Binder profile

NH4

Ligand co-crystallized with a similar protein (Protein Data Bank).

Bound to: PA3760 — N-acetyl-D-glucosamine phosphotransferase system transporter

Via homolog PDB 1kbl UniProt P22983 H4N+
Mol. weight 18.04 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
NH4
PDB
1kbl
UniProt (similar protein)
P22983
Target protein
PA3760

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 18.04 Da
LogP (Crippen) 0.38
H-bond donors 1
H-bond acceptors 0
TPSA 36.50 Ų
Rotatable bonds 0
Aromatic rings 0 / 0
Heavy atoms 1
Fraction sp³ C 0.00
Formula H4N+

Drug-likeness

Descriptor-based ADME screening flags from SMILES. These are not experimental toxicity results.

Permeability proxy High

Estimated from TPSA and LogP only: TPSA ≤ 90 Ų and −1 ≤ LogP ≤ 5 are treated as a favorable small-molecule permeability screen.

Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 18.0
  • LogP ≤ 5 0.38
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 0
Veber's rules Pass
  • Rotatable bonds ≤ 10 0
  • TPSA ≤ 140 Ų 36.5
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
[NH4+]
InChI 
InChI=1S/H3N/h1H3/p+1
InChIKey 
QGZKDVFQNNGYKY-UHFFFAOYSA-O

Provenance

Annotation context from LigQ_2, the internal TPW step that collects PDB, ChEMBL, and ZINC ligand evidence.

Method
LigQ nearest_k
Source
PDB
Binding sites
PF02896

External resources

Open this ligand in third-party databases and cheminformatics tools.

Other binders for this protein

Quick navigation to other ligands bound to PA3760.

PDB 5

Ligands co-crystallized with this protein (structural evidence).

Ligand PDB entry

ZINC 50

Virtual screening candidates selected by structural similarity to known actives (Tanimoto ≥ 0.5).

Compound Similarity (Tanimoto)