Ligand profile

VAK

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

Bound to: VK055_0339 — 3-(3-hydroxy-phenyl)propionate/3-hydroxycinnamic acid hydroxylase

Via homolog PDB 3ihg UniProt Q54530 Formula C₂₂H₂₀O₈
Mol. weight 412.39 Da
Permeability Check
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
VAK
PDB
3ihg
UniProt (similar protein)
Q54530
Target protein
VK055_0339

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 412.39 Da
LogP (Crippen) 1.71
H-bond donors 4
H-bond acceptors 8
TPSA 141.36 Ų
Rotatable bonds 2
Aromatic rings 2 / 4
Heavy atoms 30
Fraction sp³ C 0.32
Formula C₂₂H₂₀O₈

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 141.4
  • −1 ≤ LogP ≤ 5 1.71
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 412.4
  • LogP ≤ 5 1.71
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 8
Veber's rules Fail
  • Rotatable bonds ≤ 10 2
  • TPSA ≤ 140 Ų 141.4
PAINS Alert

Matches PAINS filter: quinone_A(370). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CC[C@]1(C[C@@H](c2c(cc3c(c2O)C(=O)c4c(cccc4O)C3=O)[C@H]1C(=O)OC)O)O
InChI 
InChI=1S/C22H20O8/c1-3-22(29)8-13(24)15-10(17(22)21(28)30-2)7-11-16(20(15)27)19(26)14-9(18(11)25)5-4-6-12(14)23/h4-7,13,17,23-24,27,29H,3,8H2,1-2H3/t13-,17-,22+/m0/s1
InChIKey 
RACGRCLGVYXIAO-YOKWENHESA-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
PF01494

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_0339.

PDB 4

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

Ligand PDB entry

ZINC 22

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

Compound Similarity (Tanimoto)