Ligand profile

FLU

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

Bound to: VK055_1726 — excinuclease ABC subunit B

Via homolog PDB 2nmv UniProt P37954 Formula C₂₀H₁₂O₅
Mol. weight 332.31 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
FLU
PDB
2nmv
UniProt (similar protein)
P37954
Target protein
VK055_1726

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 332.31 Da
LogP (Crippen) 3.97
H-bond donors 2
H-bond acceptors 4
TPSA 87.74 Ų
Rotatable bonds 2
Aromatic rings 2 / 4
Heavy atoms 25
Fraction sp³ C 0.00
Formula C₂₀H₁₂O₅

Drug-likeness

Descriptor-based ADME screening flags from SMILES. These are not experimental toxicity results.

Permeability proxy High

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 87.7
  • −1 ≤ LogP ≤ 5 3.97
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 332.3
  • LogP ≤ 5 3.97
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 2
  • TPSA ≤ 140 Ų 87.7
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1ccc(c(c1)C2=C3C=CC(=O)C=C3Oc4c2ccc(c4)O)C(=O)O
InChI 
InChI=1S/C20H12O5/c21-11-5-7-15-17(9-11)25-18-10-12(22)6-8-16(18)19(15)13-3-1-2-4-14(13)20(23)24/h1-10,21H,(H,23,24)
InChIKey 
YKGGGCXBWXHKIZ-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
PDB
Binding sites
PF04851

External resources

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

Other ligands for this protein

Quick navigation to other ligands bound to VK055_1726.

PDB 5

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

Ligand PDB entry

ZINC 50

Virtual screening candidates selected by structural similarity to known actives (Tanimoto ≥ 0.5).

Compound Similarity (Tanimoto)