Ligand profile

CHEMBL3736321

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_00051 — DNA gyrase subunit B

Via homolog UniProt P0A0K8 Formula C₂₁H₂₀BrN₇O₃
pchembl 8.10 ~7.9 nM
Mol. weight 498.34 Da
Permeability Check
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL3736321
UniProt (similar protein)
P0A0K8
pchembl
8.100 (~7.9 nM)
Target protein
KP13_00051

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 498.34 Da
LogP (Crippen) 2.54
H-bond donors 3
H-bond acceptors 8
TPSA 126.96 Ų
Rotatable bonds 6
Aromatic rings 4 / 4
Heavy atoms 32
Fraction sp³ C 0.19
Formula C₂₁H₂₀BrN₇O₃

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 127.0
  • −1 ≤ LogP ≤ 5 2.54
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 498.3
  • LogP ≤ 5 2.54
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 8
Veber's rules Pass
  • Rotatable bonds ≤ 10 6
  • TPSA ≤ 140 Ų 127.0
PAINS Alert

Matches PAINS filter: dyes5A(27). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CCNC(=O)Nc1cn(-c2ncc(Br)cn2)c2cc(-c3ccn(CCO)c(=O)c3)cnc12
InChI 
InChI=1S/C21H20BrN7O3/c1-2-23-21(32)27-16-12-29(20-25-10-15(22)11-26-20)17-7-14(9-24-19(16)17)13-3-4-28(5-6-30)18(31)8-13/h3-4,7-12,30H,2,5-6H2,1H3,(H2,23,27,32)
InChIKey 
HMINUNKKLNSQRF-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
Curation
pdb_similarity_tanimoto
Binding sites
PF02518

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_00051.

PDB 88

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)