Protein profile

PA3877

nitrite extrusion protein 1

Genome: NC_002516.2

Gene: narK1 PA3877 Structure source: AlphaFold UniProt G3XD60 UniProt O54041

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Amino acids 431

Annotations 6

Features 51

PDB binders 3

Druggability 0.854

Overview

Basic information about this protein and its source genome.

Accession: PA3877
Assembly: Pseudomonas aeruginosa PAO1, complete genome
Gene: narK1 PA3877
Status: annotated
Amino acids: 431
Structure source: AlphaFold

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:0015112 Enables the transfer of nitrate ions (NO3-) from one side of a membrane to the other. GO:0042128 The nitrogen metabolic process that encompasses the uptake of nitrate from the environment and reduction to ammonia, and results in the incorporation of nitrogen derived from nitrate into cellular substances. GO:0015706 The directed movement of nitrate into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. GO:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other. GO:0022857 Enables the transfer of a substance, usually a specific substance or a group of related substances, from one side of a membrane to the other.

Target profile

Computed evidence for target prioritization.

Human off-target: No hit
Gut microbiome off-target: hit
Essential (DEG): N
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 0.854

Structure –

Pocket –

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

6 GO

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:0015112 Enables the transfer of nitrate ions (NO3-) from one side of a membrane to the other.
GO:0042128 The nitrogen metabolic process that encompasses the uptake of nitrate from the environment and reduction to ammonia, and results in the incorporation of nitrogen derived from nitrate into cellular substances.
GO:0015706 The directed movement of nitrate into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
GO:0055085 The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other.
GO:0022857 Enables the transfer of a substance, usually a specific substance or a group of related substances, from one side of a membrane to the other.

Sequence Features

Domain/signature hits from InterPro and related databases.

51 records

Show feature table

Start	End	DB	Term	Name
279	297	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
76	98	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
12	404	CDD	cd17341	MFS_NRT2_like
12	404	InterPro	IPR044772	Nitrate transporter
313	335	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
163	182	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
378	382	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
47	69	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
403	431	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
93	97	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
137	159	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
336	354	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
98	122	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
8	410	ProSiteProfiles	PS50850	Major facilitator superfamily (MFS) profile.
8	410	InterPro	IPR020846	Major facilitator superfamily domain
185	213	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
298	316	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
383	402	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
250	272	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
103	125	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
66	71	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
355	377	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
3	401	PANTHER	PTHR23515	HIGH-AFFINITY NITRATE TRANSPORTER 2.3
3	401	InterPro	IPR044772	Nitrate transporter
236	246	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
217	235	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
162	166	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
214	235	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
12	34	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
317	335	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
12	34	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
381	403	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
196	417	Gene3D	G3DSA:1.20.1250.20	MFS general substrate transporter like domains
196	417	InterPro	IPR036259	MFS transporter superfamily
279	298	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
72	92	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
247	267	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
134	161	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
35	45	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
1	11	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
46	65	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
268	278	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
355	377	TMHMM	TMhelix	Region of a membrane-bound protein predicted to be embedded in the membrane.
167	184	Phobius	TRANSMEMBRANE	Region of a membrane-bound protein predicted to be embedded in the membrane.
123	133	Phobius	CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
5	412	SUPERFAMILY	SSF103473	MFS general substrate transporter
5	412	InterPro	IPR036259	MFS transporter superfamily
17	368	Pfam	PF07690	Major Facilitator Superfamily
17	368	InterPro	IPR011701	Major facilitator superfamily
3	188	Gene3D	G3DSA:1.20.1250.20	MFS general substrate transporter like domains
3	188	InterPro	IPR036259	MFS transporter superfamily

3D Structure

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

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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 PA3877	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
1				0.854
4				0.415

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.

53 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
J0M	6E9O	J7QAK3	196.2 Da LogP -3.49 TPSA 138.5	1 viol.	✓ Clean	`C([C@H]([C@@H]([C@@H]([C@H](C(=O)O)O)O)O)O)O`
OLA	4U4T	P10903	282.5 Da LogP 6.11 TPSA 37.3	1 viol.	✓ Clean	`CCCCCCCC\C=C/CCCCCCCC(=O)O`
OLC	4U4T	P10903	356.5 Da LogP 4.92 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](CO)O`

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
ZINC1501016272	1.000	328.5 Da LogP 4.14 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCC/C=C\CCCCCCC(=O)OC[C@H](O)CO`
ZINC1501016273	1.000	328.5 Da LogP 4.14 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCC/C=C\CCCCCCC(=O)OC[C@@H](O)CO`
ZINC1501016315	1.000	314.5 Da LogP 3.75 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCC/C=C\CCCCCCC(=O)OC[C@@H](O)CO`
ZINC1501016316	1.000	314.5 Da LogP 3.75 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCC/C=C\CCCCCCC(=O)OC[C@H](O)CO`
ZINC2038077522	1.000	356.5 Da LogP 4.92 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCCC=CCCCCCCCC(=O)OC[C@@H](O)CO`
ZINC2038077523	1.000	356.5 Da LogP 4.92 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCCC=CCCCCCCCC(=O)OC[C@H](O)CO`
ZINC221534416	1.000	328.5 Da LogP 4.14 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCC/C=C\CCCCCC(=O)OC[C@@H](O)CO`
ZINC32840893	1.000	328.5 Da LogP 4.14 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCC/C=C\CCCCCCCC(=O)OC[C@@H](O)CO`
ZINC32840894	1.000	328.5 Da LogP 4.14 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCC/C=C/CCCCCCCC(=O)OC[C@@H](O)CO`
ZINC32840895	1.000	328.5 Da LogP 4.14 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCC/C=C\CCCCCCCC(=O)OC[C@H](O)CO`
ZINC32840896	1.000	328.5 Da LogP 4.14 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCC/C=C/CCCCCCCC(=O)OC[C@H](O)CO`
ZINC32840901	1.000	356.5 Da LogP 4.92 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCC/C=C\CCCCCCCC(=O)OC[C@@H](O)CO`
ZINC32840902	1.000	356.5 Da LogP 4.92 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCC/C=C/CCCCCCCC(=O)OC[C@@H](O)CO`
ZINC32840903	1.000	356.5 Da LogP 4.92 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCC/C=C\CCCCCCCC(=O)OC[C@H](O)CO`
ZINC32840904	1.000	356.5 Da LogP 4.92 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCC/C=C/CCCCCCCC(=O)OC[C@H](O)CO`
ZINC64633397	1.000	226.4 Da LogP 4.55 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCC/C=C\CCCCCC(=O)O`
ZINC725433050	1.000	342.5 Da LogP 4.53 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCC/C=C\CCCCCCC(=O)OC[C@@H](O)CO`
ZINC725433052	1.000	342.5 Da LogP 4.53 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCC/C=C\CCCCCCC(=O)OC[C@H](O)CO`
ZINC98208566	1.000	328.5 Da LogP 4.14 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCCCC/C=C\CCCCCC(=O)OC[C@H](O)CO`
ZINC11592819	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@H](O)[C@H](O)[C@H](O)[C@H](O)[C@H](O)CO`
ZINC11592820	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@H](O)[C@H](O)[C@H](O)[C@H](O)[C@@H](O)…`
ZINC11592821	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@H](O)[C@H](O)[C@H](O)[C@@H](O)[C@@H](O…`
ZINC1531006	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H](O…`
ZINC1531007	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H](O)…`
ZINC33991088	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)[C@@H]…`
ZINC34049524	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@@H](O…`
ZINC34370883	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@H](O)[C@@H](O)[C@H](O)[C@@H](O)[C@@H](…`
ZINC4403706	0.950	256.2 Da LogP -4.77 TPSA 178.9	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H…`
ZINC4403707	0.950	256.2 Da LogP -4.77 TPSA 178.9	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H…`
ZINC4403708	0.950	256.2 Da LogP -4.77 TPSA 178.9	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H](O)[C@H]…`
ZINC4403709	0.950	256.2 Da LogP -4.77 TPSA 178.9	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H](O)[C@H]…`
ZINC4521295	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H…`
ZINC4521296	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@@H](O)[C@H]…`
ZINC4521297	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H]…`
ZINC4521298	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@@H](O)[C@@H](O)[C@@H](O)[C@H](O)[C@H](…`
ZINC5830322	0.950	226.2 Da LogP -4.13 TPSA 158.7	1 viol.	✓ Clean	`O=C(O)[C@H](O)[C@H](O)[C@H](O)[C@@H](O)[C@H](O)…`
ZINC32840885	0.943	300.4 Da LogP 3.36 TPSA 66.8	✓ Ro5	✓ Clean	`CCCC/C=C\CCCCCCCC(=O)OC[C@@H](O)CO`
ZINC2053467566	0.919	354.5 Da LogP 4.70 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCC=CCC=CCCCCCCCC(=O)OC[C@@H](O)CO`
ZINC2053467567	0.919	354.5 Da LogP 4.70 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCCC=CCC=CCCCCCCCC(=O)OC[C@H](O)CO`
ZINC29045599	0.919	354.5 Da LogP 4.70 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCC/C=C/C/C=C\CCCCCCCC(=O)OC[C@H](O)CO`
ZINC4557100	0.919	354.5 Da LogP 4.70 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCC/C=C\C/C=C\CCCCCCCC(=O)OC[C@H](O)CO`
ZINC4557101	0.919	354.5 Da LogP 4.70 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCC/C=C\C/C=C\CCCCCCCC(=O)OC[C@@H](O)CO`
ZINC5819989	0.919	354.5 Da LogP 4.70 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCC/C=C/C/C=C/CCCCCCCC(=O)OC[C@H](O)CO`
ZINC5819990	0.919	354.5 Da LogP 4.70 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCC/C=C/C/C=C/CCCCCCCC(=O)OC[C@@H](O)CO`
ZINC85425978	0.919	354.5 Da LogP 4.70 TPSA 66.8	✓ Ro5	✓ Clean	`CCCCC/C=C\C/C=C/CCCCCCCC(=O)OC[C@H](O)CO`
ZINC1531062	0.917	226.4 Da LogP 4.55 TPSA 37.3	✓ Ro5	✓ Clean	`CCCC/C=C/CCCCCCCC(=O)O`
ZINC2504617	0.917	240.4 Da LogP 4.94 TPSA 37.3	✓ Ro5	✓ Clean	`CCCC/C=C/CCCCCCCCC(=O)O`
ZINC32786138	0.917	226.4 Da LogP 4.55 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCC/C=C/CCCC(=O)O`
ZINC4529321	0.917	226.4 Da LogP 4.55 TPSA 37.3	✓ Ro5	✓ Clean	`CCCC/C=C\CCCCCCCC(=O)O`
ZINC5260769	0.917	240.4 Da LogP 4.94 TPSA 37.3	✓ Ro5	✓ Clean	`CCCC/C=C\CCCCCCCCC(=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.