Protein profile

PA4514

iron transport outer membrane receptor

Genome: NC_002516.2

Gene: piuA PA4514 fiu Structure source: Experimental + AlphaFold UniProt G3XCY8 UniProt O68590

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Amino acids 753

Annotations 9

Features 22

PDB binders 7

Druggability 0.771

Overview

Basic information about this protein and its source genome.

Accession: PA4514
Assembly: Pseudomonas aeruginosa PAO1, complete genome
Gene: piuA PA4514 fiu
Status: annotated
Amino acids: 753
Structure source: Experimental + AlphaFold

GO:0009279 A lipid bilayer that forms the outermost membrane of the cell envelope; enriched in polysaccharide and protein; the outer leaflet of the membrane contains specific lipopolysaccharide structures. GO:0046930 A protein complex providing a discrete opening in a membrane that allows the passage of gases and/or liquids. GO:0015288 Enables the transfer of substances, sized less than 1000 Da, from one side of a membrane to the other. The transmembrane portions of porins consist exclusively of beta-strands which form a beta-barrel. They are found in the outer membranes of Gram-negative bacteria, mitochondria, plastids and possibly acid-fast Gram-positive bacteria. GO:0015344 Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: siderophore-iron(ferrioxamine)(out) + H+(out) = siderophore-iron(ferrioxamine)(in) + H+(in). GO:0038023 Receiving a signal and transmitting it in the cell to initiate a change in cell activity. A signal is a physical entity or change in state that is used to transfer information in order to trigger a response. GO:0006826 The directed movement of iron (Fe) ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

Target profile

Computed evidence for target prioritization.

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

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 0.771

Structure –

Pocket –

Sequence

Primary amino-acid sequence viewer.

MSRQSTDTAVSSQRLLASAIGVAITAIAAPQAAQADEAGQKKTDKDRVLSLDAATIVGEQQDETTYNVDRSASKKYTAPLLDTPKTVTVIPQQVIKDTGALTLADALRTTPGITFGAGEGGNPAGDRPFIRGFNAESDTFLDGMRDVASQTREVFNVEQIEVSKGPGSAYTGAGSTGGSLNLISKTAKQDNFTDAGFTWGSDQTRRTTLDVNRMIGDNAAFRLNLMKHDAHVAGRDEVSVSRWGVAPTVTFGFDTPTRATLSYYHLSTDDMPDYGLPLTNVNRSKANPSKPASVDRDNFYGLKDRDYRKSTTDSGTFRIEHDLNDNLTLSNSTRLVRTTLDYIVSNPDDSRGNVANGYVYRSAKSRNSTSKGWVNQTDLKANFETGFIKHTLVTGLEFSYEDVHNRPYAITSGGGAGNTCNARLLASGDCTSLNRPTPGDNWTGSITDGLAYTDTDTKTSAAYVFDTLKLSEQWELNLGLRYDDFDTKSSGYQTAGRNGPAGYFKRENNSHFWNYQTGLVYKPAPNGSIYLAWSTSSNPTGETGGEGQADISVGNNGLDPERNRNLELGTKWAFFDDALSLNAALFRTDKTNARVASPDVSTLQVLDGEQRVQGVELGFNGKLTEKWKVFGGYTYLDSEIRKSTVKSDEGNKMPQTAQNNFTLWTTYDLLQNFTIGGGTTYVDKQYGNTANSTYIPSYWRYDAMASYKVSKNVDLQLNVQNLTDKRYFDQVYSTHMAHVAPGRTALLGVNFHF

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

9 GO

Gene Ontology (GO)

GO:0009279 A lipid bilayer that forms the outermost membrane of the cell envelope; enriched in polysaccharide and protein; the outer leaflet of the membrane contains specific lipopolysaccharide structures.
GO:0046930 A protein complex providing a discrete opening in a membrane that allows the passage of gases and/or liquids.
GO:0015288 Enables the transfer of substances, sized less than 1000 Da, from one side of a membrane to the other. The transmembrane portions of porins consist exclusively of beta-strands which form a beta-barrel. They are found in the outer membranes of Gram-negative bacteria, mitochondria, plastids and possibly acid-fast Gram-positive bacteria.
GO:0015344 Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: siderophore-iron(ferrioxamine)(out) + H+(out) = siderophore-iron(ferrioxamine)(in) + H+(in).
GO:0038023 Receiving a signal and transmitting it in the cell to initiate a change in cell activity. A signal is a physical entity or change in state that is used to transfer information in order to trigger a response.
GO:0006826 The directed movement of iron (Fe) ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
GO:0015891 The directed movement of siderophores, low molecular weight Fe(III)-chelating substances, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
GO:0033214 A process in which iron (Fe3+) is solubilized by ferric iron-specific chelators, known as siderophores is imported into the cell by transmembrane transport or endocytosis.
GO:0015343 Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: siderophore-iron(out) + H+(out) = siderophore-iron(in) + H+(in).

Sequence Features

Domain/signature hits from InterPro and related databases.

22 records

Show feature table

Start	End	DB	Term	Name
82	753	NCBIfam	TIGR01783	TonB-dependent siderophore receptor
82	753	InterPro	IPR010105	TonB-dependent siderophore receptor
257	751	Pfam	PF00593	TonB dependent receptor
257	751	InterPro	IPR000531	TonB-dependent receptor-like, beta-barrel
15	27	Phobius	SIGNAL_PEPTIDE_H_REGION	Hydrophobic region of a signal peptide.
86	753	CDD	cd01347	ligand_gated_channel
1	35	SignalP_GRAM_NEGATIVE	SignalP-noTM	SignalP-noTM
62	191	Gene3D	G3DSA:2.170.130.10	-
62	191	InterPro	IPR037066	TonB-dependent receptor, plug domain superfamily
192	753	Gene3D	G3DSA:2.40.170.20	-
192	753	InterPro	IPR036942	TonB-dependent receptor-like, beta-barrel domain superfamily
43	753	PANTHER	PTHR32552	FERRICHROME IRON RECEPTOR-RELATED
43	753	InterPro	IPR039426	TonB-dependent receptor-like
81	178	Pfam	PF07715	TonB-dependent Receptor Plug Domain
81	178	InterPro	IPR012910	TonB-dependent receptor, plug domain
75	753	SUPERFAMILY	SSF56935	Porins
36	753	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
63	189	FunFam	G3DSA:2.170.130.10:FF:000001	Catecholate siderophore TonB-dependent receptor
1	35	Phobius	SIGNAL_PEPTIDE	Signal peptide region
1	14	Phobius	SIGNAL_PEPTIDE_N_REGION	N-terminal region of a signal peptide.
28	35	Phobius	SIGNAL_PEPTIDE_C_REGION	C-terminal region of a signal peptide.
1	35	SignalP_GRAM_POSITIVE	SignalP-TM	SignalP-TM

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

1 + 1

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

Entry	Method	Resolution	Chain	Coverage	Links	Status
PDB 5FOK	X-ray	1.90 Å	A,B	95.2% 37-753	PDBe RCSB PDBj File	Viewing
AlphaFold PA4514	AlphaFold	—	—	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
1				0.771

Pockets (P2RANK)

Showing top-ranked P2Rank candidates by probability. Probability is color-coded per P2Rank calibration: high (≥ 0.5), medium (0.2 – 0.49), low (< 0.2).

P2RANK	Score	Probability
1	29.79	0.933
2	27.91	0.923
3	8.62	0.461
4	4.79	0.212
5	4.63	0.201

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				0.221

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.

57 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.

Ligand	Source crystal	MW · LogP · TPSA	Lipinski	PAINS	SMILES
C8E	5FOK 1.90 Å Open crystal	306.4 Da LogP 2.41 TPSA 57.2	✓ Ro5	✓ Clean	`CCCCCCCCOCCOCCOCCOCCO`

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
6L0	6Z8A	Q9I116	598.7 Da LogP 0.63 TPSA 208.9	2 viol.	✓ Clean	`C1CCNC(=O)CCC(=O)N(CCCCCNC(=O)CCC(=O)N(C/C=C/CC…`
BOG	6BPO	P75780	292.4 Da LogP 0.16 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1)CO)…`
DPO	1QJQ	P06971	173.9 Da LogP -3.34 TPSA 135.6	✓ Ro5	✓ Clean	`[O-]P(=O)([O-])OP(=O)([O-])[O-]`
EFE	3QLB	C5I2D9	378.3 Da LogP 1.23 TPSA 38.5	✓ Ro5	✓ Clean	`C[N@+]12[C@@H]3CS[C@H]1[C@@H]4CSC5=[N+]4[Fe@]2(…`
FTT	1QJQ	P06971	244.4 Da LogP 3.74 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCCC[C@H](CC(=O)O)O`
OES	1BY3	P06971	206.4 Da LogP 2.09 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCC[S@@](=O)CCO`

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
ZINC100014200	1.000	494.7 Da LogP 4.02 TPSA 84.8	✓ Ro5	✓ Clean	`CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC100070166	1.000	290.4 Da LogP 3.17 TPSA 47.9	✓ Ro5	✓ Clean	`CCCCCCCCCCOCCOCCOCCO`
ZINC100305273	1.000	286.5 Da LogP 4.91 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCC[C@H](O)CC(=O)O`
ZINC100305277	1.000	286.5 Da LogP 4.91 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCC[C@@H](O)CC(=O)O`
ZINC100310628	1.000	478.7 Da LogP 4.78 TPSA 75.6	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCCOCCOCCOCCOCCOCCOCCO`
ZINC100365196	1.000	302.5 Da LogP 4.71 TPSA 38.7	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCCOCCOCCO`
ZINC100500540	1.000	230.3 Da LogP 3.35 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCC[C@@H](O)CC(=O)O`
ZINC100500548	1.000	258.4 Da LogP 4.13 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCC[C@H](O)CC(=O)O`
ZINC100500553	1.000	258.4 Da LogP 4.13 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCC[C@@H](O)CC(=O)O`
ZINC101772322	1.000	434.7 Da LogP 4.76 TPSA 66.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCCOCCOCCOCCOCCOCCO`
ZINC103600921	1.000	466.7 Da LogP 3.24 TPSA 84.8	✓ Ro5	✓ Clean	`CCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC14880431	1.000	378.6 Da LogP 3.20 TPSA 66.4	✓ Ro5	✓ Clean	`CCCCCCCCCCOCCOCCOCCOCCOCCO`
ZINC14881140	1.000	306.4 Da LogP 2.41 TPSA 57.2	✓ Ro5	✓ Clean	`CCCCCCCCOCCOCCOCCOCCO`
ZINC16051619	1.000	350.5 Da LogP 2.42 TPSA 66.4	✓ Ro5	✓ Clean	`CCCCCCCCOCCOCCOCCOCCOCCO`
ZINC16051927	1.000	216.3 Da LogP 2.96 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCC[C@@H](O)CC(=O)O`
ZINC2039068	1.000	244.4 Da LogP 3.74 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCCC[C@H](O)CC(=O)O`
ZINC2039069	1.000	244.4 Da LogP 3.74 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCCC[C@@H](O)CC(=O)O`
ZINC2504625	1.000	216.3 Da LogP 2.96 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCC[C@H](O)CC(=O)O`
ZINC2558055	1.000	202.3 Da LogP 2.57 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCC[C@H](O)CC(=O)O`
ZINC2558056	1.000	230.3 Da LogP 3.35 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCC[C@H](O)CC(=O)O`
ZINC2584424	1.000	218.3 Da LogP 2.37 TPSA 38.7	✓ Ro5	✓ Clean	`CCCCCCCCOCCOCCO`
ZINC32838984	1.000	272.4 Da LogP 4.52 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCCC[C@@H](O)CC(=O)O`
ZINC32838986	1.000	272.4 Da LogP 4.52 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCCC[C@H](O)CC(=O)O`
ZINC4521877	1.000	234.3 Da LogP 1.61 TPSA 47.9	✓ Ro5	✓ Clean	`CCCCCCOCCOCCOCCO`
ZINC5273610	1.000	322.4 Da LogP 1.64 TPSA 66.4	✓ Ro5	✓ Clean	`CCCCCCOCCOCCOCCOCCOCCO`
ZINC58538366	1.000	392.6 Da LogP 3.59 TPSA 66.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCOCCOCCOCCOCCOCCO`
ZINC58631420	1.000	422.6 Da LogP 3.22 TPSA 75.6	✓ Ro5	✓ Clean	`CCCCCCCCCCOCCOCCOCCOCCOCCOCCO`
ZINC59441819	1.000	318.5 Da LogP 3.95 TPSA 47.9	✓ Ro5	✓ Clean	`CCCCCCCCCCCCOCCOCCOCCO`
ZINC59622400	1.000	274.4 Da LogP 3.93 TPSA 38.7	✓ Ro5	✓ Clean	`CCCCCCCCCCCCOCCOCCO`
ZINC71788551	1.000	334.5 Da LogP 3.19 TPSA 57.2	✓ Ro5	✓ Clean	`CCCCCCCCCCOCCOCCOCCOCCO`
ZINC71788564	1.000	262.4 Da LogP 2.39 TPSA 47.9	✓ Ro5	✓ Clean	`CCCCCCCCOCCOCCOCCO`
ZINC71788567	1.000	406.6 Da LogP 3.98 TPSA 66.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCOCCOCCOCCOCCOCCO`
ZINC8214594	1.000	362.6 Da LogP 3.97 TPSA 57.2	✓ Ro5	✓ Clean	`CCCCCCCCCCCCOCCOCCOCCOCCO`
ZINC85915165	1.000	202.3 Da LogP 2.57 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCC[C@@H](O)CC(=O)O`
ZINC88260008	1.000	390.6 Da LogP 4.75 TPSA 57.2	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCCOCCOCCOCCOCCO`
ZINC95784968	1.000	450.7 Da LogP 4.00 TPSA 75.6	✓ Ro5	✓ Clean	`CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCO`
ZINC95863931	1.000	464.7 Da LogP 4.39 TPSA 75.6	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCOCCOCCOCCOCCOCCOCCO`
ZINC1849711	0.950	202.3 Da LogP 3.14 TPSA 29.5	✓ Ro5	✓ Clean	`CCCCCCCCCCOCCO`
ZINC1850542	0.950	216.4 Da LogP 3.53 TPSA 29.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCOCCO`
ZINC2555269	0.950	220.3 Da LogP 1.22 TPSA 47.9	✓ Ro5	✓ Clean	`CCCCCOCCOCCOCCO`
ZINC59660505	0.950	244.4 Da LogP 4.31 TPSA 29.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCOCCO`
ZINC8437287	0.950	230.4 Da LogP 3.92 TPSA 29.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCCOCCO`
ZINC85733754	0.950	258.4 Da LogP 4.70 TPSA 29.5	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCCOCCO`
ZINC13515170	0.871	236.3 Da LogP -1.40 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O`
ZINC5821543	0.871	236.3 Da LogP -1.40 TPSA 99.4	✓ Ro5	✓ Clean	`CCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O`
ZINC2039285655	0.811	454.5 Da LogP -2.01 TPSA 178.5	2 viol.	✓ Clean	`CCCCCCCCO[C@H]1O[C@H](CO)[C@H](O[C@@H]2O[C@H](C…`
ZINC2053493147	0.811	482.6 Da LogP -1.23 TPSA 178.5	2 viol.	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@H](CO)[C@H](O[C@@H]2O[C@H]…`
ZINC2053493148	0.811	482.6 Da LogP -1.23 TPSA 178.5	2 viol.	✓ Clean	`CCCCCCCCCCO[C@H]1O[C@H](CO)[C@H](O[C@@H]2O[C@H]…`
ZINC252695225	0.811	482.6 Da LogP -1.23 TPSA 178.5	2 viol.	✓ Clean	`CCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O[C@H]2O[C@H…`
ZINC77311968	0.811	454.5 Da LogP -2.01 TPSA 178.5	2 viol.	✓ Clean	`CCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O[C@@H]2O[C@H]…`

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.