Ligand profile

CHEMBL3679978

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_05261 — Glutaminase

Via homolog UniProt O94925 Formula C₃₁H₄₀N₆O₄S₂
pchembl 8.52 ~3.0 nM
Mol. weight 624.83 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL3679978
UniProt (similar protein)
O94925
pchembl
8.520 (~3.0 nM)
Target protein
KP13_05261

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 624.83 Da
LogP (Crippen) 5.28
H-bond donors 4
H-bond acceptors 9
TPSA 165.82 Ų
Rotatable bonds 18
Aromatic rings 3 / 3
Heavy atoms 43
Fraction sp³ C 0.42
Formula C₃₁H₄₀N₆O₄S₂

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 165.8
  • −1 ≤ LogP ≤ 5 5.28
Lipinski's Rule of Five Fail 2 violations
  • MW ≤ 500 Da 624.8
  • LogP ≤ 5 5.28
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 9
Veber's rules Fail
  • Rotatable bonds ≤ 10 18
  • TPSA ≤ 140 Ų 165.8
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CCCCS(=O)(=O)Cc1cccc(CC(=O)Nc2nnc(CCCCC(=N)CCC(=N)NC(=O)Cc3ccccc3)s2)c1
InChI 
InChI=1S/C31H40N6O4S2/c1-2-3-18-43(40,41)22-25-13-9-12-24(19-25)21-29(39)35-31-37-36-30(42-31)15-8-7-14-26(32)16-17-27(33)34-28(38)20-23-10-5-4-6-11-23/h4-6,9-13,19,32H,2-3,7-8,14-18,20-22H2,1H3,(H2,33,34,38)(H,35,37,39)
InChIKey 
XKFWFCLZWSDSPV-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
ChEMBL
Activity
229038
Curation
pdb_similarity_tanimoto
Binding sites
PF04960

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_05261.

PDB 14

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

Ligand PDB entry

ChEMBL 99

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)