Ligand profile

CHEMBL33697

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_01960 — Dihydrofolate reductase

Via homolog UniProt P0ABQ4 Formula C₂₁H₂₄Cl₂FN₅O₂S
pchembl 8.99 ~1.0 nM
Mol. weight 500.43 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL33697
UniProt (similar protein)
P0ABQ4
pchembl
8.990 (~1.0 nM)
Target protein
KP13_01960

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 500.43 Da
LogP (Crippen) 4.40
H-bond donors 2
H-bond acceptors 7
TPSA 114.14 Ų
Rotatable bonds 7
Aromatic rings 2 / 3
Heavy atoms 32
Fraction sp³ C 0.33
Formula C₂₁H₂₄Cl₂FN₅O₂S

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 114.1
  • −1 ≤ LogP ≤ 5 4.40
Lipinski's Rule of Five Pass 1 violation
  • MW ≤ 500 Da 500.4
  • LogP ≤ 5 4.40
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 7
Veber's rules Pass
  • Rotatable bonds ≤ 10 7
  • TPSA ≤ 140 Ų 114.1
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CC1(C)N=C(N)N=C(N)N1c1ccc(CCCCc2ccc(S(=O)(=O)F)cc2Cl)c(Cl)c1
InChI 
InChI=1S/C21H24Cl2FN5O2S/c1-21(2)28-19(25)27-20(26)29(21)15-9-7-13(17(22)11-15)5-3-4-6-14-8-10-16(12-18(14)23)32(24,30)31/h7-12H,3-6H2,1-2H3,(H4,25,26,27,28)
InChIKey 
MQTIONOODXSMIB-UHFFFAOYSA-N

Provenance

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

Method
LigQ sequence
Source
ChEMBL
Binding sites
PF00186

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_01960.

PDB 34

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)