Ligand profile

CHEMBL31924

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_01960 — Dihydrofolate reductase

Via homolog UniProt P0ABQ4 Formula C₁₇H₂₁BrN₄O₄
pchembl 10.40 ~0.0 nM
Mol. weight 425.28 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL31924
UniProt (similar protein)
P0ABQ4
pchembl
10.400 (~0.0 nM)
Target protein
KP13_01960

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 425.28 Da
LogP (Crippen) 2.64
H-bond donors 3
H-bond acceptors 7
TPSA 133.58 Ų
Rotatable bonds 9
Aromatic rings 2 / 2
Heavy atoms 26
Fraction sp³ C 0.35
Formula C₁₇H₂₁BrN₄O₄

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 133.6
  • −1 ≤ LogP ≤ 5 2.64
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 425.3
  • LogP ≤ 5 2.64
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 7
Veber's rules Pass
  • Rotatable bonds ≤ 10 9
  • TPSA ≤ 140 Ų 133.6
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
COc1cc(Cc2cnc(N)nc2N)cc(OCCCCC(=O)O)c1Br
InChI 
InChI=1S/C17H21BrN4O4/c1-25-12-7-10(6-11-9-21-17(20)22-16(11)19)8-13(15(12)18)26-5-3-2-4-14(23)24/h7-9H,2-6H2,1H3,(H,23,24)(H4,19,20,21,22)
InChIKey 
KRCWWXNWWWXXLR-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)