Gut microbiome off-target: hit
Essential (DEG): Y
Localization: CytoplasmicMembrane

Selected Druggability evidence

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 0.937

Structure –

Pocket –

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 6 GO

Enzyme Commission (EC)

7.1.1.-

Gene Ontology (GO)

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:0045271 Respiratory chain complex I is an enzyme of the respiratory chain. It consists of several polypeptide chains and is L-shaped, with a horizontal arm lying in the membrane and a vertical arm that projects into the matrix. The electrons of NADH enter the chain at this complex.
GO:0050136 Catalysis of the reaction: NADH + H+ + a quinone = NAD+ + a quinol.
GO:0008137 Catalysis of the reaction: NADH + ubiquinone + 5 H+(in) = NAD+ + ubiquinol + 4 H+(out).
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: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.

Sequence Features

Domain/signature hits from InterPro and related databases.

19 records

Show feature table

Start	End	DB	Term	Name
96	118	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
5	122	Hamap	MF_01394	NAD(P)H-quinone oxidoreductase subunit 3, chloroplastic [ndhC].
5	122	InterPro	IPR023043	NAD(P)H-quinone oxidoreductase subunit 3, bacterial/plastid
64	86	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
114	132	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
10	32	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
24	121	Pfam	PF00507	NADH-ubiquinone/plastoquinone oxidoreductase, chain 3
24	121	InterPro	IPR000440	NADH:ubiquinone/plastoquinone oxidoreductase, chain 3
34	63	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
12	33	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
3	122	Gene3D	G3DSA:1.20.58.1610	NADH:ubiquinone/plastoquinone oxidoreductase, chain 3
3	122	InterPro	IPR038430	NADH:ubiquinone oxidoreductase, subunit 3 superfamily
1	122	FunFam	G3DSA:1.20.58.1610:FF:000003	NADH-quinone oxidoreductase subunit A
92	113	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
87	91	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
11	122	PANTHER	PTHR11058	NADH-UBIQUINONE OXIDOREDUCTASE CHAIN 3
11	122	InterPro	IPR000440	NADH:ubiquinone/plastoquinone oxidoreductase, chain 3
1	11	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
64	86	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...

Legend High Medium Low

Structural evidence

0 + 1

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

Entry	Method	Resolution	Chain	Coverage	Links	Status
AlphaFold PA1883	AlphaFold	—	—	full sequence	—	Viewing

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
6				0.937
1				0.59

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.

70 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	6QC2	O78753	748.1 Da LogP 12.06 TPSA 134.4	2 viol.	✓ Clean	`CCCCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN)OC…`
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	6KHI	Q8DJ02	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-])…`
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=…`
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
ZINC102190506	1.000	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	1.000	467.5 Da LogP 4.25 TPSA 134.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)OC[C@@H](CO[P@@](=O)(O)OCCN)OC(=O)C…`
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…`
ZINC27416437	0.976	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	0.976	411.4 Da LogP 2.69 TPSA 134.4	✓ Ro5	✓ Clean	`CCCCCC(=O)OC[C@@H](CO[P@@](=O)(O)OCCN)OC(=O)CCC…`
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…`
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(…`
ZINC5706639	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(=…`

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.