Ligand profile

33C

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

Bound to: VK055_3566 — ankyrin repeat family protein

Via homolog PDB 4tkf UniProt Q9H2K2 Formula C₂₅H₂₁N₃O₃
Mol. weight 411.46 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
33C
PDB
4tkf
UniProt (similar protein)
Q9H2K2
Target protein
VK055_3566

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 411.46 Da
LogP (Crippen) 4.02
H-bond donors 1
H-bond acceptors 4
TPSA 79.37 Ų
Rotatable bonds 3
Aromatic rings 3 / 6
Heavy atoms 31
Fraction sp³ C 0.28
Formula C₂₅H₂₁N₃O₃

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 79.4
  • −1 ≤ LogP ≤ 5 4.02
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 411.5
  • LogP ≤ 5 4.02
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 79.4
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1cc2cccnc2c(c1)NC(=O)c3ccc(cc3)N4C(=O)[C@@H]5[C@@H]6CC[C@@H](C6)[C@@H]5C4=O
InChI 
InChI=1S/C25H21N3O3/c29-23(27-19-5-1-3-14-4-2-12-26-22(14)19)15-8-10-18(11-9-15)28-24(30)20-16-6-7-17(13-16)21(20)25(28)31/h1-5,8-12,16-17,20-21H,6-7,13H2,(H,27,29)/t16-,17+,20-,21+
InChIKey 
LFGACFGWTJMDPZ-ALFLXDJESA-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
PF00644

External resources

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

Other ligands for this protein

Quick navigation to other ligands bound to VK055_3566.

PDB 124

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

Ligand PDB entry

ChEMBL 100

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)