Ligand profile

4H6

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

Bound to: KP13_02423 — tRNA (guanine-N(1)-)-methyltransferase

Via homolog PDB 4yqp UniProt P43912 Formula C₁₇H₂₀N₄O₂
Mol. weight 312.37 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
4H6
PDB
4yqp
UniProt (similar protein)
P43912
Target protein
KP13_02423

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 312.37 Da
LogP (Crippen) 1.63
H-bond donors 2
H-bond acceptors 5
TPSA 80.48 Ų
Rotatable bonds 5
Aromatic rings 2 / 3
Heavy atoms 23
Fraction sp³ C 0.29
Formula C₁₇H₂₀N₄O₂

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.

  • TPSA ≤ 90 Ų 80.5
  • −1 ≤ LogP ≤ 5 1.63
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 312.4
  • LogP ≤ 5 1.63
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 5
  • TPSA ≤ 140 Ų 80.5
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1ccc(c(c1)CNc2ccc(cn2)C(=O)N)N3CCOCC3
InChI 
InChI=1S/C17H20N4O2/c18-17(22)14-5-6-16(20-12-14)19-11-13-3-1-2-4-15(13)21-7-9-23-10-8-21/h1-6,12H,7-11H2,(H2,18,22)(H,19,20)
InChIKey 
OCZBFCMTTLGFND-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
PF01746

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_02423.

PDB 88

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

Ligand PDB entry

ChEMBL 38

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)