Ligand profile

K81

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

Bound to: P10721

Via homolog PDB 6n0p UniProt P15056 Formula C₂₅H₂₅F₃N₄O₄
Mol. weight 502.49 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
K81
PDB
6n0p
UniProt (similar protein)
P15056
Target protein
P10721

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 502.49 Da
LogP (Crippen) 3.93
H-bond donors 2
H-bond acceptors 7
TPSA 96.81 Ų
Rotatable bonds 7
Aromatic rings 3 / 4
Heavy atoms 36
Fraction sp³ C 0.32
Formula C₂₅H₂₅F₃N₄O₄

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 96.8
  • −1 ≤ LogP ≤ 5 3.93
Lipinski's Rule of Five Pass 1 violation
  • MW ≤ 500 Da 502.5
  • LogP ≤ 5 3.93
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 7
Veber's rules Pass
  • Rotatable bonds ≤ 10 7
  • TPSA ≤ 140 Ų 96.8
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Cc1ccc(cc1c2cc(nc(c2)OCCO)N3CCOCC3)NC(=O)c4ccnc(c4)C(F)(F)F
InChI 
InChI=1S/C25H25F3N4O4/c1-16-2-3-19(30-24(34)17-4-5-29-21(12-17)25(26,27)28)15-20(16)18-13-22(32-6-9-35-10-7-32)31-23(14-18)36-11-8-33/h2-5,12-15,33H,6-11H2,1H3,(H,30,34)
InChIKey 
UEPXBTCUIIGYCY-UHFFFAOYSA-N

Provenance

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

Method
LigQ domain
Source
PDB
Binding sites
PF07714

External resources

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

Other ligands for this protein

Quick navigation to other ligands bound to P10721.

PDB 232

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)