Protein profile

KP13_04444

Para-nitrobenzyl esterase

Genome: KpKP13

Gene: pnbA AHE44317.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GTK4
Amino acids 520
Annotations 2
Features 17
PDB binders 17
Druggability 0.932

Overview

Basic information about this protein and its source genome.

Accession
KP13_04444
Gene
pnbA AHE44317.1
Status
annotated
Amino acids
520
Structure source
AlphaFold + ColabFold

Target profile

Computed evidence for target prioritization.

Human off-target
hit
Human identity (%)
57.971
Human E-value
2.33e-13
Gut microbiome off-target
hit
Essential (DEG)
N
DEG identity (%)
0.0
Localization
Cytoplasmic
ColabFold pLDDT
92.0

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 0.932
Structure A0A0H3GTK4
Pocket Pocket 37
P2Rank 0.926
Structure A0A0H3GTK4
Pocket Pocket 1
ColabFold model
FPocket 0.948 · Pocket 33
P2Rank 0.945 · Pocket 1
Core conservation Accessory gene
Roary accessory
CoreCruncher accessory
Gut microbiome 54 / 4744 genomes with a hit
Normalized 0.011

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 1 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

1
  • GO:0004104 Catalysis of the reaction: an acylcholine + H2O = choline + a carboxylic acid anion.

Sequence Features

Domain/signature hits from InterPro and related databases.

17 records
Show feature table
Start End DB Term Name
25 346 Pfam PF00135 Carboxylesterase family
25 346 InterPro IPR002018 Carboxylesterase, type B
372 494 Pfam PF00135 Carboxylesterase family
372 494 InterPro IPR002018 Carboxylesterase, type B
201 216 ProSitePatterns PS00122 Carboxylesterases type-B serine active site.
201 216 InterPro IPR019826 Carboxylesterase type B, active site
24 479 PANTHER PTHR11559 CARBOXYLESTERASE
3 518 Gene3D G3DSA:3.40.50.1820 alpha/beta hydrolase
3 518 InterPro IPR029058 Alpha/Beta hydrolase fold
419 431 PRINTS PR00878 Cholinesterase signature
419 431 InterPro IPR000997 Cholinesterase
127 156 PRINTS PR00878 Cholinesterase signature
127 156 InterPro IPR000997 Cholinesterase
103 113 ProSitePatterns PS00941 Carboxylesterases type-B signature 2.
103 113 InterPro IPR019819 Carboxylesterase type B, conserved site
25 514 SUPERFAMILY SSF53474 alpha/beta-Hydrolases
25 514 InterPro IPR029058 Alpha/Beta hydrolase fold

3D Structure

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

3D visualization script Full viewer

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_A0A0H3GTK4
AlphaFold full sequence Viewing
ColabFold KP13_04444
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
37 0.932

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 18.3 0.82
2 16.43 0.779
3 7.89 0.419
4 3.32 0.117
5 2.94 0.095

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.

167 records

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.

Show only:
Ligand Source crystal UniProt (homolog) MW · LogP · TPSA Lipinski PAINS SMILES
CFQ P04058 369.2 Da LogP 4.44 TPSA 49.5 ✓ Ro5 ✓ Clean C[As+](C)(C)CCO[C@@H](c1ccccc1[N+](=O)O)C(F)(F)F
CHD P23141 408.6 Da LogP 3.45 TPSA 98.0 ✓ Ro5 ✓ Clean C[C@H](CCC(=O)O)[C@H]1CC[C@@H]2[C@@]1([C@H](C[C…
DME P04058 258.5 Da LogP 3.52 TPSA 0.0 ✓ Ro5 ✓ Clean C[N+](C)(C)CCCCCCCCCC[N+](C)(C)C
EDR P04058 166.2 Da LogP 1.98 TPSA 20.2 ✓ Ro5 ✓ Clean CC[N+](C)(C)c1cccc(c1)O
FJN P04058 673.8 Da LogP 2.80 TPSA 133.9 1 viol. ✓ Clean C[NH+](Cc1ccnc(c1)NC(=O)Nc2cccc3c2[C@@H]4CCCCN4…
G3X P04058 398.5 Da LogP 3.10 TPSA 45.2 ✓ Ro5 ✓ Clean COc1ccc2c3c1O[C@@H]4[C@@]3(CC[N@](C2)CCCN5CCCCC…
HTQ P23141 275.3 Da LogP 1.89 TPSA 49.8 ✓ Ro5 ✓ Clean CN1[C@H]2CC[C@@H]1CC(C2)OC(=O)[C@@H](c3ccccc3)O
MF2 P04058 270.4 Da LogP 2.18 TPSA 41.6 ✓ Ro5 ✓ Clean C[C@@H]1CN(C[C@@H](O1)C)CCCCCCCCNC=O
NAF P04058 250.2 Da LogP 1.58 TPSA 40.5 ✓ Ro5 ✓ Clean C[N+](C)(C)c1cccc(c1)C(C(F)(F)F)(O)O
PE7 P04058 342.5 Da LogP 0.01 TPSA 75.6 ✓ Ro5 ✓ Clean C(COCCOCCOCCOCCOCCOCCS)O
PLM P23141 256.4 Da LogP 5.55 TPSA 37.3 1 viol. ✓ Clean CCCCCCCCCCCCCCCC(=O)O
SIA P23141 309.3 Da LogP -3.87 TPSA 176.8 1 viol. ✓ Clean CC(=O)N[C@@H]1[C@H](C[C@@](O[C@H]1[C@@H]([C@@H]…
TCH P23141 515.7 Da LogP 2.37 TPSA 144.2 1 viol. ✓ Clean C[C@H](CCC(=O)NCCS(=O)(=O)O)[C@H]1CC[C@@H]2[C@@…
TJH P04058 447.9 Da LogP 4.44 TPSA 91.3 ✓ Ro5 Alert c1cc2c(c(c1)O)C(=O)C=C(C2=O)NCCNc3c4ccc(cc4nc5c…
VXA P04058 79.0 Da LogP -0.55 TPSA 40.1 ✓ Ro5 ✓ Clean C[P@H](=O)[O-]
WW2 P23141 180.2 Da LogP 3.13 TPSA 26.3 ✓ Ro5 ✓ Clean C[P@](=O)(OC1CCCCC1)F
XE P04058 131.3 Da LogP 0.00 TPSA 0.0 ✓ Ro5 ✓ Clean [Xe]

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.