Protein profile

PA0016

potassium transporter inner membrane associated protein

Genome: NC_002516.2

Gene: PA0016 trkA Structure source: AlphaFold UniProt Q9I7B0

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Amino acids 457

Annotations 6

Features 50

PDB binders 1

Druggability 0.558

Overview

Basic information about this protein and its source genome.

Accession: PA0016
Assembly: Pseudomonas aeruginosa PAO1, complete genome
Gene: PA0016 trkA
Status: annotated
Amino acids: 457
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:0005267 Enables the energy-independent facilitated diffusion of a potassium ion through a transmembrane aqueous pore or channel. GO:0071805 A process in which a potassium ion is transported from one side of a membrane to the other. GO:0006813 The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. GO:0008324 Enables the transfer of cation from one side of a membrane to the other. GO:0015079 Enables the transfer of potassium ions (K+) 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): 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 0.558

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:0005267 Enables the energy-independent facilitated diffusion of a potassium ion through a transmembrane aqueous pore or channel.
GO:0071805 A process in which a potassium ion is transported from one side of a membrane to the other.
GO:0006813 The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
GO:0008324 Enables the transfer of cation from one side of a membrane to the other.
GO:0015079 Enables the transfer of potassium ions (K+) from one side of a membrane to the other.

Sequence Features

Domain/signature hits from InterPro and related databases.

50 records

Show feature table

Start	End	DB	Term	Name
232	365	FunFam	G3DSA:3.40.50.720:FF:000042	Trk system potassium transporter TrkA
1	140	Gene3D	G3DSA:3.40.50.720	-
233	353	ProSiteProfiles	PS51201	RCK N-terminal domain profile.
233	353	InterPro	IPR003148	Regulator of K+ conductance, N-terminal
17	457	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
142	226	ProSiteProfiles	PS51202	RCK C-terminal domain profile.
142	226	InterPro	IPR006037	Regulator of K+ conductance, C-terminal
232	365	Gene3D	G3DSA:3.40.50.720	-
231	375	SUPERFAMILY	SSF51735	NAD(P)-binding Rossmann-fold domains
231	375	InterPro	IPR036291	NAD(P)-binding domain superfamily
361	436	SUPERFAMILY	SSF116726	TrkA C-terminal domain-like
361	436	InterPro	IPR036721	Regulator of K+ conductance, C-terminal domain superfamily
1	16	Phobius	SIGNAL_PEPTIDE	Signal peptide region
367	452	ProSiteProfiles	PS51202	RCK C-terminal domain profile.
367	452	InterPro	IPR006037	Regulator of K+ conductance, C-terminal
49	59	PRINTS	PR00335	TrkA potassium uptake protein signature
49	59	InterPro	IPR006036	Potassium uptake protein TrkA
19	33	PRINTS	PR00335	TrkA potassium uptake protein signature
19	33	InterPro	IPR006036	Potassium uptake protein TrkA
73	87	PRINTS	PR00335	TrkA potassium uptake protein signature
73	87	InterPro	IPR006036	Potassium uptake protein TrkA
2	16	PRINTS	PR00335	TrkA potassium uptake protein signature
2	16	InterPro	IPR006036	Potassium uptake protein TrkA
60	70	PRINTS	PR00335	TrkA potassium uptake protein signature
60	70	InterPro	IPR006036	Potassium uptake protein TrkA
1	150	SUPERFAMILY	SSF51735	NAD(P)-binding Rossmann-fold domains
1	150	InterPro	IPR036291	NAD(P)-binding domain superfamily
366	457	FunFam	G3DSA:3.30.70.1450:FF:000002	Trk system potassium transporter TrkA
1	2	Phobius	SIGNAL_PEPTIDE_N_REGION	N-terminal region of a signal peptide.
1	140	FunFam	G3DSA:3.40.50.720:FF:000027	Trk system potassium transporter TrkA
141	231	FunFam	G3DSA:3.30.70.1450:FF:000001	Trk system potassium transporter TrkA
12	16	Phobius	SIGNAL_PEPTIDE_C_REGION	C-terminal region of a signal peptide.
135	221	SUPERFAMILY	SSF116726	TrkA C-terminal domain-like
135	221	InterPro	IPR036721	Regulator of K+ conductance, C-terminal domain superfamily
2	130	ProSiteProfiles	PS51201	RCK N-terminal domain profile.
2	130	InterPro	IPR003148	Regulator of K+ conductance, N-terminal
141	231	Gene3D	G3DSA:3.30.70.1450	-
141	231	InterPro	IPR036721	Regulator of K+ conductance, C-terminal domain superfamily
1	221	PANTHER	PTHR43833	POTASSIUM CHANNEL PROTEIN 2-RELATED-RELATED
234	349	Pfam	PF02254	TrkA-N domain
234	349	InterPro	IPR003148	Regulator of K+ conductance, N-terminal
3	105	Pfam	PF02254	TrkA-N domain
3	105	InterPro	IPR003148	Regulator of K+ conductance, N-terminal
158	221	Pfam	PF02080	TrkA-C domain
158	221	InterPro	IPR006037	Regulator of K+ conductance, C-terminal
388	450	Pfam	PF02080	TrkA-C domain
388	450	InterPro	IPR006037	Regulator of K+ conductance, C-terminal
3	11	Phobius	SIGNAL_PEPTIDE_H_REGION	Hydrophobic region of a signal peptide.
366	457	Gene3D	G3DSA:3.30.70.1450	-
366	457	InterPro	IPR036721	Regulator of K+ conductance, C-terminal domain 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 PA0016	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
8				0.558
3				0.258

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.

51 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
AGS	4J9V	Q87KD2	523.2 Da LogP -1.51 TPSA 262.1	3 viol.	✓ Clean	`c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…`

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
ZINC12360002	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC12360703	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC12503599	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC16546165	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](CO[P@](=O)(O)OP(=O)(…`
ZINC31977053	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)OP(=O)…`
ZINC4806433	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OP(=O…`
ZINC53683898	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC8586019	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)OP(=O)…`
ZINC8586020	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC8586021	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@@](=O)(O)OP(=O…`
ZINC8586022	0.855	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@@](=O)(O)OP(=…`
ZINC13518964	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@H](…`
ZINC1532515	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@H](O…`
ZINC1571045	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@@H]…`
ZINC1842158	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@H](O…`
ZINC2046931	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@H](…`
ZINC2126310	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC3201891	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](COP(=O)(O)O)[C@@H]…`
ZINC3201893	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@@H](…`
ZINC3830180	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](COP(=O)(O)O)[C@@H](…`
ZINC3860156	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC3977897	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](COP(=O)(O)O)[C@@H](O…`
ZINC4806442	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@H](O…`
ZINC8613167	0.782	347.2 Da LogP -1.86 TPSA 186.1	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@H](O…`
ZINC4096224	0.768	346.2 Da LogP -1.90 TPSA 191.9	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](N)(=O)O)[C@@…`
ZINC12503850	0.763	427.3 Da LogP -2.04 TPSA 229.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)OS(=O)…`
ZINC141161066	0.763	427.3 Da LogP -2.04 TPSA 229.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)OS(=O)…`
ZINC141163786	0.763	427.3 Da LogP -2.04 TPSA 229.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)OS(=O)…`
ZINC4228246	0.763	427.3 Da LogP -2.04 TPSA 229.4	1 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)OS(=O…`
ZINC105372833	0.750	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@H](O…`
ZINC105372837	0.750	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@H](O…`
ZINC17107643	0.750	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@@H](…`
ZINC204538551	0.750	345.3 Da LogP -1.93 TPSA 197.6	✓ Ro5	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(N)(N)=O)[C@@H](…`
ZINC31475423	0.738	434.3 Da LogP -2.99 TPSA 238.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@H](CO[P@@](=O)(O)OC(=O)…`
ZINC31516918	0.730	446.4 Da LogP -1.33 TPSA 218.2	1 viol.	✓ Clean	`CC(C)[C@H](N)C(=O)O[P@](=O)(O)OC[C@H]1O[C@@H](n…`
ZINC105469665	0.729	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@@](=O)(O)CP(=O…`
ZINC13527614	0.729	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)CP(=O)…`
ZINC219330894	0.729	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](CO[P@](=O)(O)CP(=O)…`
ZINC3873852	0.729	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)CP(=O)…`
ZINC3873853	0.729	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@](=O)(O)CP(=O…`
ZINC3873854	0.729	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@H]1O[C@@H](CO[P@](=O)(O)CP(=O)…`
ZINC3873855	0.729	425.2 Da LogP -1.64 TPSA 223.4	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@@H](CO[P@](=O)(O)CP(=O…`
ZINC5615251	0.712	375.3 Da LogP -0.55 TPSA 164.1	1 viol.	✓ Clean	`COP(=O)(OC)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc32)[C@…`
ZINC5615253	0.712	375.3 Da LogP -0.55 TPSA 164.1	1 viol.	✓ Clean	`COP(=O)(OC)OC[C@@H]1O[C@@H](n2cnc3c(N)ncnc32)[C…`
ZINC5615258	0.712	375.3 Da LogP -0.55 TPSA 164.1	1 viol.	✓ Clean	`COP(=O)(OC)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc32)[C@…`
ZINC5615263	0.712	375.3 Da LogP -0.55 TPSA 164.1	1 viol.	✓ Clean	`COP(=O)(OC)OC[C@@H]1O[C@@H](n2cnc3c(N)ncnc32)[C…`
ZINC1582675	0.700	403.3 Da LogP 0.23 TPSA 164.1	1 viol.	✓ Clean	`CCOP(=O)(OCC)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc32)[…`
ZINC5486730	0.700	403.3 Da LogP 0.23 TPSA 164.1	1 viol.	✓ Clean	`CCOP(=O)(OCC)OC[C@H]1O[C@@H](n2cnc3c(N)ncnc32)[…`
ZINC5486734	0.700	403.3 Da LogP 0.23 TPSA 164.1	1 viol.	✓ Clean	`CCOP(=O)(OCC)OC[C@@H]1O[C@@H](n2cnc3c(N)ncnc32)…`
ZINC5486740	0.700	403.3 Da LogP 0.23 TPSA 164.1	1 viol.	✓ Clean	`CCOP(=O)(OCC)OC[C@@H]1O[C@@H](n2cnc3c(N)ncnc32)…`

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.