Protein profile

KP13_00095

putative 2-aminoethylphosphonate-binding periplasmic protein

Genome: KpKP13

Gene: phnS AHE42018.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GV35

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Amino acids 355

Annotations 4

Features 15

PDB binders 4

Druggability 0.374

Overview

Basic information about this protein and its source genome.

Accession: KP13_00095
Assembly: Klebsiella pneumoniae subsp. pneumoniae Kp13, complete sequence
Gene: phnS AHE42018.1
Status: annotated
Amino acids: 355
Structure source: AlphaFold + ColabFold

GO:0030288 The region between the inner (cytoplasmic or plasma) membrane and outer membrane of organisms with two membranes such as Gram negative bacteria. These periplasmic spaces are relatively thick and contain a thin peptidoglycan layer (PGL), also referred to as a thin cell wall. GO:0030975 Binding to thiamine (vitamin B1), a water soluble vitamin present in fresh vegetables and meats, especially liver. GO:0030976 Binding to thiamine pyrophosphate, the diphosphoric ester of thiamine. Acts as a coenzyme of several (de)carboxylases, transketolases, and alpha-oxoacid dehydrogenases. GO:0015888 The directed movement of thiamine into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Thiamine is vitamin B1, a water soluble vitamin present in fresh vegetables and meats, especially liver.

Target profile

Computed evidence for target prioritization.

Human off-target: No hit
Human identity (%): 0.0
Gut microbiome off-target: hit
Essential (DEG): N
DEG identity (%): 0.0
Localization: Unknown
ColabFold pLDDT: 89.83

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 0.374

Structure A0A0H3GV35

Pocket Pocket 3

P2Rank 0.92

Structure A0A0H3GV35

Pocket Pocket 1

ColabFold model

FPocket 0.4 · Pocket 6

P2Rank 0.788 · Pocket 1

Core conservation Accessory gene

Roary core

CoreCruncher accessory

Gut microbiome 22 / 4744 genomes with a hit

Normalized 0.005

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

4 GO

Gene Ontology (GO)

GO:0030288 The region between the inner (cytoplasmic or plasma) membrane and outer membrane of organisms with two membranes such as Gram negative bacteria. These periplasmic spaces are relatively thick and contain a thin peptidoglycan layer (PGL), also referred to as a thin cell wall.
GO:0030975 Binding to thiamine (vitamin B1), a water soluble vitamin present in fresh vegetables and meats, especially liver.
GO:0030976 Binding to thiamine pyrophosphate, the diphosphoric ester of thiamine. Acts as a coenzyme of several (de)carboxylases, transketolases, and alpha-oxoacid dehydrogenases.
GO:0015888 The directed movement of thiamine into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Thiamine is vitamin B1, a water soluble vitamin present in fresh vegetables and meats, especially liver.

Sequence Features

Domain/signature hits from InterPro and related databases.

15 records

Show feature table

Start	End	DB	Term	Name
24	34	Phobius	SIGNAL_PEPTIDE_H_REGION	Hydrophobic region of a signal peptide.
1	39	SignalP_GRAM_NEGATIVE	SignalP-noTM	SignalP-noTM
1	39	SignalP_GRAM_POSITIVE	SignalP-TM	SignalP-TM
43	349	SUPERFAMILY	SSF53850	Periplasmic binding protein-like II
21	351	PANTHER	PTHR30006	THIAMINE-BINDING PERIPLASMIC PROTEIN-RELATED
1	23	Phobius	SIGNAL_PEPTIDE_N_REGION	N-terminal region of a signal peptide.
65	321	Gene3D	G3DSA:3.40.190.10	-
19	353	NCBIfam	TIGR03227	2-aminoethylphosphonate ABC transporter substrate-binding protein
19	353	InterPro	IPR017637	Putative 2-aminoethylphosphonate binding protein, ABC transporter
40	355	Phobius	NON_CYTOPLASMIC_DOMAIN	Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
140	337	Gene3D	G3DSA:3.40.190.10	-
1	39	Phobius	SIGNAL_PEPTIDE	Signal peptide region
56	294	Pfam	PF01547	Bacterial extracellular solute-binding protein
56	294	InterPro	IPR006059	Bacterial extracellular solute-binding protein
35	39	Phobius	SIGNAL_PEPTIDE_C_REGION	C-terminal region of a signal peptide.

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_A0A0H3GV35	AlphaFold	—	—	full sequence	—	Viewing
ColabFold KP13_00095	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
3				0.374

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	18.22	0.818
2	4.39	0.184
3	1.95	0.04
4	0.83	0.003

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				0.4

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	11.71	0.622
2	4.83	0.215
3	1.92	0.039
4	0.93	0.004
5	0.69	0.001

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.

54 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
F6P	4R74	A3N294	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`C([C@@H]1[C@H]([C@@H]([C@](O1)(CO)O)O)O)OP(=O)(…`
G6P	4R73	A3N294	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`C([C@@H]1[C@H]([C@@H]([C@H]([C@H](O1)O)O)O)O)OP…`
S7P	4R75	A3N294	290.2 Da LogP -3.74 TPSA 177.1	1 viol.	✓ Clean	`C([C@H]([C@@H]1[C@H]([C@@H]([C@](O1)(CO)O)O)O)O…`
TPS	2QRY	P31550	345.3 Da LogP 0.72 TPSA 122.4	✓ Ro5	✓ Clean	`Cc1c(sc[n+]1Cc2cnc(nc2N)C)CCOP(=O)(O)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
ZINC100351924	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@](O)(CO)[C@@H](O)[C@H]1O`
ZINC100351935	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O)[C@H](O)[C@H](O)[C@@…`
ZINC12504372	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O`
ZINC138814335	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@](O)(CO)[C@H](O)[C@H]1O`
ZINC1529564	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](O)[C@H](O)[C@H](O)[C@…`
ZINC1532531	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@](O)(CO)[C@H](O)[C@H]1O`
ZINC1532533	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O)[C@@H](O)[C@H](O)[C@…`
ZINC1532839	1.000	345.3 Da LogP 0.72 TPSA 122.4	✓ Ro5	✓ Clean	`Cc1ncc(C[n+]2csc(CCOP(=O)(O)O)c2C)c(N)n1`
ZINC1532847	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@](O)(CO)[C@H](O)[C@@H]1O`
ZINC1532857	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](O)[C@@H](O)[C@H](O)[C…`
ZINC3581460	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](O)[C@@H](O)[C@H](O)[C…`
ZINC38276879	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@@H](O)[C@H](O)[C@…`
ZINC38276880	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@@H](O)[C@H](O)[C@H…`
ZINC3869397	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@@H](O)[C@@H](O)[C…`
ZINC3869919	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@](O)(CO)[C@@H](O)[C@@H]1O`
ZINC3875374	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@…`
ZINC3875375	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@@…`
ZINC4095545	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@…`
ZINC4095546	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@H…`
ZINC4096188	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@@H](O)[C@@H](O)[C@…`
ZINC4096690	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O`
ZINC56874962	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@](O)(CO)[C@H](O)[C@@H]1O`
ZINC8551507	1.000	260.1 Da LogP -3.10 TPSA 156.9	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O)[C@@H](O)[C@H](O)[C@…`
ZINC12504154	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@@H](O)[C@@H]1O`
ZINC1532546	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@H](O)[C@@H](O)[C@H]1O`
ZINC4096190	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@H](O)[C@H](O)[C@@H]1O`
ZINC4228241	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@H](O)[C@@H]1O`
ZINC4521831	0.962	230.1 Da LogP -2.47 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@H](O)[C@@H](O)[C@@H]1O`
ZINC12494841	0.909	290.2 Da LogP -3.74 TPSA 177.1	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@H](O)[…`
ZINC199142139	0.909	290.2 Da LogP -3.74 TPSA 177.1	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@](O)(CO)[C@H](O)[C@@H](O)…`
ZINC257392909	0.909	290.2 Da LogP -3.74 TPSA 177.1	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@](O)(CO)[C@H](O)[C@H](O)[…`
ZINC257392910	0.909	290.2 Da LogP -3.74 TPSA 177.1	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@](O)(CO)[C@H](O)[C@H](O)[…`
ZINC257392911	0.909	290.2 Da LogP -3.74 TPSA 177.1	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@](O)(CO)[C@H](O)[C@@H](O)…`
ZINC8215517	0.868	425.3 Da LogP 0.84 TPSA 169.0	✓ Ro5	✓ Clean	`Cc1ncc(C[n+]2csc(CCO[P@@](=O)(O)OP(=O)(O)O)c2C)…`
ZINC11680412	0.771	340.1 Da LogP -2.99 TPSA 203.4	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@](O)(COP(=O)(O)O)[C@H](O)[…`
ZINC11680415	0.771	340.1 Da LogP -2.99 TPSA 203.4	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@](O)(COP(=O)(O)O)[C@H](O)[…`
ZINC3869914	0.771	340.1 Da LogP -2.99 TPSA 203.4	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@](O)(COP(=O)(O)O)[C@@H](O…`
ZINC3869915	0.771	340.1 Da LogP -2.99 TPSA 203.4	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@](O)(COP(=O)(O)O)[C@@H](…`
ZINC3869916	0.771	340.1 Da LogP -2.99 TPSA 203.4	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@@](O)(COP(=O)(O)O)[C@@H](O…`
ZINC3869917	0.771	340.1 Da LogP -2.99 TPSA 203.4	1 viol.	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@](O)(COP(=O)(O)O)[C@@H](…`
ZINC4096694	0.771	340.1 Da LogP -2.99 TPSA 203.4	1 viol.	✓ Clean	`O=P(O)(O)OC[C@H]1O[C@](O)(COP(=O)(O)O)[C@@H](O)…`
ZINC5159740	0.741	307.4 Da LogP 1.18 TPSA 82.0	✓ Ro5	✓ Clean	`CC(=O)OCCc1sc[n+](Cc2cnc(C)nc2N)c1C`
ZINC13516910	0.733	244.1 Da LogP -2.42 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](CO)[C@@H](O)[C@H]1O`
ZINC2562340	0.733	244.1 Da LogP -2.42 TPSA 136.7	✓ Ro5	✓ Clean	`O=P(O)(O)OC[C@@H]1O[C@@H](CO)[C@H](O)[C@H]1O`
ZINC1569986051	0.722	324.5 Da LogP 1.50 TPSA 88.8	✓ Ro5	✓ Clean	`Cc1ncc(C[n+]2csc(CCOC(=N)S)c2C)c(N)n1`
ZINC4097102	0.719	259.2 Da LogP -3.14 TPSA 162.7	1 viol.	✓ Clean	`N[C@H]1[C@H](O)O[C@H](COP(=O)(O)O)[C@@H](O)[C@@…`
ZINC4097103	0.719	259.2 Da LogP -3.14 TPSA 162.7	1 viol.	✓ Clean	`N[C@H]1[C@@H](O)O[C@H](COP(=O)(O)O)[C@@H](O)[C@…`
ZINC65748831	0.714	345.4 Da LogP 0.43 TPSA 119.3	✓ Ro5	✓ Clean	`Cc1ncc(C[n+]2csc(CCOS(=O)(=O)O)c2C)c(N)n1`
ZINC13520374	0.707	426.3 Da LogP 0.97 TPSA 163.2	✓ Ro5	✓ Clean	`Cc1ncc(C[n+]2csc(CCO[P@@](=O)(O)OP(=O)(O)O)c2C)…`
ZINC49153	0.692	265.4 Da LogP 0.61 TPSA 75.9	✓ Ro5	✓ Clean	`Cc1ncc(C[n+]2csc(CCO)c2C)c(N)n1`

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.