Target Pathogen

Overview

Basic information about this protein and its source genome.

Accession: KP13_04975
Assembly: Klebsiella pneumoniae subsp. pneumoniae Kp13, complete sequence
Gene: paaI AHE44852.1
Status: annotated
Amino acids: 129
Structure source: AlphaFold + ColabFold

GO

GO:0016790 Catalysis of the reaction: RCO-SR' + H2O = RCOOH + HSR'. This reaction is the hydrolysis of a thiolester bond, an ester formed from a carboxylic acid and a thiol (i.e., RCO-SR'), such as that found in acetyl-coenzyme A. GO:0016289 Catalysis of the reaction: an acyl-CoA + H2O = a carboxylate + CoA + H+.

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: 96.06

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 0.509

Structure A0A0H3GMK1

Pocket Pocket 5

P2Rank 0.058

Structure A0A0H3GMK1

Pocket Pocket 1

ColabFold model

FPocket 0.124 · Pocket 5

P2Rank 0.014 · Pocket 1

Core conservation Conserved core gene

Roary core

CoreCruncher core

Gut microbiome 42 / 4744 genomes with a hit

Normalized 0.009

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

2 GO

Gene Ontology (GO)

2

GO:0016790 Catalysis of the reaction: RCO-SR' + H2O = RCOOH + HSR'. This reaction is the hydrolysis of a thiolester bond, an ester formed from a carboxylic acid and a thiol (i.e., RCO-SR'), such as that found in acetyl-coenzyme A.
GO:0016289 Catalysis of the reaction: an acyl-CoA + H2O = a carboxylate + CoA + H+.

Sequence Features

Domain/signature hits from InterPro and related databases.

12 records

Show feature table

Start	End	DB	Term	Name
1	128	FunFam	G3DSA:3.10.129.10:FF:000022	Phenylacetic acid degradation protein
1	127	PANTHER	PTHR42856	ACYL-COENZYME A THIOESTERASE PAAI
10	121	NCBIfam	TIGR02286	hydroxyphenylacetyl-CoA thioesterase PaaI
10	121	InterPro	IPR011973	Phenylacetic acid degradation protein PaaD
1	128	Gene3D	G3DSA:3.10.129.10	Hotdog Thioesterase
11	116	CDD	cd03443	PaaI_thioesterase
38	111	Pfam	PF03061	Thioesterase superfamily
38	111	InterPro	IPR006683	Thioesterase domain
7	119	NCBIfam	TIGR00369	hotdog fold thioesterase
7	119	InterPro	IPR003736	Phenylacetic acid degradation-related domain
3	116	SUPERFAMILY	SSF54637	Thioesterase/thiol ester dehydrase-isomerase
3	116	InterPro	IPR029069	HotDog 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.

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_A0A0H3GMK1	AlphaFold	—	—	full sequence	—	Viewing
ColabFold KP13_04975	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
5				0.509
1				0.05
3				0.011
10				0.0

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	Sticks	Spheres	Surfaces	Score	Probability	Labels	Zoom	Positions
1				2.54	0.058
2				1.18	0.009

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.

5 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
HXC	1WN3	Q5SJP3	865.7 Da LogP 0.25 TPSA 363.6	3 viol.	✓ Clean	`CCCCCC(=O)SCCNC(=O)CCNC(=O)[C@@H](C(C)(C)CO[P@@…`

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
ZINC12501123	0.522	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC4228234	0.522	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@@H](…`
ZINC79671662	0.522	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@H](O…`
ZINC79671663	0.522	427.2 Da LogP -1.75 TPSA 232.6	2 viol.	✓ Clean	`Nc1ncnc2c1ncn2[C@@H]1O[C@H](COP(=O)(O)O)[C@H](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.

KP13_04975