Ligand profile

NEZ

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

Bound to: KP13_02055 — Queuine tRNA-ribosyltransferase

Via homolog PDB 5i03 UniProt P28720 Formula C₁₈H₁₇N₅O
Mol. weight 319.37 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
NEZ
PDB
5i03
UniProt (similar protein)
P28720
Target protein
KP13_02055

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 319.37 Da
LogP (Crippen) 2.48
H-bond donors 3
H-bond acceptors 4
TPSA 100.45 Ų
Rotatable bonds 3
Aromatic rings 4 / 4
Heavy atoms 24
Fraction sp³ C 0.17
Formula C₁₈H₁₇N₅O

Drug-likeness

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

Permeability proxy Check

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

  • TPSA ≤ 90 Ų 100.5
  • −1 ≤ LogP ≤ 5 2.48
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 319.4
  • LogP ≤ 5 2.48
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 100.5
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Cc1ccc(cc1)CCc2c3c(cc4c2N=C(NC4=O)N)[nH]cn3
InChI 
InChI=1S/C18H17N5O/c1-10-2-4-11(5-3-10)6-7-12-15-13(17(24)23-18(19)22-15)8-14-16(12)21-9-20-14/h2-5,8-9H,6-7H2,1H3,(H,20,21)(H3,19,22,23,24)
InChIKey 
SPVJRTJUEVXOMS-UHFFFAOYSA-N

Provenance

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

Method
LigQ nearest_k
Source
PDB
Binding sites
PF01702

External resources

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

Other ligands for this protein

Quick navigation to other ligands bound to KP13_02055.

PDB 60

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

Ligand PDB entry

ChEMBL 5

Compounds with measured inhibitory activity on this target (higher pchembl = more potent).

Compound Potency (pchembl)

ZINC 50

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

Compound Similarity (Tanimoto)